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

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

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

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

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

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

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

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

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

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