IP Router Configuration Command Reference
204 Router Configuration Guide
The pref option is used to provide a relative preference for the admin group to select. A lower
preference value means that LFA SPF will first attempt to select an LFA backup next-hop that is a
member of the corresponding admin group. If none is found, then the admin group with the next
highest preference value is evaluated. If no preference is configured for a given admin group name,
then it is supposed to be the least preferred (i.e., numerically the highest preference value).
When evaluating multiple include-group statements within the same preference, any link that belongs
to one or more of the included admin groups can be selected as an LFA next-hop. There is no relative
preference based on how many of those included admin groups the link is a member of.
The exclude-group statement simply prunes all links belonging to the specified admin group before
making the LFA backup next-hop selection for a prefix.
If the same group name is part of both include and exclude statements, the exclude statement will win.
It other words, the exclude statement can be viewed as having an implicit preference value of zero (0).
The admin-group criteria are applied before running the LFA next-hop selection algorithm.
The no form deletes the admin group constraint from the route next-hop policy template.
Parameters group-name — Specifies the name of the group, up to 32 characters.
srlg-enable
Syntax [no] srlg-enable
Context config>router>route-next-hop-policy>template
Description This command configures the SRLG constraint into the route next-hop policy template.
When this command is applied to a prefix, the LFA SPF will attempt to select an LFA next-hop, among
the computed ones, which uses an outgoing interface that does not participate in any of the SLRGs of
the outgoing interface used by the primary next-hop.
The SRLG criterion is applied before running the LFA next-hop selection algorithm.
The no form deletes the SRLG constraint from the route next-hop policy template.
protection-type
Syntax protection-type {link | node}
no protection-type
Context config>router>route-next-hop-policy>template
Description This command configures the protection type constraint into the route next-hop policy template.
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