FastIron Ethernet Switch Layer 3 Routing Configuration...

Supporting FastIron Software Release 08.0.30mb

CONFIGURATION GUIDE

FastIron Ethernet Switch Layer 3Routing Configuration Guide, 08.0.30mb

Part Number: 53-1003627-10Publication Date: 30 July 2018

Copyright, Trademark and Proprietary RightsInformation© 2018 ARRIS Enterprises LLC. All rights reserved.

No part of this content may be reproduced in any form or by any means or used to make any derivative work (such astranslation, transformation, or adaptation) without written permission from ARRIS International plc and/or its affiliates ("ARRIS").ARRIS reserves the right to revise or change this content from time to time without obligation on the part of ARRIS to providenotification of such revision or change.

Export RestrictionsThese products and associated technical data (in print or electronic form) may be subject to export control laws of the UnitedStates of America. It is your responsibility to determine the applicable regulations and to comply with them. The following noticeis applicable for all products or technology subject to export control:

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by theultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other countryor to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporatedinto other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

DisclaimerTHIS CONTENT AND ASSOCIATED PRODUCTS OR SERVICES ("MATERIALS"), ARE PROVIDED "AS IS" AND WITHOUT WARRANTIES OFANY KIND, WHETHER EXPRESS OR IMPLIED. TO THE FULLEST EXTENT PERMISSIBLE PURSUANT TO APPLICABLE LAW, ARRISDISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OFMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT, FREEDOM FROM COMPUTER VIRUS,AND WARRANTIES ARISING FROM COURSE OF DEALING OR COURSE OF PERFORMANCE. ARRIS does not represent or warrantthat the functions described or contained in the Materials will be uninterrupted or error-free, that defects will be corrected, orare free of viruses or other harmful components. ARRIS does not make any warranties or representations regarding the use ofthe Materials in terms of their completeness, correctness, accuracy, adequacy, usefulness, timeliness, reliability or otherwise. Asa condition of your use of the Materials, you warrant to ARRIS that you will not make use thereof for any purpose that is unlawfulor prohibited by their associated terms of use.

Limitation of LiabilityIN NO EVENT SHALL ARRIS, ARRIS AFFILIATES, OR THEIR OFFICERS, DIRECTORS, EMPLOYEES, AGENTS, SUPPLIERS, LICENSORSAND THIRD PARTY PARTNERS, BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL, EXEMPLARY ORCONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER, EVEN IF ARRIS HAS BEEN PREVIOUSLY ADVISED OF THEPOSSIBILITY OF SUCH DAMAGES, WHETHER IN AN ACTION UNDER CONTRACT, TORT, OR ANY OTHER THEORY ARISING FROMYOUR ACCESS TO, OR USE OF, THE MATERIALS. Because some jurisdictions do not allow limitations on how long an impliedwarranty lasts, or the exclusion or limitation of liability for consequential or incidental damages, some of the above limitationsmay not apply to you.

TrademarksARRIS, the ARRIS logo, Ruckus, Ruckus Wireless, Ruckus Networks, Ruckus logo, the Big Dog design, BeamFlex, ChannelFly,EdgeIron, FastIron, HyperEdge, ICX, IronPoint, OPENG, SmartCell, Unleashed, Xclaim, ZoneFlex are trademarks of ARRISInternational plc and/or its affiliates. Wi-Fi Alliance, Wi-Fi, the Wi-Fi logo, the Wi-Fi CERTIFIED logo, Wi-Fi Protected Access (WPA),the Wi-Fi Protected Setup logo, and WMM are registered trademarks of Wi-Fi Alliance. Wi-Fi Protected Setup™, Wi-Fi Multimedia™,and WPA2™ are trademarks of Wi-Fi Alliance. All other trademarks are the property of their respective owners.

