MPLS and RSVP
7210 SAS M, T, X, R6, Mxp MPLS Configuration Guide Page 125
srlg-group
Syntax [no] srlg-group group-name [group-name...(up to 5 max)]
Context config>router>mpls>interface
Description This command defines the association of RSVP interface to an SRLG group. An interface can belong
to up to 64 SRLG groups. However, each single operation of the srlg-group command allows a
maximum of 5 groups to be specified at a time.
The no form of this command deletes the association of the interface to the SRLG group.
Default none
Parameters group-name — Specifies the name of the SRLG group within a virtual router instance up to 32
characters.
te-metric
Syntax te-metric value
no te-metric
Context config>router>mpls>interface
Description This command configures the traffic engineering metric used on the interface. This metric is in
addition to the interface metric used by IGP for the shortest path computation.
This metric is flooded as part of the TE parameters for the interface using an opaque LSA or an LSP.
The IS-IS TE metric is encoded as sub-TLV 18 as part of the extended IS reachability TLV. The
metric value is encoded as a 24-bit unsigned integer. The OSPF TE metric is encoded as a sub-TLV
Type 5 in the Link TLV. The metric value is encoded as a 32-bit unsigned integer.
When the use of the TE metric is enabled for an LSP, CSPF will first prune all links in the network
topology which do not meet the constraints specified for the LSP path. Such constraints include
bandwidth, admin-groups, and hop limit. Then, CSPF will run an SPF on the remaining links. The
shortest path among the all SPF paths will be selected based on the TE metric instead of the IGP
metric which is used by default.
The TE metric in CSPF LSP path computation can be configured by entering the command
config>router>mpls>lsp>cspf>use-te-metric.
Note that the TE metric is only used in CSPF computations for MPLS paths and not in the regular
SPF computation for IP reachability.
The no form of the command reverts to the default value.
Default no te-metric
The value of the IGP metric is advertised in the TE metric sub-TLV by IS-IS and OSPF.
Parameters value — Specifies the metric value.
Values 1 — 16777215
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