浮動靜態路由和BFD聯動實現路由自動更新

浮動靜態路由和BFD聯動實現路由自動更新

實驗目的：
通過鏈接做出兩條鏈路，一條作爲主鏈路，一條作爲輔鏈路。主鏈路正常工作時，輔鏈路不發揮作用，主鏈路出現故障時，輔鏈路作爲主鏈路工作。

實驗top圖

實驗配置
R4的路由配置

[R4]ip route-static 192.168.2.0 24 192.168.4.2 preference 60  備份鏈路的靜態路由優先級要配置高點（數字小優先級高）
[R4]ip route-static 192.168.3.0 24 192.168.5.2 preference 80  
[R4]ip route-static 192.168.1.0 24 192.168.4.2
[R4]ip route-static 192.168.1.0 24 192.168.5.2
[R4]bfd 
[R4-bfd]q
[R4]bfd rui bind peer-ip 192.168.2.2
[R4-bfd-session-rui]discriminator local 2
[R4-bfd-session-rui]discriminator remote 1
[R4-bfd-session-rui]commit 
[R4-bfd-session-rui]inter e0/0/1
[R4-Ethernet0/0/1]standby track bfd-session session-name rui   配置接口備份與BFD聯動

R3的路由配置

[R3]ip route-static 192.168.6.0 24 192.168.5.3
[R3]ip route-static 192.168.1.0 24 192.168.3.2

R2的路由配置

[R2]ip route-static 192.168.1.0 24 192.168.2.2
[R2]ip route-static 192.168.6.0 24 192.168.4.3

R1的路由配置

[R1]ip route-static 192.168.4.0 24 192.168.2.3 preference 80
[R1]ip route-static 192.168.5.0 24 192.168.3.4
[R1]ip route-static 192.168.6.0 24 192.168.3.4
[R1]ip route-static 192.168.6.0 24 192.168.2.3 preference 60 
[R1]bfd 
[R1-bfd]qui
[R1]bfd cai bind peer-ip 192.168.4.0
[R1-bfd-session-cai]discriminator local 1
[R1-bfd-session-cai]discriminator remote 2
[R1-bfd-session-cai]commit 
[R1]inter e0/0/1
[R1-Ethernet0/0/1]standby track bfd-session session-name cai

實驗結果驗證：正常情況主鏈路爲上面一條，可正常連通，當拔開上面鏈路的接口時，過段時間，也可正常連通。