FastIron Ethernet Switch Layer 3 Routing Configuration Guide, 08.0.30mb2 Part Number: 53-1003627-10

ContentsPreface.................................................................................................................................................................................................15

Document Conventions............................................................................................................................................................................ 15Notes, Cautions, and Warnings........................................................................................................................................................ 15

Command Syntax Conventions............................................................................................................................................................... 16Document Feedback................................................................................................................................................................................. 16Ruckus Product Documentation Resources...........................................................................................................................................16Online Training Resources........................................................................................................................................................................17Contacting Ruckus Customer Services and Support.............................................................................................................................17

What Support Do I Need?................................................................................................................................................................. 17Open a Case........................................................................................................................................................................................17Self-Service Resources.......................................................................................................................................................................17

About This Document........................................................................................................................................................................ 19Supported hardware and software......................................................................................................................................................... 19What’s new in this document...................................................................................................................................................................19

IP Configuration..................................................................................................................................................................................21Basic IP configuration............................................................................................................................................................................... 21IP configuration overview......................................................................................................................................................................... 21

Full Layer 3 support........................................................................................................................................................................... 21IP interfaces........................................................................................................................................................................................ 22IP packet flow through a Layer 3 switch..........................................................................................................................................23IP route exchange protocols............................................................................................................................................................. 26IP multicast protocols........................................................................................................................................................................ 27IP interface redundancy protocols...................................................................................................................................................27ACLs and IP access policies...............................................................................................................................................................27

Basic IP parameters and defaults - Layer 3 switches............................................................................................................................28When parameter changes take effect............................................................................................................................................. 28IP global parameters - Layer 3 switches..........................................................................................................................................28IP interface parameters - Layer 3 switches.....................................................................................................................................32

Basic IP parameters and defaults - Layer 2 switches............................................................................................................................33IP global parameters - Layer 2 switches..........................................................................................................................................34Interface IP parameters - Layer 2 switches.....................................................................................................................................35

Configuring IP parameters - Layer 3 switches....................................................................................................................................... 35Configuring IP addresses.................................................................................................................................................................. 35Configuring 31-bit subnet masks on point-to-point networks.....................................................................................................39Configuring DNS resolver..................................................................................................................................................................41Configuring packet parameters....................................................................................................................................................... 43Changing the router ID......................................................................................................................................................................47Specifying a single source interface for specified packet types................................................................................................... 47Configuring delay time for notifying VE down event..................................................................................................................... 50ARP parameter configuration...........................................................................................................................................................51Configuring forwarding parameters................................................................................................................................................57Disabling ICMP messages................................................................................................................................................................. 60Enabling ICMP redirect messages....................................................................................................................................................61Static routes configuration................................................................................................................................................................62Configuring a default network route............................................................................................................................................... 70

FastIron Ethernet Switch Layer 3 Routing Configuration Guide, 08.0.30mbPart Number: 53-1003627-10 3

Configuring IP load sharing.............................................................................................................................................................. 71ECMP load sharing for IPv6...............................................................................................................................................................74ICMP Router Discovery Protocol configuration.............................................................................................................................. 76IRDP parameters................................................................................................................................................................................ 76Reverse Address Resolution Protocol configuration..................................................................................................................... 78Configuring UDP broadcast and IP helper parameters.................................................................................................................79BootP and DHCP relay parameter configuration........................................................................................................................... 82DHCP server........................................................................................................................................................................................84Displaying DHCP server information...............................................................................................................................................94

Configuring IP parameters - Layer 2 switches....................................................................................................................................... 96Configuring the management IP address and specifying the default gateway..........................................................................96Configuring Domain Name System resolver.................................................................................................................................. 97Changing the TTL threshold..............................................................................................................................................................99DHCP Assist configuration.............................................................................................................................................................. 100

IPv4 point-to-point GRE tunnels ........................................................................................................................................................... 104IPv4 GRE tunnel overview............................................................................................................................................................... 104GRE packet structure and header format.....................................................................................................................................105Path MTU Discovery support..........................................................................................................................................................105Configuration considerations for PMTUD support .....................................................................................................................106Tunnel loopback ports for GRE tunnels........................................................................................................................................ 106Support for IPv4 multicast routing over GRE tunnels................................................................................................................. 107GRE support with other features .................................................................................................................................................. 108Configuration considerations for GRE IP tunnels........................................................................................................................ 108Configuration tasks for GRE tunnels............................................................................................................................................. 110Example point-to-point GRE tunnel configuration...................................................................................................................... 117Displaying GRE tunneling information.......................................................................................................................................... 119Clearing GRE statistics.....................................................................................................................................................................123

