MPLS Commands
Page 118 7210 SAS M, T, X, R6, Mxp MPLS Configuration
Guide
The IGP communicates the information throughout the area using the TE link state advertisement.
CSPF uses the information when paths are computed for constraint-based LSPs. CSPF must be
enabled in order for SRLG groups to be relevant.
Up to 1024 group names can be defined in the config>router>mpls context. The SRLG group names
must be identical across all routers in a single domain.
The no form of this command deletes the SRLG group.
Default none
Parameters group-name — Specifies the name of up to 32 characters of the SRLG group within a virtual router
instance.
value group-value — Specifies the group value associated with this SRLG group. This value is
unique within a virtual router instance.
Values 0 — 4294967295
user-srlg-db
Syntax user-srlg-db [enable | disable]
Context config>router>mpls
Description This command enables the use of CSPF by the user SRLG database. When the MPLS module makes
a request to CSPF for the computation of an SRLG secondary path, CSPF will query the local SRLG
and compute a path after pruning links that are members of the SRLG IDs of the associated primary
path. When MPLS makes a request to CSPF for an FRR bypass or detour path to associate with the
primary path, CSPF queries the user SRLG database and computes a path after pruning links that are
members of the SRLG IDs of the PLR outgoing interface.
If an interface was not entered into the user SRLG database, it is assumed that it does not have any
SRLG membership. CSPF will not query the TE database for IGP advertised interface SRLG
information.
The disable keyword disables the use of the user SRLG database. CSPF will then resume queries into
the TE database for SRLG membership information. The user SRLG database is maintained.
Default user-srlg-db disable
srlg-database
Syntax [no] srlg-database
Context config>router>mpls
Description This command provides the context for the user to enter manually the link members of SRLG groups
for the entire network at any node that needs to signal LSP paths (for example, a head-end node).
The no form of the command deletes the entire SRLG database. CSPF will assume all interfaces have
no SRLG membership association if the database was not disabled with the command
config>router>mpls>user-srlg-db disable.
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