pwe3-8----Page:9
1 2 3 4 5 6 7 8 9 10 11 12 13 14
|
MS-PWs and RSVP-TE Requirements - Resiliency End-to-end backup MS-PW RSVP-TE shared style reservations – RFC 3209 RSVP-TE allows primary and backup PWs to be associated with each other and share resources on common segments Ability to traverse different S-PEs i.e. avoid fate sharing RSVP-TE Explicit routing Mechanisms to perform a fast switchover from a primary PW to a backup PW upon failure detection RSVP-TE global repair mechanisms S-PEs can also use RSVP-TE fast reroute Mechanisms to propagate PW segment failure to other MS-PW segments RSVP-TE PathErr/ResvErr/Notify – Regular procedures |