R3303-HP HSR6800 Routers MPLS Command Reference

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Default command level
2: System level
Parameters
-a source-ip: Specifies the source IP address of 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 1 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 for an MPLS TE tunnel is for locating faults of the MPLS TE tunnel
periodically. It detects the consistency of the forwarding and control plane and records detection results
into logs. You can know whether an MPLS TE tunnel has failed by checking the logs.
If you configure BFD as well as periodical tracert for an MPLS TE tunnel, once the tracert function detects
a data plane failure or an inconsistency between the data plane and control plane, the existing BFD
session is deleted and a new BFD session is then reestablished based on the control plane.
Enable LSP verification by using the mpls lspv command before executing the mpls te periodic-tracert
command.
Examples
# Enable periodic LSP tracert for the MPLS TE tunnels on tunnel interface Tunnel 0.
<Sysname> system-view
[Sysname] interface tunnel 0
[Sysname-Tunnel0] mpls te periodic-tracert
mpls te priority
Use mpls te priority to assign a setup priority and holding priority to the MPLS TE tunnel.
Use undo mpls te priority to restore the default.
Syntax
mpls te priority setup-priority [ hold-priority ]
undo mpls te priority
Default
Both setup and holding priorities of TE tunnels are 7.
Views
Tunnel interface view