MP Group成员接口状态频繁Up/Down的故障解决步骤如下:
网络环境
两台NE40路由器RouterA和RouterB通过MP Group链路连接,MP Group由8条E1链路捆绑而成。如图所示。
MP Group故障组网图
在进行一次设备调整后,发现业务不通,查看接口发现MP Group成员不停地Up/Down,MP Group自身也有Up/Down现象。
查看日志缓冲区,可以看到有很多Serial口和MP Group接口Up/Down的日志信息:
- %Jul 21 04:06:48 2007 A2 LSPM/5/LSPM:
- Info:[LSPM] Get interface event 1 and address 0x0 for interface Mp-group1/1/1
- %Jul 21 04:06:48 2007 A2 IFNET/5/UPDOWN:Interface Serial1/1/3:0 Turns into DOWN state
- %Jul 21 04:06:48 2007 A2 LSPM/5/LSPM:
- Info:[LSPM] Get interface event 1 and address 0x0 for interface Mp-group1/1/1
- %Jul 21 04:06:48 2007 A2 IFNET/5/UPDOWN:Interface Serial1/1/2:0 Turns into DOWN state
- %Jul 21 04:06:48 2007 A2 LSPM/5/LSPM:
- Info:[LSPM] Get interface event 1 and address 0x0 for interface Mp-group1/1/1
- %Jul 21 04:06:48 2007 A2 IFNET/5/UPDOWN:Interface Serial1/1/1:0 Turns into DOWN state
- %Jul 21 04:06:48 2007 A2 LSPM/5/LSPM:
- Info:[LSPM] Get interface event 1 and address 0x0 for interface Mp-group1/1/1
- %Jul 21 04:06:48 2007 A2 IFNET/5/UPDOWN:Interface Serial1/1/0:0 Turns into DOWN state
- %Jul 21 04:06:48 2007 A2 LSPM/5/LSPM:
- Info:[LSPM] Get interface event 1 and address 0x0 for interface Mp-group1/1/1
- %Jul 21 04:06:47 2007 A2 IFNET/5/UPDOWN:Line protocol(MPLSCP) on interface Mp-group1/1/1, changed state to UP
- %Jul 21 04:06:47 2007 A2 RM/4/RMLOG:OSPF PhyIf Info: IfName: Mp-group1/1/1, P1: 4d, P2: 400088e, P3: 3, P4: 10240000, P5: 1500, P6: 4
- %Jul 21 04:06:47 2007 A2 RM/4/RMLOG:OSPF LogicIf Info: IfName: Mp-group1/1/1, P1: 21, P2: 77, P3: 67111054, P4: 3, P5: 10240000, P6: 1500, P7: 4
- %Jul 21 04:06:47 2007 A2 RM/4/RMLOG:OSPF PhyIf Info: IfName: Mp-group1/1/1, P1: 4d, P2: 400088e, P3: 3, P4: 10240000, P5: 1500, P6: 6
- %Jul 21 04:06:47 2007 A2 IFNET/5/UPDOWN:Line protocol(OSICP) on interface Mp-group1/1/1, changed state to UP
- %Jul 21 04:06:47 2007 A2 IFNET/5/UPDOWN:Line protocol(MPLSCP) on interface Mp-group1/1/1, changed state to DOWN
故障分析
步骤 1 检查链路两端NE40的配置,发现配置没有异常。
步骤 2 由于设备调整后链路中断,设备重起后PPP需要重新协商,可能出现协商不成功,重启接口板后发现问题依然存在。
步骤 3 执行命令display interface mp-group,查看接口信息,发现两端路由器上的MP group的成员接口中有一些处在Active状态,另一些处在Inactive状态,并且状态不停的变化,而正常情况下应该都是Active。同时发现Peer IP address协商异常。显示的接口信息如下:
- <A2> display interface mp-group1/1/1
- Mp-group1/1/1 current state: up,
- Line protocol current state: up
- Description: to_B2_MPgroup1/0/1
- Internet address is 10.240.240.5/30
- Link-protocol is PPP, MP, NO SHORTSEQUENCE, DISCRIMINATOR
- MRRU 1500 bytes, Peer MRRU 1500 bytes
- The Max HQOS BandWidth is 9520 Kbits
- Include: 5 * E1, Active: 4 * E1
- Serial1/1/4:0 A
- Serial1/1/3:0 A
- Serial1/1/2:0 A
- Serial1/1/1:0 A
- Serial1/1/0:0 I
- Peer IP address is 10.240.240.2/32
- NCP: IPCP Opened, OSICP Opened, MPLSCP Opened
- <A1> display interface mp-group1/1/1
- Mp-group1/1/1 current state: up,
- Line protocol current state: up
- Description:to_B1_MPgroup1/0/1
- Internet address is 10.240.240.1/
关键词标签:路由
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