FAQ-S9700交换机(V200R001C00SPC300)端口未配置边缘端口却发生了端口边缘端口失效告警问题

发布时间:  2016-01-06 浏览次数:  417 下载次数:  0
问题描述

1.设备型号及版本信息:S9712 V200R001C00SPC300

2.组网拓扑:略

3.端口配置及故障现象

interface GigabitEthernet11/0/35

port link-type trunk

undo port trunk allow-pass vlan 1

port trunk allow-pass vlan 599 850 to 949

#

告警信息:

Nov 18 2015 10:58:26+08:00 S9700 %%01MSTP/4/EDGE_PORT(l)[309]:Edged-port GigabitEthernet11/0/35 received BPDU packet, then the active state of the edged-port will be disabled!

Nov 18 2015 10:58:22+08:00 S9700 %%01IFPDT/4/IF_STATE(l)[310]:Interface GigabitEthernet11/0/35 has turned into UP state.

Nov 18 2015 10:58:20+08:00 S9700 %%01IFPDT/4/IF_STATE(l)[311]:Interface GigabitEthernet11/0/35 has turned into DOWN state.

Nov 18 2015 10:58:11+08:00 S9700 %%01MSTP/4/EDGE_PORT(l)[312]:Edged-port GigabitEthernet11/0/35 received BPDU packet, then the active state of the edged-port will be disabled!

Nov 18 2015 10:58:06+08:00 S9700 %%01IFPDT/4/IF_STATE(l)[313]:Interface GigabitEthernet11/0/35 has turned into UP state.

Nov 18 2015 10:58:04+08:00 S9700 %%01IFPDT/4/IF_STATE(l)[314]:Interface GigabitEthernet11/0/35 has turned into DOWN state.

Nov 18 2015 10:58:00+08:00 S9700 %%01IFPDT/4/IF_STATE(l)[315]:Interface GigabitEthernet11/0/35 has turned into UP state.

Nov 18 2015 10:57:58+08:00 S9700 %%01IFPDT/4/IF_STATE(l)[316]:Interface GigabitEthernet11/0/35 has turned into DOWN state.

Nov 18 2015 10:57:57+08:00 S9700 %%01MSTP/4/EDGE_PORT(l)[317]:Edged-port GigabitEthernet11/0/35 received BPDU packet, then the active state of the edged-port will be disabled!

Nov 18 2015 10:57:52+08:00 S9700 %%01IFPDT/4/IF_STATE(l)[318]:Interface GigabitEthernet11/0/35 has turned into UP state.

Nov 18 2015 10:57:51+08:00 S9700 %%01IFPDT/4/IF_STATE(l)[319]:Interface GigabitEthernet11/0/35 has turned into DOWN state.

 

4.分析:

从log信息来看,11/0/35端口收到BPDU报文,产生边缘端口失效log上报,但实际情况该端口下没有配置为边缘端口,理论上与配置完全冲突。

解决方案

1.S9700交换机V2R1版本端口默认开启边缘端口探测功能,即端口UP一定时间内,自动变成边缘端口,该时间为2*hello+1=5s,与上述告警log完全吻合;

2.S9700交换机全局配置了bpdu protect功能,但只有手动配置的边缘端口才会生效,即端口默认开启边缘端口的特性,在收到bpdu报文后,不会触发bpdu protect功能,只会将端口设置为非边缘端口。

3.问题根因是端口反复出现down-up,up后5s端口默认变成边缘端口状态,此时下端设备有bpdu报文产生导致本端口产生边缘端口失效log,因此解决物理端口up/down问题即可。

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