Configuring Mpls Oam For A Pw - HP FlexNetwork HSR6600 Configuration Manual

Step
4. Configure BFD to verify
MPLS TE tunnel
connectivity.

Configuring MPLS OAM for a PW

Virtual Circuit Connectivity Verification (VCCV) is an L2VPN PW OAM feature to verify PW
connectivity in data plane. VCCV can be implemented in the following modes:
•
On-demand mode—Execute the ping mpls pw command to trigger PW connectivity
detection.
•
Proactive mode—Configure BFD or raw-BFD for a PW to test PW connectivity.
The packets used to verify PW connectivity are collectively referred to as VCCV packets. A PE
transfers VCCV packets through a control channel (CC).
CCs include the following types:
•
Control word—Identifies VCCV packets through the control word (PW-ACH, PW Associated
Channel Header). You can use this CC type only when the PW supports control word. For more
information about control word, see "Configuring MPLS L2VPN."
•
MPLS router alert label—Identifies a VCCV packet by adding an MPLS router alert label
before the PW label.
•
TTL expiry—Identifies a VCCV packet by setting the TTL value of the PW label to 1.
Connectivity Verification (CV) tools include the following types:
•
MPLS ping—Uses MPLS ping to verify PW connectivity.
•
BFD—Uses BFD to verify PW connectivity. BFD packets use IP/UDP encapsulation (with
IP/UDP headers).
•
Raw-BFD—Uses BFD to verify PW connectivity. BFD packets use PW-ACH encapsulation
(without IP/UDP headers). Raw-BFD takes effect only when the CC type is control-word.
Configuring MPLS ping for a PW
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.
Configuring BFD for a PW
Follow these steps to configure BFD for a PW:
1. Enable BFD for MPLS.
2. Create a PW class, and configure BFD for PW connectivity verification in PW class view.
Command
mpls bfd [ discriminator local
local-id remote remote-id ]
[ template template-name ]
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
501
Remarks
By default, BFD is not configured
to verify MPLS TE tunnel
connectivity.