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Next Generation Networks Next Generation Networks Emulating Existing Services Over Emulating Existing Services Over All IP networksAll IP networks
Mati Epstein
Sales Director
www.rad.com
master.ppt Slide 2
Agenda
• Ethernet Access
• Pseudo wire Principle & Solution Overview
• Emulated Services – Implementation options
• Summary
master.ppt Slide 3
Ethernet Access
master.ppt Slide 4
Ethernet Access: Initial Positioning
• Ethernet access networks were considered for new backbones only• Huge saving in the access is expected: “it’s all about money, not technology”
Traditional (Legacy) Networks
Traditional
Access
Existing Infrastructure
EthernetAccess
New Packet-Switched Networks (PSN)
Future (new) Infrastructure
New Backbone
- GbE (Metro)
- MPLS
- IP
Legacy Backbone
- SDH
- ATM
master.ppt Slide 5
Ethernet Access to Legacy and Packet-Switched Networks
• Co-existence of legacy and new packet-switched backbone networks
• Same Ethernet access to SDH and ATM as well as to PSN• “Bottom-Up” approach to Ethernet access deployment
New Backbone
- GbE
- MPLS
- IP
Legacy Backbone
- SDH
- ATM
EthernetAccess
Traditional
Access
master.ppt Slide 6
Evolution of Ethernet Service Delivery
NTU LegacyAccess
TDM, FR, ATM
Legacy CoreATM, SDH
PSN CoreEthernet, IP, MPLS
PSN CoreEthernet, IP, MPLS
NTU Legacy/EthernetAccess
TDM, FR, ATMEthernet
NTU PSN Access
Ethernet, MPLS
• Ethernet service (user) interface at Network Termination Unit (NTU)
• PSN (packet Switched Network) core, and mix of Ethernet and Legacy in the access
• “All PSN” network PSN, Access and Core
master.ppt Slide 7
Intelligent Demarcation Concept• Clear demarcation
• Truck roll is not affordable in low-cost Ethernet services
• Extensive monitoring and diagnostics capabilities including:• Loopback
• Ping and Trace Route
• Cable tester
• Traffic management (QoS) starting at customer premises• Per service traffic classification and prioritization
• Priority marking for ‘port based service’
• Traffic policing
• Security: Access control list, RADIUS, SSL, SSH
• Remote manageability
Intelligent Demarcation is essential for minimizing operational costs
• Dying gasp
• Fault propagation
• Extensive statistics
PE
Provider’s Node
PE
Provider’s Node Customer Premises
CPENTU
End-to-end Service control, SLA monitoring and diagnostics
Customer PremisesCPE NTU
Packet SwitchedNetwork
Eth/IP/MPLS
NNI NNI UNIUNI
master.ppt Slide 8
Ethernet Network Termination Unit (E-NTU) - ETX-102/202
• Carriers owned, customer located device
• Allows for Ethernet in the local loop
• Typically applications:• CLE for metro networks
• CLE for NG-SDH/Sonet networks using Ethernet access to connect to the NG-ADM
Packet Switched,SDH/SONET
or ATMNetwork
100Base Fx
EdgeDevice
EdgeDevice
Management
100Base Fx
GbE
Customer Premises
CPE
10/100BaseT
Customer Premises
10/100BaseT
CPE
Customer Premises
CPE10/100BaseT
1000Sx
Customer Premises
CPE10/100BaseT1000Sx
ETX-102
ETX-102
ETX-202
ETX-202
GbE
master.ppt Slide 9
Egate Gateways and RICs Innovative Channelized Ethernet over TDM
• Egate is a Gateway connecting TDM and Packet networks
• Egate-100 Connects up to 126 remote LANs over FE1/FT1, E1/T1 and n*E1/T1
• Egate-20 connects up to 248 LANs over FE1/FT1 and E1/T1
• Reduces equipment costs by 70% and considerably reduces maintenance costs versus Router and Cross Connect alternatives
• Complete solution with RADs RIC, FCD-x and ASMi-52 lines
POP/CO
8 x E1FE
Egate-20
SDH/SONET
DACS
POP
n x E1
Ethernet
RICi-E1/T1E1/FE1
Egate-100
STM-1/OC-3GbE
PSNn x E1
n x E1
Ethernet
RICi-4E1
RICi-8E1
Wimax
master.ppt Slide 10
Pseudo wire Principle & Solution Overview
master.ppt Slide 11
Emulated Services: The Challenges
• Maintain legacy services
• Optimization of BW usage over DSL access link
• Synchronization and clock distribution over a Packet Network
• Support legacy services while keeping IP DSLAM cost low
• Reduce DSLAM complexity to the lowest possible level
• Same DSL card for different emulated services.