Bandwidth for IP interfaces................................................................................................................................................................... 123Limitations and pre-requisites....................................................................................................................................................... 124OSPF cost calculation with interface bandwidth..........................................................................................................................124Setting the bandwidth value for an Ethernet interface...............................................................................................................125Setting the bandwidth value for a VE interface............................................................................................................................125Setting the bandwidth value for a tunnel interface.....................................................................................................................126

Displaying IP configuration information and statistics.......................................................................................................................127Changing the network mask display to prefix format.................................................................................................................127Displaying IP information - Layer 3 switches................................................................................................................................127Displaying IP information - Layer 2 switches................................................................................................................................139

Disabling IP checksum check................................................................................................................................................................. 143

Layer 3 Routing Protocols............................................................................................................................................................... 145Adding a static IP route...........................................................................................................................................................................145

Configuring a "null" route............................................................................................................................................................... 146Static route next hop resolution.................................................................................................................................................... 147Static route recursive lookup..........................................................................................................................................................147Static route resolve by default route............................................................................................................................................. 147

Adding a static ARP entry....................................................................................................................................................................... 148Modifying and displaying Layer 3 system parameter limits.............................................................................................................. 148

Layer 3 configuration notes............................................................................................................................................................148FastIron second generation modules............................................................................................................................................149FastIron third generation modules................................................................................................................................................149Displaying Layer 3 system parameter limits................................................................................................................................ 149


Enabling or disabling routing protocols............................................................................................................................................... 150Enabling or disabling Layer 2 switching............................................................................................................................................... 150

Configuration notes and feature limitations for Layer 2 switching........................................................................................... 150Command syntax for Layer 2 switching........................................................................................................................................151

Configuring a Layer 3 Link Aggregration Group (LAG)........................................................................................................................ 151

IPv6 Configuration on FastIron X Series, FCX, and ICX Series Switches.....................................................................................153Full Layer 3 IPv6 feature support.......................................................................................................................................................... 153IPv6 addressing overview....................................................................................................................................................................... 154

IPv6 address types........................................................................................................................................................................... 154IPv6 stateless auto-configuration.................................................................................................................................................. 156

IPv6 CLI command support ...................................................................................................................................................................157IPv6 host address on a Layer 2 switch..................................................................................................................................................159

Configuring a global or site-local IPv6 address with a manually configured interface ID...................................................... 159Configuring a link-local IPv6 address as a system-wide address for a switch..........................................................................159

Configuring the management port for an IPv6 automatic address configuration..........................................................................160Configuring basic IPv6 connectivity on a Layer 3 switch.................................................................................................................... 160

Enabling IPv6 routing...................................................................................................................................................................... 160IPv6 configuration on each router interface.................................................................................................................................161Configuring IPv4 and IPv6 protocol stacks................................................................................................................................... 164

IPv6 management (IPv6 host support)................................................................................................................................................. 164Configuring IPv6 management ACLs............................................................................................................................................. 165Restricting SNMP access to an IPv6 node..................................................................................................................................... 165Specifying an IPv6 SNMP trap receiver..........................................................................................................................................165Configuring SNMP V3 over IPv6..................................................................................................................................................... 165Secure Shell, SCP, and IPv6............................................................................................................................................................. 165IPv6 Telnet.........................................................................................................................................................................................166IPv6 traceroute................................................................................................................................................................................. 166IPv6 Web management using HTTP and HTTPS.......................................................................................................................... 167Restricting Web management access............................................................................................................................................167Restricting Web management access by specifying an IPv6 ACL...............................................................................................167Restricting Web management access to an IPv6 host.................................................................................................................167Configuring name-to-IPv6 address resolution using IPv6 DNS resolver...................................................................................168Defining an IPv6 DNS entry............................................................................................................................................................ 168Pinging an IPv6 address.................................................................................................................................................................. 168Configuring an IPv6 Syslog server................................................................................................................................................. 169Viewing IPv6 SNMP server addresses............................................................................................................................................170Disabling router advertisement and solicitation messages....................................................................................................... 170Disabling IPv6 on a Layer 2 switch.................................................................................................................................................170

IPv6 ICMP feature configuration............................................................................................................................................................171Configuring ICMP rate limiting....................................................................................................................................................... 171Enabling IPv6 ICMP redirect messages......................................................................................................................................... 171

IPv6 neighbor discovery configuration................................................................................................................................................. 172IPv6 neighbor discovery configuration notes...............................................................................................................................173Neighbor solicitation and advertisement messages................................................................................................................... 173Router advertisement and solicitation messages....................................................................................................................... 173Neighbor redirect messages.......................................................................................................................................................... 174Setting neighbor solicitation parameters for duplicate address detection..............................................................................174Setting IPv6 router advertisement parameters........................................................................................................................... 175Prefixes advertised in IPv6 router advertisement messages..................................................................................................... 176Setting flags in IPv6 router advertisement messages................................................................................................................. 177


Enabling and disabling IPv6 router advertisements....................................................................................................................177IPv6 router advertisement preference support........................................................................................................................... 177Configuring reachable time for remote IPv6 nodes.................................................................................................................... 178

IPv6 MTU.................................................................................................................................................................................................. 178Configuration notes and feature limitations for IPv6 MTU.........................................................................................................178Changing the IPv6 MTU...................................................................................................................................................................179

Static neighbor entries configuration................................................................................................................................................... 179Limiting the number of hops an IPv6 packet can traverse................................................................................................................ 180IPv6 source routing security enhancements........................................................................................................................................180TCAM space on FCX device configuration............................................................................................................................................ 180

Allocating TCAM space for IPv4 routing information.................................................................................................................. 181Allocating TCAM space for GRE tunnel information.................................................................................................................... 181

Clearing global IPv6 information........................................................................................................................................................... 181Clearing the IPv6 cache................................................................................................................................................................... 181Clearing IPv6 neighbor information.............................................................................................................................................. 182Clearing IPv6 routes from the IPv6 route table............................................................................................................................182Clearing IPv6 traffic statistics..........................................................................................................................................................183

Displaying global IPv6 information....................................................................................................................................................... 183Displaying IPv6 cache information................................................................................................................................................ 183Displaying IPv6 interface information........................................................................................................................................... 184Displaying IPv6 neighbor information...........................................................................................................................................185Displaying the IPv6 route table ..................................................................................................................................................... 187Displaying local IPv6 routers.......................................................................................................................................................... 188Displaying IPv6 TCP information....................................................................................................................................................189Displaying IPv6 traffic statistics......................................................................................................................................................191

DHCP relay agent for IPv6...................................................................................................................................................................... 194Configuring DHCP for IPv6 relay agent......................................................................................................................................... 195Enabling the interface-ID on the DHCPv6 relay agent messages.............................................................................................. 195Displaying DHCPv6 relay agent information................................................................................................................................ 195Displaying the DHCPv6 Relay configured destinations............................................................................................................... 195Displaying the DHCPv6 Relay information for an interface........................................................................................................196

DHCPv6 Relay Agent Prefix Delegation Notification........................................................................................................................... 196DHCPv6 Relay Agent Prefix Delegation Notification limitations................................................................................................ 197Upgrade and downgrade considerations..................................................................................................................................... 198Configuring DHCPv6 Relay Agent Prefix Delegation Notification.............................................................................................. 198Displaying the DHCPv6 Relay Agent Prefix Delegation Notification information.................................................................... 199

RIP...................................................................................................................................................................................................... 203RIP overview.............................................................................................................................................................................................203RIP parameters and defaults................................................................................................................................................................. 203

RIP global parameters..................................................................................................................................................................... 203RIP interface parameters................................................................................................................................................................ 205

Configuring RIP parameters...................................................................................................................................................................205Enabling RIP......................................................................................................................................................................................205Configuring route costs...................................................................................................................................................................206Changing the administrative distance...........................................................................................................................................206Configuring redistribution.............................................................................................................................................................. 206Configuring route learning and advertising parameters............................................................................................................ 208Changing the route loop prevention method.............................................................................................................................. 209Suppressing RIP route advertisement on a VRRP or VRRPE backup interface.........................................................................210Configuring RIP route filters using prefix-lists and route maps.................................................................................................210


Setting RIP timers.............................................................................................................................................................................212Displaying RIP Information.....................................................................................................................................................................212Displaying CPU utilization statistics...................................................................................................................................................... 214

