connectivity detection. The packets used to verify PW connectivity are collectively referred to as
VCCV packets. A PE transfers VCCV packets through an MPLS router alert label type control
channel (CC) to test PW connectivity. The MPLS router alert label type CC identifies a VCCV
packet by adding an MPLS router alert label before the PW label.
Before you configure MPLS ping for a PW, perform the following tasks:
1.
Create a PW class, and use the vccv cc command to configure the VCCV CC type in PW class
view.
2.
Create the PW, and use the PW class created in the previous step for the PW.
Perform the following task in any view:
Task
Use MPLS ping to verify the
connectivity of a PW.
Command
ping mpls [ -a source-ip | -c count | -exp exp-value | -h ttl-value | -m
wait-time | -r reply-mode | -rtos tos-value | -s packet-size | -t time-out |
-v ] * pw ip-address pw-id pw-id
420