某局点V7无线插卡无法正常堆叠故障排查

一、问题现象

客户现场两台S7510E交换机使用IRF2进行堆叠，现在需要在每台交换机上各增加一块LSQM1WCMX20的无线控制引擎插卡来部署无线业务。并且要求无线控制引擎插卡需要跨框进行IRF2堆叠，现场进行堆叠操作后发现作为IRF Slave的插卡不停在重启，无法聚合成功，并且设备弹出告警信息如下。

%Mar 6 13:57:26:939 2018 AC1 IFNET/3/PHY_UPDOWN: Physical state on the interface Ten-GigabitEthernet1/0/2 changed to up.

%Mar 6 13:57:26:940 2018 AC1 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Ten-GigabitEthernet1/0/2 changed to up.

%Mar 6 13:58:07:353 2018 AC1 IRF/4/IRF_HELLO_TIMEOUT: IRF member 2 hello timed out.

%Mar 6 14:07:05:532 2018 AC1 SHELL/5/SHELL_LOGOUT: Console logged out from con0.

%Mar 6 14:11:31:156 2018 AC1 IRF/4/IRF_HELLO_TIMEOUT: IRF member 2 hello timed out.

二、原因分析

1、首先排除设备硬件故障的可能，查看无线插卡设备指示灯是否正常，确保板卡正确完整插入机框。

2、再次通过命令行查询板卡信息，确保做堆叠设备的版本一致：

<AC1> display version

H3C Comware Software, Version 7.1.064, Release 5218P01

Copyright(c)2004-2017New H3C Technologies Co., Ltd. All rights reserved.

H3C LSQM1WCMX20 uptime is 0 weeks, 0 days, 0 hours, 33 minutes

<AC2> display version

H3C Comware Software, Version 7.1.064, Release 5218P01

Copyright(c)2004-2017New H3C Technologies Co., Ltd. All rights reserved. 

H3C LSQM1WCMX20 uptime is 0 weeks, 0 days, 0 hours, 33 minutes

3、然后排查配置侧是否存在问题，下面为现场配置：

AC1无线控制引擎插卡配置：

 irf mac-address persistent timer

 irf auto-update enable

 irf auto-merge enable

 irf member 1 priority 32

#

irf-port 1

 port group interface Ten-GigabitEthernet1/0/2

#

AC2无线控制引擎插卡配置：

irf mac-address persistent timer

 irf auto-update enable

 irf auto-merge enable

 irf member 2 priority 1

#

irf-port 2

 port group interface Ten-GigabitEthernet2/0/2

4、确认配置无误后，再次按照标准的IRF2配置顺序进行配置后发现还是无法堆叠成功，进而查看AC1的日志发现：

%Mar 6 13:57:26:939 2018 AC1 IFNET/3/PHY_UPDOWN: Physical state on the interface

Ten-GigabitEthernet1/0/2 changed to up.

%Mar 6 13:57:26:940 2018 AC1 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Ten-GigabitEthernet1/0/2 changed to up.

%Mar 6 13:58:07:353 2018 AC1 IRF/4/IRF_HELLO_TIMEOUT: IRF member 2 hello timed out.

%Mar 6 14:07:05:532 2018 AC1 SHELL/5/SHELL_LOGOUT: Console logged out from con0.

%Mar 6 14:11:31:156 2018 AC1 IRF/4/IRF_HELLO_TIMEOUT: IRF member 2 hello timed out.

5、通过日志发现AC1应该是发送的hello报文超时导致的，由此联想到两台设备不能正常通信，通过检查STP时，发现交换机Ten-GigabitEthernet1/0/2内联接口被阻断了。

=====================display stp brief=======================

MST ID     Port                       Role   STP State     Protection

0          Ten-GigabitEthernet1/0/2   ROOT   FORWARDING    NONE

0          Ten-GigabitEthernet2/0/2   ALTE   DISCARDING    NONE

三、解决方法

由于V7平台交换机默认开启STP功能自动计算生成树，导致内侧互联端口被阻塞，关闭交换机侧内联接口的STP功能后，成功实现AC插卡的IRF2功能。        

2018年06月