Geneva, Switzerland, 13 July 2013

Multi Domain Segmented network Protection (MDSP)

Huub van Helvoort,Senior Researcher

Huawei Technologies

Joint IEEE-SA and ITU Workshop on Ethernet

Geneva, Switzerland, 2 13 July 2013 2

Introduction: G.MDSP

1. Describes end-to-end protection across multiple cascaded protected domains to support service survivability.

2. This is achieved via concatenation of multiple protection instances/segments in each protected domain.

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Introduction: G.MDSP(cont’d)

4. Both single node and dual node interconnection between protected domains are described.

3. Each protected domain may be in a different administrative domain and support protection using either the same or different layer networks.

Possible Scenarios

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Protected Domain

Network-to-UNI

UNI

Network-to-ENI

ENI

Protected Domain

Protected Domain

Network-to-Network Protected Domain

Protected Domain

Protected Domain

Single node Interconnect

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Two protected domains interconnected by single node(s).

Single point of failure!

Dual node Interconnect

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Two protected domains interconnected by dual node(s)

Multi Domain example

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Each domain has its own, technology based, protection mechanism.

OTN(G.873.1/G.873.2)

Segment protection 1 Segment protection 2

End-to-end protection

ETH(G.8031/G.8032)

ETH(G.8031/G.8032)

Segment protection 3

OTN DomainETH Domain ETH Domain

Study points

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• End-to-end service survivability along the concatenated protected domain for each case:

• Identify domain interactions

• Node failure analysis (restrict to one domain, adjacent domains)

• Possible hold-off timers (end-to-end, per domain, technology dependent)

Conclusion

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The main objective for development of this recommendation is to define the

interworking of protection mechanisms

This is work in progress inQ9/SG15

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Thank you

Q & A