Nokia 7705 SAR-W Series Manual page 333

Service aggregation router, mpls

Table of Contents

3HE 18686 AAAB TQZZA

• a set consisting of a pair of forward RSVP-TE LSPs and a pair of reverse

RSVP-TE LSPs, each with a single primary or secondary path. The pair of

forward LSPs can originate and terminate on different routers. The pair of

reverse LSPs must mirror the forward pair. In this case, the path profile ID and

the path group ID configured for each LSP must match. Because each LSP has

a single path, the bidirectionality constraint applies automatically to the forward

and reverse LSPs, which share the same originating node and the same

terminating routers.

• a pair consisting of a forward RSVP-TE LSP and a reverse RSVP-TE LSP, each

with a primary path and a single secondary path, or each with two secondary

paths. Because the two paths of each LSP inherit the same LSP level path

profile ID and path group ID configuration, the NRC-P path computation

algorithm cannot guarantee that the primary paths in both directions meet the

bidirectionality constraint. That is, it is possible that the primary path for the

forward LSP shares the same links as the secondary path of the reverse LSP

and vice-versa.

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