95
Step Command Remarks
6. Enter interface view of the
output interface of a primary
CRLSP.
interface
interface-type
interface-number
N/A
7. Specify a bypass tunnel for
the protected interface.
mpls te fast-reroute
bypass-tunnel tunnel
tunnel-number
By default, no bypass tunnel is
specified for an interface.
399BAutomatically setting up bypass tunnels
With auto FRR, if the PLR is the penultimate node of a primary CRLSP, the PLR does not create a
node-protection bypass tunnel for the primary CRLSP.
An automatically created bypass tunnel can protect multiple primary CRLSPs. A bypass tunnel is
unused when the bypass tunnel is not bound to any primary CRLSP. When a bypass tunnel is
unused for the period of time configured by the timers removal unused command, MPLS TE
removes the bypass tunnel.
To configure auto FRR on the PLR:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter MPLS TE view.
mpls te
N/A
3. Enable the auto FRR feature
globally.
auto-tunnel backup
By default, the auto FRR feature is
disabled globally.
4. Specify an interface number
range for the automatically
created bypass tunnels.
tunnel-number min
min-number
max
max-number
By default, no interface number
range is specified, and the PLR
cannot set up a bypass tunnel
automatically.
5. (Optional.) Configure the
PLR to create only
link-protection bypass
tunnels.
nhop-only
By default, the PLR automatically
creates both a link-protection and
a node-protection bypass tunnel
for each of its primary CRLSPs.
Execution of this command
deletes all existing
node-protection bypass tunnels
automatically created for MPLS
TE auto FRR.
6. (Optional.) Set a removal
timer for unused bypass
tunnels.
timers removal unused
seconds
By default, a bypass tunnel is
removed after it is unused for
3600 seconds.
7. (Optional.) Return to system
view.
quit
N/A
8. (Optional.) Enter interface
view.
interface
interface-type
interface-number
N/A
9. (Optional.) Disable the auto
FRR feature on the interface.
mpls te auto-tunnel backup
disable
By default, the auto FRR feature is
enabled on all RSVP-enabled
interfaces after it is enabled
globally.
Execution of this command
deletes all existing bypass tunnels
automatically created on the
interface for MPLS TE auto FRR.
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