RIPng.................................................................................................................................................................................................. 217RIPng Overview........................................................................................................................................................................................217Configuring RIPng....................................................................................................................................................................................217

Enabling RIPng................................................................................................................................................................................. 217Configuring RIPng timers................................................................................................................................................................ 218Configuring route learning and advertising parameters............................................................................................................ 219Redistributing routes into RIPng.................................................................................................................................................... 220Controlling distribution of routes through RIPng........................................................................................................................ 221Configuring poison reverse parameters....................................................................................................................................... 221

Clearing RIPng routes from IPv6 route table....................................................................................................................................... 222Displaying RIPng information................................................................................................................................................................ 222

Displaying RIPng configuration...................................................................................................................................................... 222Displaying RIPng routing table....................................................................................................................................................... 223

OSPFv2............................................................................................................................................................................................... 225OSPF overview......................................................................................................................................................................................... 225OSPF point-to-point links........................................................................................................................................................................227Designated routers in multi-access networks..................................................................................................................................... 227Designated router election in multi-access networks........................................................................................................................ 227OSPF RFC 1583 and 2328 compliance.................................................................................................................................................. 230Reduction of equivalent AS external LSAs............................................................................................................................................230

Algorithm for AS external LSA reduction...................................................................................................................................... 232Support for OSPF RFC 2328 Appendix E...............................................................................................................................................232OSPF graceful restart.............................................................................................................................................................................. 233

OSPF stub router advertisement................................................................................................................................................... 233OSPF Shortest Path First throttling................................................................................................................................................234IETF RFC and internet draft support..............................................................................................................................................234Dynamic OSPF activation and configuration................................................................................................................................ 235

Configuring OSPF.................................................................................................................................................................................... 235Configuration rules..........................................................................................................................................................................235OSPF parameters............................................................................................................................................................................. 235Enable OSPF on the device............................................................................................................................................................. 237Assign OSPF areas............................................................................................................................................................................237Assign a totally stubby area............................................................................................................................................................238Assigning an area range (optional) ............................................................................................................................................... 241Assigning an area cost (optional parameter) ...............................................................................................................................241Assigning interfaces to an area...................................................................................................................................................... 242Setting all OSPFv2 interfaces to the passive state....................................................................................................................... 243Modify interface defaults................................................................................................................................................................243Changing the timer for OSPF authentication changes................................................................................................................245Block flooding of outbound LSAs on specific OSPF interfaces...................................................................................................246Assign virtual links........................................................................................................................................................................... 247Modify virtual link parameters....................................................................................................................................................... 249Changing the reference bandwidth for the cost on OSPF interfaces........................................................................................ 250Define redistribution filters............................................................................................................................................................ 252Modify default metric for redistribution....................................................................................................................................... 254Enable route redistribution............................................................................................................................................................ 254


Disable or re-enable load sharing..................................................................................................................................................255Configure external route summarization..................................................................................................................................... 257Configure default route origination...............................................................................................................................................258Supported match and set conditions............................................................................................................................................259

OSPF non-stop routing........................................................................................................................................................................... 260Synchronization of critical OSPF elements...........................................................................................................................................260

Link state database synchronization.............................................................................................................................................260Neighbor router synchronization.................................................................................................................................................. 261Interface synchronization............................................................................................................................................................... 261

Standby module operations...................................................................................................................................................................262Neighbor database.......................................................................................................................................................................... 262LSA database.................................................................................................................................................................................... 262

Enabling and disabling NSR................................................................................................................................................................... 262Limitations of NSR........................................................................................................................................................................... 263

Disabling configuration...........................................................................................................................................................................263OSPF distribute list.................................................................................................................................................................................. 264

Configuring an OSPF distribution list using ACLs ........................................................................................................................264Configuring an OSPF distribution list using route maps ............................................................................................................265Modify SPF timers............................................................................................................................................................................ 266Modify redistribution metric type..................................................................................................................................................267Modify administrative distance......................................................................................................................................................267Configure OSPF group LSA pacing................................................................................................................................................. 268Modify OSPF traps generated........................................................................................................................................................ 269Modify exit overflow interval.......................................................................................................................................................... 270Specify types of OSPF Syslog messages to log............................................................................................................................. 270Configuring an OSPF network type................................................................................................................................................271Configuring OSPF Graceful Restart................................................................................................................................................271Configuring OSPF router advertisement.......................................................................................................................................273Configuring OSPF shortest path first throttling........................................................................................................................... 274

