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Segment Protection for P2P VLAN connections

Proposal to extend current Segment Protection to P2P VLAN connections for efficient fault detection and switching mechanism. The mechanism involves monitoring VLAN health and modifying port configurations.

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Segment Protection for P2P VLAN connections

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  1. Segment Protection for P2P VLAN connections Zehavit Alon, Nurit Sprecher IEEE Interim Meeting May 2009

  2. Current Segment Protection Proposed scope and solution • The current Segment Protection proposal includes TESIs only: • “Protect a segment, where a segment is a sequence of links and intervening bridges traversed by a group of Traffic engineered Shared Forwarding Paths”. • The proposed mechanism for protection switching is FDB outbound port modification when a segment fault is detected. • A segment fault is detected by a dedicated MA created for each segment with MEPs on the segment edges.

  3. Proposed enhancement • The same mechanism can be employed for P2P VLAN connections. • In P2P VLAN connection, the member set of the VLAN include only 2 ports, and there is no need for learning on these VLANs. (traffic is flooded to the only available port) • The health of the P2P VLAN segment is monitored by defining an MA for the protected VLAN on the segment. • Protection switching is done by changing the port in the VLAN member set of the affected point to point protected VLANs when a segment fault is detected. • Note: The proposed mechanism is similar to G.8031 • Note: The scenarios covered by new-sultan-segment-protection-technical-proposal-0109-v02.ppt can be supported by this extension

  4. Protection Switching p3 p3 p2 p2 B A 1 2 1 2 3 3 • V1 is a point to point service. • VLAN V1 is defined only on 2 ports on each bridge. • A segment fails • The member set of V1 on bridges A and B is modified

  5. Recommendation • Add protection for P2P VLAN connection to the proposed PAR

  6. Thank You zehavit.alon@nsn.com nurit.sprecher@nsn.com

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