v

Cumulus® Linux® 2.1

What’s New and Different from CL 2.0.x

Last Updated: August 4, 2014

cumulusnetworks.com 2

•ifupdown2 = new streamlined syntax for configs

•ethtool enhanced to deprecate cl-sfputil

•PTM changes and enhancements

•New x86 platform support

•Spanning tree protocol (STP) support for VRR

Major Changes from Cumulus Linux 2.0.x to 2.1

ifupdown2

Improvement to ifupdown package in Debian

Streamlined syntax in /etc/network/interfaces

New interface/sub-interface dependency awareness

New glob substitution

New * option for source

Old ifupdown syntax still works

For backwards compatibility

New ifupdown2 syntax preferred – less typing

cumulusnetworks.com 3

Changes in /etc/network/interfaces

Streamlined syntax

lo

swp• Definition, link speed, duplex, autonegotiate

bridge

• VLANs/sub-interfaces, STP, glob

bond

• Definition, glob

cumulusnetworks.com 4

lo (Loopback)

cumulusnetworks.com 5

Prior to CL 2.1 CL 2.1 and Later

auto lo

iface lo inet loopback

auto lo:1

iface lo:1 inet static

address 10.1.1.1/32

auto lo:2

iface lo:2 inet static

address 10.2.2.2/32

auto lo

iface lo inet loopback

address 10.1.1.1/32

address 10.2.2.2/32

Do not explicitly define loopback interfaces any more;

use the default lo

Switch Port (swp) – Definition

cumulusnetworks.com 6

Prior to CL 2.1 CL 2.1 and Later

auto swp19

iface swp19 inet manual

post-up ip link set $IFACE alias customerA

up link set $IFACE up

down link set $IFACE down

auto swp19

iface swp19

alias customerA

No more inet, up, or down verses;

simplified alias

alias shows up in ip linkcumulus@switch:~$ ip link show dev swp193: swp19: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 500

link/ether 44:38:39:00:03:c1 brd ff:ff:ff:ff:ff:ffalias customerA

Switch Port (swp) – Link Speed, Duplex, Autonegotiate

cumulusnetworks.com 7

Prior to CL 2.1 CL 2.1 and Later

auto swp1

iface swp1 inet static

address 10.1.1.1/24

mtu 9000

pre-up /sbin/ethtool -s $IFACE speed 1000 duplex half autoneg off

up ip link set $IFACE up

down ip link set $IFACE down

auto swp1

iface swp1

address 10.1.1.1/24

mtu 9000

link-speed 1000

link-duplex half

link-autoneg off

New link-* commands

Bridge

cumulusnetworks.com 8

Prior to CL 2.1 CL 2.1 and Later auto swp19

iface swp19 inet manual

up link set $IFACE up

down link set $IFACE down

auto swp19.100

iface swp19.100 inet manual

up link set $IFACE up

down link set $IFACE down

auto swp19.200

iface swp19.200 inet manual

up link set $IFACE up

down link set $IFACE down

auto vlan100

iface vlan100 inet manual

bridge_ports swp19.100

mstpctl_stp on

auto vlan200

iface vlan200 inet manual

mstpctl_ports swp19.200

mstpctl_stp on

auto swp19

iface swp19

auto vlan100

iface vlan100

bridge-ports swp19.100

bridge-stp on

auto vlan200

iface vlan200

bridge-ports swp19.200

bridge-stp onNo more inet, up, or down verses

No need to define sub-interfacesUse bridge-ports, bridge-stp

(note – instead of _)

