Nokia 7705 SAR-W Series Manual page 96

Service aggregation router, mpls

Table of Contents

MPLS and RSVP-TE

The 7705 SAR does not support CSPF path computation for an SR-TE LSP and

uses hop-to-label translation to compute the path. The ingress LER does not monitor

network events that affect the reachability of the adjacency SID or node SID used in

the label stack of the LSP; therefore, the label stack is not updated to reflect changes

in the path except when seamless BFD is used to detect path failures. As a result, it

is recommended that this type of SR-TE LSP be used in the following configurations

In addition, the user can configure an SR-TE LSP with a single loose hop, using the

anycast SID concept to provide LSR node protection within a particular plane of the

network TE topology. This is illustrated in

a plane with the same loopback interface address, which must be different from that

of the system interface and the router ID of the router, and assigns them the same

node SID index value. All routers must use the same SRGB.

Guidelines for Using PCC-initiated and PCC-controlled LSPs

• empty path

• path with a single node SID loose hop

• path of an LSP to a directly connected router (single-hop LSP) with an adjacency

SID or a node SID loose or strict hop

• strict path with hops of adjacencies explicitly configured in the path and

seamless BFD used to monitor the LSP

Use subject to Terms available at: www.nokia.com

12. The user configures all LSRs in

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