双向转发检测BFD(Bidirectional Forwarding Detection)是一种全网统一的检测机制,用于快速检测、
监控网络中链路或者IP路由的转发连通状况。此处列举了BFD与静态路由联动配置,以及BFD与ospf联动配置。

实验拓扑图

华为BFD可靠性配置

一、BFD与静态路由联动配置

(1)ip地址的配置

R1:
sys
sysn R1
inter g0/0/1
ip address 10.0.13.1 24
inter g0/0/0
ip address 10.0.12.1 24
quit

R2:
sys
sysn R2
inter g0/0/0
ip address 10.0.13.13 24
quit

R3:
sys
sysn R3
inter g0/0/0
ip address 10.0.12.12 24
quit

(2)在R2和R3上配置静态路由实现通信

R2:
ip route-static 10.0.12.0  24  10.0.13.1   

R3:
ip route-static 10.0.13.0  24  10.0.12.1

(3)在R1和R2路径上启用BFD配置,检测R1到R2接口

R1:
[R1]bfd     //启用BFD配置
[R1-bfd]quit
[R1]bfd 1 bind peer-ip 10.0.13.13 source-ip 10.0.13.1 auto  //创建BFD会话绑定信息,
并进入BFD会话视图。
[R1-bfd-session-1]commit  //提交BFD会话配置
[R1-bfd-session-1]quit

R2:
[R2]bfd
[R2-bfd]quit
[R2]bfd 1 bind peer-ip 10.0.13.1 source-ip 10.0.13.13 auto 
[R2-bfd-session-1]commit
[R2-bfd-session-1]quit

(4)检查BFD会话信息

[R1]display bfd session all

华为BFD可靠性配置

(5)在R1上配置静态路由并联动BFD:

[R1]  ip route-static 0.0.0.0 0.0.0.0 10.0.13.13 track bfd-session 1'

此时,静态路由与BFD的联动已配置完成,bfd可以快速检测、监控网络中链路或者IP路由的转发连通状况。

二、BFD与OSPF联动配置

(1)删除静态路由、bfd

R1:
undo ip route-static 0.0.0.0 0.0.0.0 10.0.13.13
undo ip route-static 0.0.0.0 0.0.0.0 10.0.12.12
undo bfd 1 

R2:
undo ip route-static 10.0.12.0 255.255.255.0 10.0.13.1
undo bfd 1 

R3:
undo ip route-static 10.0.13.0 255.255.255.0 10.0.12.1
undo bfd 1 

(2)配置ospf协议实现路由通信

R1: 

ospf 1 
area 0.0.0.0 
network 10.0.12.0 0.0.0.255 
network 10.0.13.0 0.0.0.255
return

R2:
sys
ospf 1 
area 0.0.0.0 
network 10.0.13.0 0.0.0.255 
return

R3:
sys
ospf 1 
area 0.0.0.0 
network 10.0.12.0 0.0.0.255 
area 0.0.0.1 
return

(3)配置bfd与ospf联动
配置 BFD session需要在系统全局下开启BFD,并且在OSPF视图下启用联动BFD。

R1:
sys
bfd                               // 启用bfd
quit
ospf 1
bfd all-interfaces enable    //在osp视图下启用联动bfd
return

R2:
sys
bfd
quit
ospf 1
bfd all-interfaces enable 
return

(4)
dis bfd session all 查看bfd会话
华为BFD可靠性配置