Checking The Configuration; Maintaining Bfd - Huawei AR2200-S Series Configuration Manual

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability
Step 2 Run:
bfd
BFD is enabled globally on the local device and the BFD view is displayed.
Step 3 Run:
peer-ip peer-ip mask-length ttl { single-hop | multi-hop } ttl-value
The TTL in BFD control packets is set.
----End

3.11.3 Checking the Configuration

By viewing the global TTL in BFD control packets, you can check whether the configurations
are successful.
Prerequisite
The configurations of the global TTL are completed.
Procedure
l
l
----End
Example
After the configurations are successful, run the display bfd ttl command, and you can view
information about the global TTL.
<Huawei> display bfd ttl
--------------------------------------------------------------------------
Peer IP
---------------------------------------------------------------------------
1.1.1.0
---------------------------------------------------------------------------

3.12 Maintaining BFD

This section describes how to maintain BFD by deleting BFD statistics, and monitoring BFD
operations.
Issue 01 (2012-01-06)
NOTE
l By default, in a static BFD session, the TTL for single-hop BFD packets is 255, and the TTL for multi-
hop BFD packets is 254; in a dynamic BFD session, the TTL for single-hop BFD packets is 255 and
the TTL for multi-hop BFD packets is 253.
l If a TTL is set for packets in a multi-hop BFD session that is in the same segment as a single-hop BFD
session, the single BFD session must be configured with the same IP address, a longer mask than that
for the multi-hop BFD session, and a TTL.
Run the display bfd session { all | discriminator discr-value | dynamic | peer-ip peer-
ip [ vpn-instance vpn-instance-name ] | static } [ verbose ] command to view information
about the BFD session.
Run the display bfd ttl command to view information about the globally configured TTL.
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Mask Type
24 Single-hop
3 BFD Configuration
Value
255
171