Configuring Single-Hop Bfd - Huawei Quidway S6700 series Configuration Manual

Quidway S6700 Series Ethernet Switches
Configuration Guide - Reliability
The BFD session dynamically triggered by a routing protocol is implemented as follows:
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When the neighbor relationship of a routing protocol is set up successfully, the routing protocol
requests BFD to establish a BFD session through the RM module. The neighbor relationship of
the routing protocol then can be rapidly detected. The detection parameters of the BFD session
are negotiated by both ends through the routing protocol.
When a BFD session detects a fault, the BFD session becomes Down. BFD triggers route
convergence through the RM module.
When the neighbor is unreachable, the routing protocol requests BFD to delete the session
through the RM module.
Dynamically Changing Values of BFD Parameters
After a BFD session is set up, you can change the values of related parameters, such as the
expected interval for sending BFD packets, the minimum interval for receiving BFD packets,
and local detection multiplier, without affecting the status of the session.

5.3 Configuring Single-hop BFD

A single-hop BFD session rapidly detects faults in direct links over a network.
5.3.1 Establishing the Configuration Task
Before configuring a single-hop BFD session, familiarize yourself with the applicable
environment, complete the pre-configuration tasks, and obtain the required data. This can help
you complete the configuration task quickly and accurately.
Applicable Environment
To fast check directly-connected links, configure single-hop BFD.
Pre-configuration Tasks
Before configuring single-hop BFD, complete the following tasks:
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Data Preparation
To configure single-hop BFD, you need the following data.
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Issue 01 (2011-07-15)
The local discriminator is allocated automatically.
The remote discriminator is learned by the local end.
Connecting each interface correctly
Configuring IP addresses for Layer 3 interfaces
Data
BFD configuration name
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