Bridge – glob

cumulusnetworks.com 9

Long Form Combined

auto swp3

iface swp3

auto swp4

iface swp4

auto swp5

iface swp5

auto vlan100

iface vlan100

bridge-ports swp3.100 swp4.100 swp5.100

auto swp3

iface swp3

auto swp4

iface swp4

auto swp5

iface swp5

auto vlan100

iface vlan100

bridge-ports glob swp3-5.100

Use glob

regular

expression

Bond

cumulusnetworks.com 10

Prior to CL 2.1 CL 2.1 and Later auto bond0

iface bond0 inet manual

up link set $IFACE up

down link set $IFACE down

bond-slaves swp3 swp4

bond-miimon 100

bond-min-links 1

bond-mode 802.3ad

bond-xmit_hash_policy layer3+4

bond-lacp-rate 1

auto swp3

iface swp3

auto swp4

iface swp4

auto bond0

iface bond0

bond-slaves swp3 swp4

bond-miimon 100

bond-min-links 1

bond-mode 802.3ad

bond-xmit-hash-policy layer3+4

bond-lacp-rate 1

auto swp3

iface swp3 inet manual

up link set $IFACE up

down link set $IFACE down

auto swp4

iface swp4 inet manual

up link set $IFACE up

down link set $IFACE down

No inet, up, or down verses;

still need to first define bond members

Bond – glob

cumulusnetworks.com 11

Long Form Combined auto swp3

iface swp3

auto swp4

iface swp4

auto bond0

iface bond0

bond-slaves swp3 swp4

bond-miimon 100

bond-min-links 1

bond-mode 802.3ad

bond-xmit-hash-policy layer3+4

bond-lacp-rate 1

auto swp3

iface swp3

auto swp4

iface swp4

auto bond0

iface bond0

bond-slaves glob swp3-4

bond-miimon 100

bond-min-links 1

bond-mode 802.3ad

bond-xmit-hash-policy layer3+4

bond-lacp-rate 1

Use glob

regular

expression

New * Option for source

cumulusnetworks.com 12

/etc/network/interfaces /etc/network/ansible/swp1

auto lo

iface lo inet loopback

auto eth0

iface eth0 inet dhcp

source /etc/network/ansible/*

/etc/network/ansible/swp2

auto swp1

iface swp1

link-speed 1000

auto swp2

iface swp2

link-speed 1000

ethtool Change

cumulusnetworks.com 13

Prior to CL 2.1 CL 2.1 and Later

sudo cl-sfputil -d | egrep'(swp|RXPower :|TXPower:|EthernetComplianceCode)'

sudo ethtool -m | egrep '(swp|RXPower :|TXPower :|EthernetComplianceCode)'

Output (same)

swp1: SFP detected

EthernetComplianceCodes : 1000BASE-LX

RXPower : -10.4479dBm

TXPower : 18.0409dBm///

PTM Changes and Enhancements

Changes New script/topology.dot file location

• /etc/ptm.d instead of /etc/cumulus/ptm.d

Enhancements New sample topology.dot file

• /usr/share/doc/ptm/examples Ability to re-read config file without restarting ptmd New PTM get commands

• get-status <detail>, get-debug <bfd> | <lldp> New support for BFD Notifications now in CSV format

cumulusnetworks.com 14

x86 Platform Support

Supported hardware

Dell S6000-ON – first supported x86 switch

Differences from PowerPC-based switches

GRUB boot loader

ext4 file system with LVM

• /boot partition

• Each image slot is a logical volume, SYSROOT1 and SYSROOT2

• Grow and shrink logical volumes using LVM

• No overlay file system

cumulusnetworks.com 15

Virtual Router Redundancy (VRR) – STP support starting in CL 2.1

Enabling spanning tree protocol (STP) for VRR

Enable bpdufilter on peer link

Enable bpduguard on host-facing ports

cumulusnetworks.com 16

Active

Host

Router 1 Router 2

Backup

peer link

L3

L2

© 2014 Cumulus Networks. Cumulus Networks, the Cumulus Networks Logo, and Cumulus Linux are trademarks or registered trademarks of Cumulus Networks, Inc. or its

affiliates in the U.S. and other countries. Other names may be trademarks of their respective owners. The registered trademark Linux® is used pursuant to a sublicense from LMI,

the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide basis.

Thank You!

cumulusnetworks.com 17