Srlg Penalty Weights For Detour And Bypass Lsps; Figure 30: Shared Risk Link Groups - Alcatel-Lucent 7450 Manual

SRLG 1
SRLG 2
Primary Path (FRR, node protection)
Bypass tunnel taking SRLG into account
Secondary path taking SRLG into account
This feature is supported on OSPF and IS-IS interfaces on which RSVP is enabled.

SRLG Penalty Weights for Detour and Bypass LSPs

The likelihood of paths with links sharing SRLG values with a primary path being used by a
bypass or detour LSP can be configured if a penalty weight is specified for the link. The higher the
penalty weight, the less desirable it is to use the link with a given SRLG.
Figure 31
7450 ESS MPLS Guide

Figure 30: Shared Risk Link Groups

illustrates the operation of SRLG penalty weights.
MPLS and RSVP
Page 137