Joint IEEE-SA and ITU Workshop on Ethernet
Multi Domain Segmented
network Protection (MDSP)
Huub van Helvoort,
Senior Researcher
Huawei Technologies
Geneva, Switzerland, 13 July 2013
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.
Geneva, Switzerland, 2 13 July 2013
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Introduction: G.MDSP
(cont’d)
3.
Each protected domain may be in a
different administrative domain
and support protection using either
the same or different layer networks.
4.
Both single node and dual node
interconnection between protected
domains are described.
Geneva, Switzerland, 2 13 July 2013
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Possible Scenarios
Protected
Domain
Network-to-UNI
UNI
Network-to-ENI
Protected
Domain
Protected
Domain
ENI
Network-to-Network
Protected
Domain
Geneva, Switzerland,13 July 2013
Protected
Domain
Protected
Domain
4
Single node Interconnect
Two protected domains interconnected
by single node(s).
Single point of failure!
Geneva, Switzerland,13 July 2013
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Dual node Interconnect
Two protected domains interconnected
by dual node(s)
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Multi Domain example
ETH Domain
ETH
(G.8031/G.8032)
Segment protection 1
OTN Domain
OTN
(G.873.1/G.873.2)
Segment protection 2
ETH Domain
ETH
(G.8031/G.8032)
Segment protection 3
End-to-end protection
Each domain has its own, technology
based, protection mechanism.
Geneva, Switzerland,13 July 2013
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Study points
• End-to-end service survivability along
the concatenated protected domain for
each case:
• Node failure analysis (restrict to one
domain, adjacent domains)
• Identify domain interactions
• Possible hold-off timers (end-to-end,
per domain, technology dependent)
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Conclusion
The main objective for development of
this recommendation is to define the
interworking of protection mechanisms
This is work in progress in
Q9/SG15
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Thank you
Q&A
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