• Multiservice offering at customer premises (multiservice over single access link as an example : FR +
LAN or FR + Leased Line)
master.ppt Slide 12
Pseudo wire – The ConceptPseudo wire – The Concept
The synchronous bit stream is chopped into packets
Legacy Serviceframe
Legacy serviceframe
Ethernet/ MPLS/ IP Packets
Ethernet/IP
Ethernet/ MPLS/ IP Packets
MPLS/IP headers are added
Packets are forwarded to destination over the IP network
At destination, the original bit stream is reconstructed by removing MPLS/ IP headers, concatenating the packets, and regenerating the clock
master.ppt Slide 13
Pseudo wire Technology - Pseudo wire Technology - StandardsStandards
• RAD complies with the following TDMoIP Standards:• IETF - ietf-pwe3-tdmoip
• ITU - Y.1413 – TDMoIP section
• MFA – IA 4.0
• MEF – CESoE (Q2/06)
• Other pseudo wire standards• IETF - ietf-pwe3-CESoPSN
• IETF - ietf-pwe3-SAToP
• ITU - Y.1413 – CESoPSN and SAToP sections
• RAD is committed to Pseudo wire technology and will support most pseudo wire standards by 2006.
master.ppt Slide 14
Migration to IP/MPLS Networks: Maintaining Legacy Services
• Maintaining existing services over new IP infrastructure• IP DSLAM as multiservice access node especially for legacy services • There are several options for Service Emulation :
• Edge-Edge• CPE-CPE
CPE Access
Legacy Network
Access CPEPOTS/ISDNLeased Lines
X.25/FR/ATM
POTS/ISDNLeased LinesX.25/FR/ATM
IP/MPLS Network
Edge-to-Edge Service Emulation
CLEAccess Access
CLE
CLE-to-CLE Service Emulation
POTS/ISDNLeased Lines
X.25/FR/ATM
POTS/ISDNLeased LinesX.25/FR/ATM
CPE CPE
master.ppt Slide 15
Emulated Services: Implementation Options
master.ppt Slide 16
E1 Trunking over MPLSfor Cellular and business connectivity
• Provides Time Warner Cable customers with a migration path to Metro Ethernet services by eliminating the need for separate, costly T1/T3 circuits
• Cost-effective, low maintenance, compact and scalable solution
• Large positive impact on Time Warner Cable revenue forecast for the coming years
master.ppt Slide 17
DSL with TDMoIP for Cellular backhauling and PABX connectivity
Key Customers• Carriers with PSN core• DSLAM install base with Ethernet uplink
Key Customers• Carriers with PSN core• DSLAM install base with Ethernet uplink
Key Application• Leased lines over IP networks• Cellular backhaul
Key Application• Leased lines over IP networks• Cellular backhaul
Key Features• 2 or 4 wires SHDSL• Supports CESoPSN or TDMoIP (Over IP, Ethernet or MPLS)• Serial data or E1 CES• NTR/Adaptive clock mode• E1 ATM is planned for October 2005• Structured or unstructure modes• Management via SNMP,Telnet or terminal
Key Features• 2 or 4 wires SHDSL• Supports CESoPSN or TDMoIP (Over IP, Ethernet or MPLS)• Serial data or E1 CES• NTR/Adaptive clock mode• E1 ATM is planned for October 2005• Structured or unstructure modes• Management via SNMP,Telnet or terminal
Site A
LA-110
PBXBTS/NodeB
E1
PSNCore
Site B
LA-110
PBXBTS/NodeB
E1
2G/3G BSC/RNC
PSTN
GMUX
GbE N x E1
TDM
SHDSL/VDSL/F.O.
MSAG MSAG
SHDSL/VDSL/F.O.
DSLDSL
master.ppt Slide 18
Seamless Ethernet Services over PSN and TDM Networks
“Most Impressive path with RAD fiber CPE.. and RAD Ethernet over 8E1” MEF multi-vendor Carrier Ethernet interoperability test, Berlin, 2005
… And what about voice
legacy?
master.ppt Slide 19
nE1 IMASTM-1ATM
2G/3G Co-location over PSN
Ethernet
ACE-3x00 3G RNC
Ethernet
ACE-3x00nE1 IMA/UNI
STM1
3G Node B
Packet SwitchedNetwork
• Aggregation and tunneling (pseudo-wire) of both TDM traffic (2G with TDMoIP/CESoPSN) and ATM traffic (3G with ATMoPSN) over the same packet transport network
• Transparent backhaul of Abis and lub over the PSN
• Encapsulation of ATM cells over PSN according to:
draft-ietf-pwe3-atm-encap
2G BTS
E1 TDM 2G BSC
nE1TDM
Ethernet
ACE 3x00Node B
nE1 IMA/UNI STM1
PSNPSN
Cellular backhaul over PSNAggregation solution
master.ppt Slide 20
Packet SwitchedNetwork
Eth/IP/MPLS
Ethernet over any network – Combined PSN and NG SDH Networks
EdgeDeviceUTP
GE/FE
FOGE/FE
Customer PremisesEdge Device
GE/FE
FOGE/FE
ETX CPE
Ethernet
E1PBX
LANIPmux-11/14
Customer Premises
GE
Gmux-2000
FE
STM-1E1/E3
Customer PremisesSDH/SonetNetwork
ADM ADM
Egate
GE/FE
STM-1/E1
E1/T1RIC
RIC
10/100BaseT
n x E1/T1
Customer Premises
10/100BaseT
NG ADM
CPEETXGE
NG ADM
FECPE ETX
FE
GE/FE
IP-DSLAM
Customer Premises
Customer Premises
ADM
TDMoIP Voice to the PSTN Network
CPE ETX
Customer Premises
master.ppt Slide 21
Summary
• While access and core technologies are migrating to packet based networks, most of carriers revenues are generated by legacy TDM services
• Pseudo Wires with TDMoIP products enable this migration to be smooth and ensures continued TDM services revenues.
• RAD has a complete pseudo wire solution to enable legacy services for Cellular Backhaul, PSTN access over packet and Enterprise Toll Bypass.
master.ppt Slide 22
www.rad.com
thank you
http://www.rad.com