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配置BFD多跳检测示例
操作步骤
- 配置设备间的网络互连
# 配置设备各接口的IP地址，以SwitchA为例。SwitchB和SwitchC的配置与SwitchA类似，详见配置文件。
<HUAWEI> system-view [HUAWEI] sysname SwitchA [SwitchA] vlan batch 10 [SwitchA] interface gigabitethernet 0/0/1 [SwitchA-GigabitEthernet0/0/1] port link-type hybrid [SwitchA-GigabitEthernet0/0/1] port hybrid pvid vlan 10 [SwitchA-GigabitEthernet0/0/1] port hybrid untagged vlan 10 [SwitchA-GigabitEthernet0/0/1] quit [SwitchA] interface vlanif 10 [SwitchA-Vlanif10] ip address 10.1.1.1 24 [SwitchA-Vlanif10] quit
- 配置静态路由，使SwitchA、SwitchC之间有可达路由
# SwitchC的配置与SwitchA类似，具体配置过程略，详见配置文件。
[SwitchA] ip route-static 10.2.1.0 24 10.1.1.2 - 配置多跳BFD检测
# 在SwitchA上配置与SwitchC之间的BFD会话。
[SwitchA] bfd [SwitchA-bfd] quit [SwitchA] bfd atoc bind peer-ip 10.2.1.2 [SwitchA-bfd-session-atoc] discriminator local 10 [SwitchA-bfd-session-atoc] discriminator remote 20 [SwitchA-bfd-session-atoc] commit [SwitchA-bfd-session-atoc] quit
# 在SwitchC上配置与SwitchA之间的BFD会话。
[SwitchC] bfd [SwitchC-bfd] quit [SwitchC] bfd ctoa bind peer-ip 10.1.1.1 [SwitchC-bfd-session-ctoa] discriminator local 20 [SwitchC-bfd-session-ctoa] discriminator remote 10 [SwitchC-bfd-session-ctoa] commit [SwitchC-bfd-session-ctoa] quit
- 验证配置结果
配置完成后，在SwitchA和SwitchC上执行display bfd session all verbose命令，可以看到建立了一个BFD会话，且状态为Up。以SwitchA上的显示为例：
[SwitchA] display bfd session all verbose -------------------------------------------------------------------------------- Session MIndex : 4097 (Multi Hop) State : Up Name : atoc -------------------------------------------------------------------------------- Local Discriminator : 10 Remote Discriminator : 20 Session Detect Mode : Asynchronous Mode Without Echo Function BFD Bind Type : Peer IP Address Bind Session Type : Static Bind Peer IP Address : 10.2.1.2 Bind Interface : - Track Interface : - FSM Board Id : 0 TOS-EXP : 7 Min Tx Interval (ms) : 1000 Min Rx Interval (ms) : 1000 Actual Tx Interval (ms): 1000 Actual Rx Interval (ms): 1000 Local Detect Multi : 3 Detect Interval (ms) : 3000 Echo Passive : Disable Acl Number : - Destination Port : 3784 TTL : 254 Proc Interface Status : Disable Process PST : Disable WTR Interval (ms) : - Active Multi : 3 DSCP : - Last Local Diagnostic : No Diagnostic Bind Application : No Application Bind Session TX TmrID : - Session Detect TmrID : - Session Init TmrID : - Session WTR TmrID : - Session Echo Tx TmrID : - PDT Index : FSM-0 | RCV-0 | IF-0 | TOKEN-0 Session Description : - -------------------------------------------------------------------------------- Total UP/DOWN Session Number : 1/0
# 对SwitchA的GE0/0/1接口执行shutdown操作，模拟链路故障。
[SwitchA] interface gigabitethernet 0/0/1 [SwitchA-GigabitEthernet0/0/1] shutdown [SwitchA-GigabitEthernet0/0/1] quit
配置完成后，在SwitchA和SwitchC上执行display bfd session all verbose命令，可以看到建立了一个多跳检测的BFD会话，且会话状态为Down。以SwitchA上的显示为例：
[SwitchA] display bfd session all verbose -------------------------------------------------------------------------------- Session MIndex : 4097 (Multi Hop) State : Down Name : atoc -------------------------------------------------------------------------------- Local Discriminator : 10 Remote Discriminator : 20 Session Detect Mode : Asynchronous Mode Without Echo Function BFD Bind Type : Peer IP Address Bind Session Type : Static Bind Peer IP Address : 10.2.1.2 Bind Interface : - Track Interface : - FSM Board Id : 0 TOS-EXP : 7 Min Tx Interval (ms) : 1000 Min Rx Interval (ms) : 1000 Actual Tx Interval (ms): 13000 Actual Rx Interval (ms): 13000 Local Detect Multi : 3 Detect Interval (ms) : - Echo Passive : Disable Acl Number : - Destination Port : 3784 TTL : 254 Proc Interface Status : Disable Process PST : Disable WTR Interval (ms) : - Active Multi : 3 DSCP : - Last Local Diagnostic : Control Detection Time Expired Bind Application : No Application Bind Session TX TmrID : 16897 Session Detect TmrID : - Session Init TmrID : - Session WTR TmrID : - Session Echo Tx TmrID : - PDT Index : FSM-0 | RCV-0 | IF-0 | TOKEN-0 Session Description : - -------------------------------------------------------------------------------- Total UP/DOWN Session Number : 0/1
配置文件
SwitchA的配置文件
# sysname SwitchA # vlan batch 10 # bfd # interface Vlanif10 ip address 10.1.1.1 255.255.255.0 # interface GigabitEthernet0/0/1 port link-type hybrid port hybrid pvid vlan 10 port hybrid untagged vlan 10 # bfd atoc bind peer-ip 10.2.1.2 discriminator local 10 discriminator remote 20 commit # ip route-static 10.2.1.0 255.255.255.0 10.1.1.2 # return
SwitchB的配置文件
# sysname SwitchB # vlan batch 10 20 # interface Vlanif10 ip address 10.1.1.2 255.255.255.0 # interface Vlanif20 ip address 10.2.1.1 255.255.255.0 # interface GigabitEthernet0/0/1 port link-type hybrid port hybrid pvid vlan 10 port hybrid untagged vlan 10 # interface GigabitEthernet0/0/2 port link-type hybrid port hybrid pvid vlan 20 port hybrid untagged vlan 20 # return
SwitchC的配置文件
# sysname SwitchC # vlan batch 20 # bfd # interface Vlanif20 ip address 10.2.1.2 255.255.255.0 # interface GigabitEthernet0/0/1 port link-type hybrid port hybrid pvid vlan 20 port hybrid untagged vlan 20 # bfd ctoa bind peer-ip 10.1.1.1 discriminator local 20 discriminator remote 10 commit # ip route-static 10.1.1.0 255.255.255.0 10.2.1.1 # return
