MPLS Commands
Page 138 7210 SAS M, T, X, R6, Mxp MPLS Configuration
Guide
If an LSP is configured with fast-reroute frr-method specified but does not enable CSPF, then
neither global revertive nor local revertive will be available for the LSP to recover.
The no form of the fast-reroute command removes the detour LSP from each node on the primary
path. This command will also remove configuration information about the hop-limit and the
bandwidth for the detour routes.
The no form of fast-reroute hop-limit command reverts to the default value.
Default no fast-reroute — When fast-reroute is specified, the default fast-reroute method is one-to-one.
Parameters Values one-to-one — In the one-to-one technique, a label switched path is established
which intersects the original LSP somewhere downstream of the point of link or
node failure. For each LSP which is backed up, a separate backup LSP is
established.
bandwidth
Syntax bandwidth rate-in-mbps
no bandwidth
Context config>router>mpls>lsp>fast-reroute
Description This command is used to request reserved bandwidth on the detour path. When configuring an LSP,
specify the traffic rate associated with the LSP.
When configuring fast reroute, allocate bandwidth for the rerouted path. The bandwidth rate does not
need to be the same as the bandwidth allocated for the LSP.
Default no bandwidth — Bandwidth is not reserved for a rerouted path.
Parameters rate-in-mbps — Specifies the amount of bandwidth in Mbps to be reserved for the LSP path.
hop-limit
Syntax hop-limit limit
no hop-limit
Context config>router>mpls>lsp>fast-reroute
Description For fast reroute, how many more routers a detour is allowed to traverse compared to the LSP itself.
For example, if an LSP traverses four routers, any detour for the LSP can be no more than ten router
hops, including the ingress and egress routers.
Default 16
Parameters limit — Specify the maximum number of hops.
Values 0 — 255
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