Session 7 : Data over Transport Networks Session 7 : Data over - - PowerPoint PPT Presentation

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6

I nternational Telecom m unication Union

ITU-T

Session 7 : Data over Transport Networks Session 7 : Data over Transport Networks Highlights & Conclusions Highlights & Conclusions

Malcolm BETTS Nortel Networks

Ethernet Services over Transport MPLS Ethernet Services over Transport MPLS Italo Italo BUSI, Alcatel BUSI, Alcatel Highly Scalable Ethernets Highly Scalable Ethernets Paul BOTTORFF, Nortel Networks Paul BOTTORFF, Nortel Networks Ethernet OAM and Protection Switching Ethernet OAM and Protection Switching Hiroshi OHTA, NTT Hiroshi OHTA, NTT Next Generation Ethernet Next Generation Ethernet Alan Alan McGUIRE McGUIRE, BT , BT

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 2

ITU-T

• T-MPLS

can be used as a carrier grade infrastructure to support Ethernet services

• Multi service capability
• Ethernet service segregation and

multiplexing

• Infrastructure OAM and protection

switching

• S

upports p2p, mp2mp Ethernet services

Highlights from Presentation 1 “Ethernet Services over Transport MPLS”

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 3

ITU-T

• Global Virtual Private Network that

supports multiple service instances

• S

upports multiple (client) services

• Offers p2p, LAN and tree topology
• Ethernet - continuing evolution
• 802.1ah adds full encapsulation/ hierarchy

for scalability and security

• Carrier grade OAM with Y.1731/ 802.1ag
• Protection switching G.8031/ 802.1aq

Highlights from Presentation 2 “Highly Scalable Ethernets”

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 4

ITU-T

• OAM defined in Y.1731 and 802.1ag for

fault and performance management

• S

upports fault isolation in multi carrier networks

• Protection switching
• Uses OAM frames
• Rapid recovery for p2p services
• S

DH/ OTN style OAM for Ethernet

Highlights from Presentation 3 “Ethernet OAM and Protection Sw itching”

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 5

ITU-T

• Ethernet
• Ubiquity in Enterprise & the home
• Interface of choice for many applications
• Requirements:
• Multi service capability – one interface
• S

eparation network/ customers and customer/ customer

• S

DH operational features and costs

• Ethernet/ packet flexibility and price point
• PBT is a potential solution

Highlights from Presentation 4 “Next Generation Ethernet”

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 6

ITU-T

• The Transport infrastructure has evolved

from offering simple point to point private line services over S DH/ OTN/ WDM

• Ethernet is the transport service interface of

the future

• Rapidly expanding “ infrastructure” service
• S

upports multiple clients

• Packet transport network is evolving to meet

the scalability and operational challenges

CONCLUSI ONS - Observation

I TU-T W orkshop “NGN and its Transport Netw orks“ Kobe, 2 0 -2 1 April 2 0 0 6 7

ITU-T

• Gap between the IP centric “ top end” of the

transport stratum and the evolving packet based “ infrastructure” services

• Transport network economies of scale rely
• n the aggregation of a large number of

services

• Carrier Ethernet offers flexible connectivity

and QoS capabilities: How do we map from the individual dynamic service demands to the (more stable) aggregated trunks

CONCLUSI ONS - Action