1. Multi Domain Segmented network Protection (MDSP)
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

2. Introduction: G.MDSP
Describes end-to-end protection across multiple cascaded protected domains to support service survivability.
This is achieved via concatenation of multiple protection instances/segments in each protected domain.
Geneva, Switzerland, 2 13 July 2013

3. Introduction: G.MDSP (cont’d)
Each protected domain may be in a different administrative domain and support protection using either the same or different layer networks.
Both single node and dual node interconnection between protected domains are described.
Geneva, Switzerland, 2 13 July 2013

4. Possible Scenarios Network-to-UNI Network-to-ENI Network-to-Network
Protected
Domain
Network-to-UNI
UNI
Network-to-ENI
ENI
Protected
Domain
Network-to-Network
Protected
Domain
Protected
Domain
Geneva, Switzerland,13 July 2013

5. Single node Interconnect
Two protected domains interconnected by single node(s).
Single point of failure!
Geneva, Switzerland,13 July 2013

6. Dual node Interconnect
Two protected domains interconnected by dual node(s)
Geneva, Switzerland,13 July 2013

7. End-to-end protection
Multi Domain example
ETH Domain
OTN Domain
ETH Domain
ETH
(G.8031/G.8032)
OTN
(G.873.1/G.873.2)
ETH
(G.8031/G.8032)
Segment protection 1
Segment protection 2
Segment protection 3
End-to-end protection
Each domain has its own, technology based, protection mechanism.
Geneva, Switzerland,13 July 2013

8. Node failure analysis (restrict to one domain, adjacent domains)
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)
Geneva, Switzerland,13 July 2013

9. This is work in progress in Q9/SG15
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
Geneva, Switzerland,13 July 2013

10. Thank you
Q & A
Geneva, Switzerland, 2 13 July 2013