Displaying OSPF information................................................................................................................................................................. 275Displaying general OSPF configuration information................................................................................................................... 276Displaying OSPF area information.................................................................................................................................................278Displaying OSPF neighbor information.........................................................................................................................................278Displaying OSPF interface information......................................................................................................................................... 280Displaying OSPF interface brief information................................................................................................................................ 282Displaying OSPF route information............................................................................................................................................... 283Displaying OSPF database information........................................................................................................................................ 285Displaying OSPF external link state information......................................................................................................................... 286Displaying OSPF database-summary information.......................................................................................................................287Displaying OSPF database link state information........................................................................................................................287Displaying OSPF ABR and ASBR information................................................................................................................................288Displaying OSPF trap status............................................................................................................................................................289Viewing Configured OSPF point-to-point links............................................................................................................................. 289Displaying OSPF virtual neighbor and link information..............................................................................................................290Clearing OSPF neighbors................................................................................................................................................................ 292Displaying OSPF Graceful Restart information............................................................................................................................ 292Displaying OSPF Router Advertisement information.................................................................................................................. 293

Clearing OSPF information.....................................................................................................................................................................294Clearing OSPF neighbors................................................................................................................................................................ 294Disabling and re-enabling the OSPF process............................................................................................................................... 294


Clearing OSPF routes.......................................................................................................................................................................294

OSPFv3............................................................................................................................................................................................... 295OSPFv3 overview..................................................................................................................................................................................... 295LSA types for OSPFv3.............................................................................................................................................................................. 295Configuring OSPFv3................................................................................................................................................................................ 296

Enabling OSPFv3.............................................................................................................................................................................. 296Assigning OSPFv3 areas.................................................................................................................................................................. 297Assigning an area cost for OSPFv3 (optional parameter)........................................................................................................... 301Specifying a network type...............................................................................................................................................................302Configuring virtual links.................................................................................................................................................................. 303Changing the reference bandwidth for the cost on OSPFv3 interfaces....................................................................................304Redistributing routes into OSPFv3.................................................................................................................................................305Filtering OSPFv3 routes................................................................................................................................................................... 309Configuring default route origination........................................................................................................................................... 311Modifying Shortest Path First timers.............................................................................................................................................312Modifying administrative distance................................................................................................................................................ 313Configuring the OSPFv3 LSA pacing interval................................................................................................................................ 314Modifying exit overflow interval.....................................................................................................................................................314Modifying external link state database limit................................................................................................................................ 314Setting all OSPFv3 interfaces to the passive state....................................................................................................................... 315Modifying OSPFv3 interface defaults............................................................................................................................................ 315Disabling or re-enabling event logging......................................................................................................................................... 316IPsec for OSPFv3.............................................................................................................................................................................. 316Configuring IPsec for OSPFv3.........................................................................................................................................................317Configuring OSPFv3 Graceful Restart Helper mode....................................................................................................................322Configuring OSPFv3 Non-stop routing (NSR)................................................................................................................................323

Displaying OSPFv3 information............................................................................................................................................................. 323General OSPFv3 configuration information................................................................................................................................. 324Displaying OSPFv3 area information.............................................................................................................................................324Displaying OSPFv3 database information.................................................................................................................................... 325Displaying IPv6 interface information........................................................................................................................................... 329Displaying IPv6 OSPFv3 interface information.............................................................................................................................330Displaying OSPFv3 memory usage................................................................................................................................................ 334Displaying OSPFv3 neighbor information.....................................................................................................................................335Displaying routes redistributed into OSPFv3............................................................................................................................... 338Displaying OSPFv3 route information........................................................................................................................................... 339Displaying OSPFv3 SPF information.............................................................................................................................................. 340Displaying OSPFv3 GR Helper mode information .......................................................................................................................343Displaying OSPFv3 NSR information............................................................................................................................................. 343Displaying IPv6 OSPF virtual link information.............................................................................................................................. 344Displaying OSPFv3 virtual neighbor information.........................................................................................................................344IPsec examples.................................................................................................................................................................................345

