Configuring The Ttl Globally; Checking The Configurations - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
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Data Preparation
To configure the TTL globally, you need the following data.
No.
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5.13.2 Configuring the TTL Globally

Context
Perform the following steps on each device:
Procedure
Step 1 Run:
system-view
The system view is displayed.
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

5.13.3 Checking the Configurations

By viewing the global TTL in BFD control packets, you can check whether the configurations
are successful.
Prerequisites
The configurations of the global TTL are completed.
Issue 02 (2014-09-30)
Connect interfaces correctly.
Configure the IP address of each Layer 3 interface correctly.
Data
Name and number of each interface
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.
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