MPLS and RSVP
7450 ESS MPLS Guide Page 139
A user can define a penalty weight value associate with an SRLG group using the penalty-weight
parameter of the srlg-group command under the configure>router-if-attribute context. If an
SRLG penalty weight is configured, then CSPF will include the SRLG penalty weight in the
computation of an FRR detour or bypass for protecting the primary LSP path at a PLR node. Links
with a higher SRLG penalty should be more likely to be pruned than links with a lower SRLG
penalty.
Note that the configured penalty weight is not advertised in the IGP.
An SRLG penalty weight is applicable whenever an SRLG group is applied to an interface,
including in the static SRLG database. However, penalty weights are used in bypass and detour
path computation only when the srlg-frr (loose) flag is enabled.
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