OSPFv3 clear commands .......................................................................................................................................................................352Clearing all OSPFv3 data................................................................................................................................................................. 352Clearing OSPFv3 data in a VRF....................................................................................................................................................... 352Clearing all OSPFv3 packet counters............................................................................................................................................. 352Scheduling Shortest Path First (SPF) calculation..........................................................................................................................352Clearing all redistributed routes from OSPFv3............................................................................................................................ 353Clearing OSPFv3 neighbors............................................................................................................................................................ 353


Configuring BGP4 (IPv4)................................................................................................................................................................... 355BGP4 overview......................................................................................................................................................................................... 355

Relationship between the BGP4 route table and the IP route table......................................................................................... 356How BGP4 selects a path for a route (BGP best path selection algorithm)..............................................................................357BGP4 message types....................................................................................................................................................................... 358Grouping of RIB-out peers..............................................................................................................................................................360

Implementation of BGP4........................................................................................................................................................................360BGP4 restart.............................................................................................................................................................................................360

BGP4 Peer notification during a management module switchover.......................................................................................... 361BGP4 neighbor local AS...................................................................................................................................................................362

Basic configuration and activation for BGP4....................................................................................................................................... 364Disabling BGP4.................................................................................................................................................................................364

BGP4 parameters.................................................................................................................................................................................... 365Parameter changes that take effect immediately........................................................................................................................366Parameter changes that take effect after resetting neighbor sessions.................................................................................... 367Parameter changes that take effect after disabling and re-enabling redistribution............................................................... 367

Memory considerations..........................................................................................................................................................................367Memory configuration options obsoleted by dynamic memory............................................................................................... 368

Basic configuration tasks required for BGP4....................................................................................................................................... 368Enabling BGP4 on the device..........................................................................................................................................................368Changing the device ID....................................................................................................................................................................368Setting the local AS number........................................................................................................................................................... 369Adding a loopback interface...........................................................................................................................................................370Adding BGP4 neighbors.................................................................................................................................................................. 370Adding a BGP4 peer group............................................................................................................................................................. 378

Optional BGP4 configuration tasks....................................................................................................................................................... 381Changing the Keep Alive Time and Hold Time............................................................................................................................. 381Changing the BGP4 next-hop update timer................................................................................................................................. 381Enabling fast external fallover........................................................................................................................................................382Changing the maximum number of paths for BGP4 Multipath load sharing.......................................................................... 382Customizing BGP4 Multipath load sharing...................................................................................................................................383Specifying a list of networks to advertise..................................................................................................................................... 384Changing the default local preference.......................................................................................................................................... 385Using the IP default route as a valid next-hop for a BGP4 route............................................................................................... 386Changing the default MED (Metric) used for route redistribution.............................................................................................386Enabling next-hop recursion.......................................................................................................................................................... 386Changing administrative distances................................................................................................................................................389Requiring the first AS to be the neighbor AS................................................................................................................................390Disabling or re-enabling comparison of the AS-Path length...................................................................................................... 391Enabling or disabling comparison of device IDs.......................................................................................................................... 391Configuring the device to always compare Multi-Exit Discriminators.......................................................................................391Treating missing MEDs as the worst MEDs...................................................................................................................................392Configuring route reflection parameters......................................................................................................................................392Configuring confederations............................................................................................................................................................395Aggregating routes advertised to BGP4 neighbors..................................................................................................................... 398

Configuring BGP4 restart....................................................................................................................................................................... 398Configuring BGP4 Restart for the global routing instance......................................................................................................... 398Configuring BGP4 Restart for a VRF.............................................................................................................................................. 399Configuring timers for BGP4 Restart (optional)........................................................................................................................... 399BGP4 null0 routing...........................................................................................................................................................................400


Configuring BGP4 null0 routing..................................................................................................................................................... 400Modifying redistribution parameters................................................................................................................................................... 403

Redistributing connected routes................................................................................................................................................... 404Redistributing RIP routes................................................................................................................................................................ 404Redistributing OSPF external routes............................................................................................................................................. 404Redistributing static routes............................................................................................................................................................ 405Redistributing IBGP routes............................................................................................................................................................. 405

