Configuring The Delay Of A Bfd Session To Go Up; Establishing The Configuration Task - Huawei AR2200-S Series Configuration Manual

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability
Actual Tx Interval (ms): 1000
Local Detect Multi
Echo Passive
Destination Port
Proc Interface Status
WTR Interval (ms)
Active Multi
Last Local Diagnostic
Bind Application
Session TX TmrID
Session Init TmrID
Session Echo Tx TmrID
PDT Index
Session Description
--------------------------------------------------------------------------------

3.5 Configuring the Delay of a BFD Session to Go Up

In certain scenarios a BFD session is configured to go Up after a delay. Setting a delay for a
BFD session status change to Up can prevent traffic loss that occurs if an interface goes Up
before the routing protocol.

3.5.1 Establishing the Configuration Task

Before configuring a delay for a BFD session status change to Up, familiarize yourself with the
applicable environment, complete the pre-configuration tasks, and obtain the data required for
the configuration.
Applicable Environment
If BFD is Up on a network, the interface bound to BFD goes Up and traffic can be switched
back to the interface. If the interface goes Up before the status of the routing protocol changes,
no route is available for forwarding and switching back traffic. As a result, traffic is dropped.
The time when the routing protocol goes Up and the time when the interface goes Up must be
synchronous.
Pre-configuration Tasks
Before configuring the delay of BFD session status change to Up, ensure that the router runs
properly.
Data Preparation
To complete the configuration, you need the following data.
No.
1
Issue 01 (2012-01-06)
: 3
: Disable
: 3784
: Disable
: -
: 3
: No Diagnostic
: AUTO
: -
: -
: -
: FSM-3 | RCV-0 | IF-0 | TOKEN-0
: -
Total UP/DOWN Session Number : 1/0
Data
Delay time
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Actual Rx Interval (ms): 1000
Detect Interval (ms)
Acl Number
TTL
Session Detect TmrID
Session WTR TmrID
3 BFD Configuration
: 3000
: -
: 255
: -
: -
152