R3303-HP HSR6800 Routers MPLS Command Reference

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Use undo periodic-tracert to disable periodic LSP tracert for an FEC.
Syntax
periodic-tracert destination-address mask-length [ -a source-ip | -exp exp-value | -h ttl-value | -m
wait-time | -t time-out | -u retry-attempt ] *
undo periodic-tracert destination-address mask-length
Default
The periodic LSP tracert for an FEC is not enabled.
Views
MPLS LSPV view
Default command level
2: System level
Parameters
destination-address mask-length: Specifies an FEC by a destination IP address and the mask length of the
destination address. The value range for the mask length is 0 to 32.
-a source-ip: Specifies the source IP address for MPLS echo request messages. By default, the MPLS LSR
ID is used as the source address of MPLS echo request messages.
-exp exp-value: Specifies the EXP value of the label. The value range for the exp-value argument is 0 to
7, and the default is 0.
-h ttl-value: Specifies the maximum TTL value for MPLS echo request messages. The value range for the
ttl-number argument is to 255, and the default is 30.
-m wait-time: Specifies the interval for performing LSP tracert. The value range for the wait-time argument
is 15 to 120 minutes, and the default is 60 minutes.
-t time-out: Specifies the timeout time for waiting for the response of an MPLS echo request message. The
value range for the time-out argument is 0 to 65535 milliseconds, and the default is 2000 milliseconds.
-u retry-attempt: Specifies the maximum number of times that MPLS echo request messages can be sent
if no response is received. The value range for the retry-attempt argument is 1 to 9, and the default is 3.
Usage guidelines
The periodic LSP tracert function is for locating faults of an LSP periodically. It detects the consistency of
the forwarding plane and control plane and records detection results into logs. You can know whether
an LSP has failed by checking the logs.
If you configure BFD as well as periodic tracert for an LSP, once the periodic LSP tracert function detects
an LSP fault or inconsistency of the forwarding plane and control plane, the BFD session for the LSP will
be deleted, and a new BFD session will be established according to the control plane.
Examples
# Enable periodic tracert for LSPs to destination 1.1.1.9/32.
<Sysname> system-view
[Sysname] mpls lspv
[Sysname-mpls-lspv] periodic-tracert 1.1.1.9 32