Huawei Quidway NetEngine80E Configuration Manual page 880

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Usage Scenario
As technologies develop, voice and video services are widely applied. These services are
sensitive to the packet loss and delay. BGP periodically sends Keepalive packets to its peers to
detect the status of its peers. The detection mechanism, however, takes more than one second.
When the data transmission rate reaches the level of Gbit/s, such slow detection will cause a
large amount of data to be lost. As a result, the requirement for high reliability of carrier-class
networks cannot be met.
BFD for BGP can be used to reduce packet loss and delay. BFD for BGP detects faults on links
between BGP peers within 50 milliseconds. The fast detection speed ensures fast BGP route
convergence and minimizes traffic loss.
Pre-configuration Tasks
Before configuring BFD for BGP,
Data Preparation
To configure BFD for BGP, you need the following data.
No.
1
2
3
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
bfd
BFD is enabled globally.
Step 3 Run:
quit
Return to the system view.
Step 4 Run:
bgp { as-number-plain | as-number-dot }
The BGP view is displayed.
Step 5 (Optional) Run:
Issue 02 (2014-09-30)
Data
IP address of the BGP peer or name of the peer group for which BFD needs to be
configured
BFD parameters, including the minimum and maximum intervals for receiving BFD
packets, Wait-to-Restore (WTR) time of a BFD session, and the detection multiplier
Name of the VPN instance for which BFD needs to be configured
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configure basic BGP functions.
8 BGP Configuration
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