
雙向轉(zhuǎn)發(fā)檢測BFD是一種用于檢測鄰居路由之間鏈路故障的檢測機制,他通常與路由協(xié)議聯(lián)動,通過快速感知鏈路故障并通告使得路由協(xié)議能夠快速的重新收斂,從而減少由于拓撲變化導致的流量丟失。
查看鄰居建立關(guān)系
[R1]disrip1neighbor
---------------------------------------------------------------------
IPAddressInterfaceTypeLast-Heard-Time
---------------------------------------------------------------------
192.168.1.1GigabitEthernet0/0/1RIP015
NumberofRIProutes:2
192.168.2.1GigabitEthernet0/0/2RIP013
NumberofRIProutes:1
查看路由表,發(fā)現(xiàn)去往172.16.1.0/24下一跳是 192.168.1.1 接口是g0/0/1
[R1]disiprouting-table
RouteFlags:R-relay,D-downloadtofib
------------------------------------------------------------------------------
RoutingTables:Public
Destinations:12Routes:13
Destination/MaskProtoPreCostFlagsNextHopInterface
127.0.0.0/8Direct00D127.0.0.1InLoopBack0
127.0.0.1/32Direct00D127.0.0.1InLoopBack0
127.255.255.255/32Direct00D127.0.0.1InLoopBack0
172.16.1.0/24RIP1001D192.168.1.1GigabitEthernet0/0/1
192.168.1.0/24Direct00D192.168.1.2GigabitEthernet0/0/1
192.168.1.2/32Direct00D127.0.0.1GigabitEthernet0/0/1
192.168.1.255/32Direct00D127.0.0.1GigabitEthernet0/0/1
192.168.2.0/24Direct00D192.168.2.2GigabitEthernet0/0/2
192.168.2.2/32Direct00D127.0.0.1GigabitEthernet0/0/2
192.168.2.255/32Direct00D127.0.0.1GigabitEthernet0/0/2
192.168.3.0/24RIP1001D192.168.2.1GigabitEthernet0/0/2
RIP1001D192.168.1.1GigabitEthernet0/0/1
255.255.255.255/32Direct00D127.0.0.1InLoopBack0
R1啟用BFD
[R1]bfd
[R1-bfd]quit
[R1]rip1
[R1-rip-1]bfdall
[R1-rip-1]bfdall-interfacesenable
[R1-rip-1]bfdall-interfacesmin-rx-interval100min-tx-interval100detect-multiplier10
[R1-rip-1]quit
R2啟用BFD
[R2]bfd
[R2-bfd]quit
[R2]rip1
[R2-rip-1]bfdall
[R2-rip-1]bfdall-interfacesenable
[R2-rip-1]bfdall-interfacesmin-rx-interval100min-tx-interval100detect-multiplier10
[R2-rip-1]quit
查看BFD,發(fā)現(xiàn)R1與R2已經(jīng)建立成功
[R1]disrip1bfdsessionall
LocalIp:192.168.1.2RemoteIp:192.168.1.1BFDState:Up
TX:100RX:100Multiplier:10
BFDLocalDis:8192Interface:GigabitEthernet0/0/1
DiagnosticInfo:Nodiagnosticinformation
LocalIp:192.168.2.2RemoteIp:192.168.2.1BFDState:Down
TX:13999RX:13999Multiplier:0
BFDLocalDis:8193Interface:GigabitEthernet0/0/2
DiagnosticInfo:Nodiagnosticinformation
手動關(guān)閉R2上面連接R1的接口,再次查看bfd發(fā)現(xiàn)不存在了
[R1]disrip1bfdsessionall
LocalIp:192.168.2.2RemoteIp:192.168.2.1BFDState:Down
TX:13999RX:13999Multiplier:0
BFDLocalDis:8193Interface:GigabitEthernet0/0/2
DiagnosticInfo:Nodiagnosticinformation
再次查看路由表,發(fā)現(xiàn)去往172.16.1.0/24的下一跳更改了
[R1]disiprouting-table
RouteFlags:R-relay,D-downloadtofib
------------------------------------------------------------------------------
RoutingTables:Public
Destinations:9Routes:9
Destination/MaskProtoPreCostFlagsNextHopInterface
127.0.0.0/8Direct00D127.0.0.1InLoopBack0
127.0.0.1/32Direct00D127.0.0.1InLoopBack0
127.255.255.255/32Direct00D127.0.0.1InLoopBack0
172.16.1.0/24RIP1002D192.168.2.1GigabitEthernet0/0/2
192.168.2.0/24Direct00D192.168.2.2GigabitEthernet0/0/2
192.168.2.2/32Direct00D127.0.0.1GigabitEthernet0/0/2
192.168.2.255/32Direct00D127.0.0.1GigabitEthernet0/0/2
192.168.3.0/24RIP1001D192.168.2.1GigabitEthernet0/0/2
255.255.255.255/32Direct00D127.0.0.1InLoopBack0
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原文標題:華為RIP與BFD聯(lián)動實驗
文章出處:【微信號:網(wǎng)絡技術(shù)干貨圈,微信公眾號:網(wǎng)絡技術(shù)干貨圈】歡迎添加關(guān)注!文章轉(zhuǎn)載請注明出處。
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