Filtering.....................................................................................................................................................................................................405AS-path filtering............................................................................................................................................................................... 405BGP4 filtering communities............................................................................................................................................................408Defining and applying IP prefix lists.............................................................................................................................................. 410Defining neighbor distribute lists.................................................................................................................................................. 411Defining route maps........................................................................................................................................................................411Using a table map to set the tag value..........................................................................................................................................419Configuring cooperative BGP4 route filtering.............................................................................................................................. 419

Four-byte Autonomous System Numbers (AS4)..................................................................................................................................422Enabling AS4 numbers.................................................................................................................................................................... 422

BGP4 AS4 attribute errors...................................................................................................................................................................... 426Error logs...........................................................................................................................................................................................426

Configuring route flap dampening........................................................................................................................................................427Globally configuring route flap dampening..................................................................................................................................428Using a route map to configure route flap dampening for a specific neighbor...................................................................... 429Removing route dampening from a route....................................................................................................................................429Displaying and clearing route flap dampening statistics............................................................................................................ 430

Generating traps for BGP4..................................................................................................................................................................... 431Configuring BGP4.................................................................................................................................................................................... 431Entering and exiting the address family configuration level..............................................................................................................433BGP route reflector................................................................................................................................................................................. 433

Configuring BGP route reflector.................................................................................................................................................... 434Specifying a maximum AS path length................................................................................................................................................. 436

Setting a global maximum AS path limit.......................................................................................................................................437Setting a maximum AS path limit for a peer group or neighbor............................................................................................... 437

BGP4 max-as error messages................................................................................................................................................................438Maximum AS path limit error.........................................................................................................................................................438Memory limit error.......................................................................................................................................................................... 438

Originating the default route................................................................................................................................................................. 438Changing the default metric used for route cost................................................................................................................................ 439Configuring a static BGP4 network ...................................................................................................................................................... 439

Setting an administrative distance for a static BGP4 network................................................................................................... 439Limiting advertisement of a static BGP4 network to selected neighbors.................................................................................440Dynamic route filter update........................................................................................................................................................... 440

Generalized TTL Security Mechanism support.................................................................................................................................... 442Displaying BGP4 information.................................................................................................................................................................442

Displaying summary BGP4 information........................................................................................................................................443Displaying the active BGP4 configuration.....................................................................................................................................445Displaying summary neighbor information................................................................................................................................. 446Displaying BGP4 neighbor information........................................................................................................................................ 447Displaying peer group information............................................................................................................................................... 455Displaying summary route information........................................................................................................................................456Displaying VRF instance information.............................................................................................................................................456


Displaying the BGP4 route table.................................................................................................................................................... 456Displaying BGP4 route-attribute entries.......................................................................................................................................463Displaying the routes BGP4 has placed in the IP route table.....................................................................................................464Displaying route flap dampening statistics.................................................................................................................................. 465Displaying the active route map configuration............................................................................................................................ 466Displaying BGP4 graceful restart neighbor information.............................................................................................................466Displaying AS4 details..................................................................................................................................................................... 467Updating route information and resetting a neighbor session................................................................................................. 473Using soft reconfiguration.............................................................................................................................................................. 474Dynamically requesting a route refresh from a BGP4 neighbor................................................................................................476Closing or resetting a neighbor session........................................................................................................................................478Clearing and resetting BGP4 routes in the IP route table...........................................................................................................479

Clearing traffic counters......................................................................................................................................................................... 479Clearing diagnostic buffers.................................................................................................................................................................... 479

Configuring BGP4+............................................................................................................................................................................481BGP4+ overview.......................................................................................................................................................................................481BGP global mode ....................................................................................................................................................................................481IPv6 unicast address family....................................................................................................................................................................482BGP4+ neighbors.....................................................................................................................................................................................483BGP4+ peer groups................................................................................................................................................................................. 483BGP4+ next hop recursion..................................................................................................................................................................... 484BGP4+ NLRIs and next hop attributes.....................................................................................................................................

Date post:	26-Apr-2020
Category:	Documents
Upload:	others
View:	18 times
Download:	0 times

FastIron Ethernet Switch Layer 3 Routing Configuration...

Documents