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Connect interfaces correctly.
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Configure the IP address of each Layer 3 interface correctly.
Data Preparation
To configure the TTL globally, you need the following data.
No.
Data
1
Name and number of each interface
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.
NOTE
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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.
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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.
----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.
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
5 BFD Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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