Using Ping to Monitor PW Connectivity on a VPLS Network

Procedure

1. To locate the faulty node on the VPLS network, run either of the following commands as required:
   • In BGP mode, run:

     ping vpls [ -c echo-number | -m time-value | -s data-bytes | -t timeout-value | -exp exp-value | -r reply-mode | -v | -g ] * vsi vsi-name local-site-id remote-site-id [ bypass -si interface-type interface-number ]

   • In LDP mode, run:

     ping vpls [ -c echo-number | -m time-value | -s data-bytes | -t timeout-value | -exp exp-value | -r reply-mode | -v | -g ] * vsi vsi-name peer peer-address [ negotiate-vc-id vc-id ] [ control-word [ remote remote-address remote-pw-id [ sender sender-address ] ] ] [ bypass -si interface-type interface-number ]

   The ping vpls command output contains the following information:

   • Response to each ping VPLS packet. If no response packet is received after the corresponding timer expires, the message reading "Request time out" is displayed. If a response packet is received, the number of data bytes, packet sequence number, TTL, and response time are displayed.

   • Final statistics: include the number of sent packets, number of received packets, percentage of sent packets with failed responses, and minimum, maximum, and average response times.

   For example:

   <HUAWEI> ping vpls vsi a2 peer 10.1.1.1
       PW PING : FEC 128 PSEUDOWIRE (NEW). Type = vlan, ID = 2 : 100 data bytes, press CTRL_C to break
       Reply from 10.1.1.1: bytes=100 Sequence=1 time=60 ms
       Reply from 10.1.1.1: bytes=100 Sequence=2 time=50 ms
       Reply from 10.1.1.1: bytes=100 Sequence=3 time=60 ms
       Reply from 10.1.1.1: bytes=100 Sequence=4 time=60 ms
       Reply from 10.1.1.1: bytes=100 Sequence=5 time=60 ms
   
     --- FEC: FEC 128 PSEUDOWIRE (NEW). Type = vlan, ID = 2 ping statistics ---
       5 packet(s) transmitted
       5 packet(s) received
       0.00% packet loss
       round-trip min/avg/max = 50/58/60 ms