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Manually configuring a bypass tunnel
The bypass tunnel setup method is the same as a normal MPLS TE tunnel. This section describes
only FRR-related configurations.
To configure a bypass tunnel on the PLR:
Step
1.
Enter system view.
2.
Enter tunnel interface view of
the bypass tunnel.
3.
Specify the destination
address of the bypass
tunnel.
4.
Configure the bandwidth and
the CT to be protected by the
bypass tunnel.
5.
Return to system view.
6.
Enter interface view of the
egress interface of a primary
CRLSP.
7.
Specify a bypass tunnel for
the protected interface (the
current interface).
Automatically 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
1.
Enter system view.
2.
Enter MPLS TE view.
3.
Enable the auto FRR
function globally.
4.
Specify an interface number
range for the automatically
created bypass tunnels.
Command
system-view
interface tunnel tunnel-number
[ mode mpls-te ]
destination ip-address
mpls te backup bandwidth [ ct0
| ct1 | ct2 | ct3 ] { bandwidth |
un-limited }
quit
interface interface-type
interface-number
mpls te fast-reroute
bypass-tunnel tunnel
tunnel-number
Command
system-view
mpls te
auto-tunnel backup
tunnel-number min min-number
max max-number
103
Remarks
N/A
N/A
The bypass tunnel destination
address is the LSR ID of the MP.
By default, the bandwidth and the
CT to be protected by the bypass
tunnel are not specified.
N/A
N/A
By default, no bypass tunnel is
specified for an interface.
Remarks
N/A
N/A
By default, the auto FRR function
is disabled globally.
By default, no interface number
range is specified, and the PLR
cannot set up a bypass tunnel
automatically.
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