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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
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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.
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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
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Single node Interconnect
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Two protected domains interconnected by single node(s).
Single point of failure!
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Dual node Interconnect
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Two protected domains interconnected by dual node(s)
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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
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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)
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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