【交换机在江湖】由于TC报文泛洪导致交换机直连设备Ping丢包故障案例

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发表于 : 2018-3-14 17:01:42 最新回复:2018-03-14 18:32:38
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涉及产品和版本

不区分形态和版本

组网情况

不涉及

现象描述

交换机与直连设备之间Ping丢包。

原因分析

TC报文泛洪导致ARP表项频繁刷新从而导致短时间内ARP表项无法学习到交换机与直连设备之间会产生Ping丢包。

处理步骤

1.         登录交换机设备在任意视图下执行命令display logbuffer查看日志信息发现有大量的TC报文。

<HUAWEI> display logbuffer                                         
Logging buffer configuration and contents : enabled               
Allowed max buffer size : 1024                                    
Actual buffer size : 512                                          
Channel number : 4 , Channel name : logbuffer                     
Dropped messages : 0                                              
Overwritten messages : 0                                          
Current messages : 267  
May 15 2017 14:29:21 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is Eth-Trunk0.
May 15 2017 14:30:02 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet1/0/38.
May 15 2017 14:30:42 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet1/0/38.
May 15 2017 14:31:20 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet2/0/18.
May 15 2017 14:32:10 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet2/0/18.
May 15 2017 14:36:54 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet2/0/18.
May 15 2017 14:36:56 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet2/0/18.
May 15 2017 14:37:02 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet2/0/19.
May 15 2017 14:37:04 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet2/0/19.
May 15 2017 14:37:54 WZ-S9306-C-1 %MSTP/6/RECEIVE_MSTITC(l): MSTP received BPDU with TC, MSTP process 0 instance 0, port name is GigabitEthernet2/0/20.

2.         任意视图下连续多次执行命令display arp发现ARP表项刷新频繁。

<HUAWEI>dis arp                                                  
IP ADDRESS   MAC ADDRESS  EXPIRE(M) TYPE  INTERFACE  VPN-INSTANCE 
                                     VLAN/CEVLAN                  
------------------------------------------------------------------------------  
192.168.150.5  7c1c-f1d2-9580        I -    Eth0/0/0                  
----------------------------------------------------------------- 
 

3.         尝试系统视图下执行命令arp topology-change disable以及mac-address update arp去使能设备响应TC报文的功能即当设备收到TC报文时不对ARP表项进行老化或删除。

<Quidway> system-view                                              
[Quidway] arp topology-change disable                           
[Quidway] mac-address update arp                      

4.         排查近期操作及组网拓扑排除环路。

总结与建议

用户版本为V100R002版本建议用户尽快升级版本到V200R010并加载最新补丁。

本帖最后由 交换机在江湖 于 2018-3-14 17:14 编辑
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网络管理员木头  管理员   发表于 2018-3-14 18:32:38 已赞(0) 赞(0)

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