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配置BFD单跳检测二层链路示例
操作步骤
- 配置SwitchA的BFD单跳检测
# 使能SwitchA上的BFD功能。
<HUAWEI> system-view [HUAWEI] sysname SwitchA [SwitchA] bfd [SwitchA-bfd] quit
# 配置SwitchA上的BFD会话。
[SwitchA] bfd atob bind peer-ip default-ip interface gigabitethernet 0/0/1 [SwitchA-bfd-session-atob] discriminator local 1 [SwitchA-bfd-session-atob] discriminator remote 2 [SwitchA-bfd-session-atob] commit [SwitchA-bfd-session-atob] quit
- 配置SwitchB的BFD单跳检测
# 使能SwitchB上的BFD功能。
<HUAWEI> system-view [HUAWEI] sysname SwitchB [SwitchB] bfd [SwitchB-bfd] quit
# 配置SwitchB上的BFD会话。
[SwitchB] bfd btoa bind peer-ip default-ip interface gigabitethernet 0/0/1 [SwitchB-bfd-session-btoa] discriminator local 2 [SwitchB-bfd-session-btoa] discriminator remote 1 [SwitchB-bfd-session-btoa] commit [SwitchB-bfd-session-btoa] quit
- 验证配置结果
配置完成后，在SwitchA和SwitchB上执行display bfd session all verbose命令，可以看到建立了一个单跳检测的BFD会话，且会话状态为Up。
以SwitchA上的显示为例。
[SwitchA] display bfd session all verbose -------------------------------------------------------------------------------- Session MIndex : 4097 (One Hop) State : Up Name : atob -------------------------------------------------------------------------------- Local Discriminator : 1 Remote Discriminator : 2 Session Detect Mode : Asynchronous Mode Without Echo Function BFD Bind Type : Interface(GigabitEthernet0/0/1) Bind Session Type : Static Bind Peer IP Address : 224.0.0.184 NextHop Ip Address : 224.0.0.184 Bind Interface : GigabitEthernet0/0/1 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 : 255 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SwitchB上执行display bfd session all verbose命令，可以看到建立了一个单跳检测的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 (One Hop) State : Down Name : atob -------------------------------------------------------------------------------- Local Discriminator : 1 Remote Discriminator : 2 Session Detect Mode : Asynchronous Mode Without Echo Function BFD Bind Type : Interface(GigabitEthernet0/0/1) Bind Session Type : Static Bind Peer IP Address : 224.0.0.184 NextHop Ip Address : 224.0.0.184 Bind Interface : GigabitEthernet0/0/1 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 : 255 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 : 16402 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 # bfd # bfd atob bind peer-ip default-ip interface GigabitEthernet0/0/1 discriminator local 1 discriminator remote 2 commit # return
SwitchB的配置文件
# sysname SwitchB # bfd # bfd btoa bind peer-ip default-ip interface GigabitEthernet0/0/1 discriminator local 2 discriminator remote 1 commit # return
