Example For Configuring Bfd For Bgp4 - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

9.18.3 Example for Configuring BFD for BGP4+

After BFD for BGP4+ is configured, BFD can fast detect the fault on the link between BGP4+
peers and notify it to BGP4+ so that service traffic can be transmitted through the backup link.
Networking Requirements
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Figure 9-3 Networking diagram of configuring BFD for BGP4+
Configuration Roadmap
The configuration roadmap is as follows:
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2.
3.
Issue 02 (2014-09-30)
ipv6-family unicast
undo synchronization
network 2001:db8:102:: 96
peer 2001:db8:102::1 enable
#
Return
As shown in Figure 9-3, Router A belongs to AS 100, Router B to AS 200, and Router C
to AS 200. Establish an EBGP connection between Router A and Router B and that between
Router A and Router C.
Traffic is transmitted on the active link Router A → Router B. The link Router A → Router
C → Router B acts as the standby link.
Use BFD to detect the BGP session between Router A and Router B. When the link between
Router A and Router B fails, BFD can rapidly detect the failure and notify BGP of the
failure. Traffic is transmitted on the standby link.
GE1/0/0
AS 100
2001:db8:8::1/64
RouterA
GE2/0/0
2001:db8:10::1/64
Configure the basic BGP4+ functions on each router.
Configure MED attributes to control the routing selection of the routers.
Enable the BFD on Router A and Router B.
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GE2/0/0
2001:db8:8::2/64
EBGP
RouterB
EBGP
GE2/0/0
2001:db8:10::2/64
9 BGP4+ Configuration
GE3/0/0
2001:db8:7::1/64
GE1/0/0
2001:db8:9::1:1/64
IBGP
AS 200
GE1/0/0
2001:db8:9::1:2/64
RouterC
1132