R0106-HP MSR Router Series MPLS Command Reference(V7)

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• The ingress node attempts to set up a new CRLSP.
After the new CRLSP is set up successfully, traffic is forwarded on the new CRLSP.
When a primary CRLSP does not need bandwidth protection, it prefers to use a bypass tunnel that does
not provide bandwidth protection. No bandwidth guarantee is required after FRR.
When a primary CRLSP needs bandwidth protection, it prefers to use the bypass tunnel that can protect
bandwidth as much as possible to provide bandwidth guarantee after FRR.
Regardless of whether or not a primary CRLSP requires bandwidth protection, the following will occur
when the primary CRLSP is bound to a bypass tunnel that provides bandwidth protection:
• The bypass tunnel will reserve the protected bandwidth for the primary CRLSP.
• The RRO message of the PLR will carry the bandwidth protection flag.
After FRR is enabled for a tunnel, the label recording function is automatically enabled for the tunnel,
regardless of whether the mpls te record-route label command is configured.
In the same tunnel interface view, FRR cannot be used together with the mpls te resv-style ff command.
Examples
# Enable FRR for interface Tunnel 0.
<Sysname> system-view
[Sysname] interface tunnel 0 mode mpls-te
[Sysname-Tunnel0] mpls te fast-reroute
Related commands
• display mpls te tunnel-interface
• mpls te backup bandwidth
mpls te fast-reroute bypass-tunnel
Use mpls te fast-reroute bypass-tunnel to specify a bypass tunnel for an interface.
Use undo mpls te fast-reroute bypass-tunnel to delete the specified bypass tunnel.
Syntax
mpls te fast-reroute bypass-tunnel tunnel tunnel-number
undo mpls te fast-reroute bypass-tunnel tunnel tunnel-number
Default
No bypass tunnel is specified for an interface.
Views
Interface view
Predefined user roles
network-admin
Parameters
tunnel tunnel-number: Specifies a bypass tunnel by the tunnel interface number. The following matrix
shows the value ranges for the tunnel-number argument: