雙向轉發檢測BFD(Bidirectional Forwarding Detection)是一種全網統一的檢測機制,用於快速檢測、
監控網絡中鏈路或者IP路由的轉發連通情況。此處列舉了BFD與靜態路由聯動配置,以及BFD與ospf聯動配置。網絡
(1)ip地址的配置session
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上配置靜態路由實現通訊ide
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路徑上啓用BFD配置,檢測R1到R2接口ui
R1: [R1]bfd //啓用BFD配置 [R1-bfd]quit [R1]bfd 1 bind peer-ip 10.0.13.13 source-ip 10.0.13.1 auto //建立BFD會話綁定信息, 並進入BFD會話視圖。 [R1-bfd-session-1]commit //提交BFD會話配置 [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)檢查BFD會話信息code
[R1]display bfd session all
(5)在R1上配置靜態路由並聯動BFD:blog
[R1] ip route-static 0.0.0.0 0.0.0.0 10.0.13.13 track bfd-session 1'
此時,靜態路由與BFD的聯動已配置完成,bfd能夠快速檢測、監控網絡中鏈路或者IP路由的轉發連通情況。接口
(1)刪除靜態路由、bfdip
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協議實現路由通訊路由
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與ospf聯動
配置 BFD session須要在系統全局下開啓BFD,而且在OSPF視圖下啓用聯動BFD。it
R1: sys bfd // 啓用bfd quit ospf 1 bfd all-interfaces enable //在osp視圖下啓用聯動bfd return R2: sys bfd quit ospf 1 bfd all-interfaces enable return
(4)
dis bfd session all 查看bfd會話