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交换机4506+2960G

zlc__2010
Level 1
Level 1
在2960G上曝出信息如下:1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host 30f7.0db8.433f in vlan 1 is flapping between port Gi0/1 and port Gi0/2
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host a493.4ce2.6b3f in vlan 1 is flapping between port Gi0/1 and port Gi0/3
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host a493.4ce2.6b3f in vlan 1 is flapping between port Gi0/1 and port Gi0/3
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host a493.4ce2.6b3f in vlan 1 is flapping between port Gi0/1 and port Gi0/3
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host 30f7.0db8.433f in vlan 1 is flapping between port Gi0/1 and port Gi0/2
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host 30f7.0db8.433f in vlan 1 is flapping between port Gi0/1 and port Gi0/2
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host a493.4ce2.6b3f in vlan 1 is flapping between port Gi0/1 and port Gi0/3
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host a493.4ce2.6b3f in vlan 1 is flapping between port Gi0/1 and port Gi0/3
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host 30f7.0db8.433f in vlan 1 is flapping between port Gi0/1 and port Gi0/2
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host 30f7.0db8.433f in vlan 1 is flapping between port Gi0/1 and port Gi0/2
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host a493.4ce2.6b3f in vlan 1 is flapping between port Gi0/1 and port Gi0/3
1y17w: %SW_MATM-4-MACFLAP_NOTIF: Host 30f7.0db8.433f in vlan 1 is flapping between port Gi0/1 and port Gi0/2
网络图142913bhm7htxnji8thjcg.png
对我的网络有影响么?现在网络时不时的断一下,跟这个有关系么?

7 条回复7

青沙流萤
Level 7
Level 7
建议先查看一下配置是否有误,你给出的拓扑信息不太全,再看一下是否有环路存在

cruiseluo
Spotlight
Spotlight
这个现象是mac地址不断地在两个端口上摆动
感觉你的拓扑结构有点问题,如果switch2和switch3之间有HSRP关系的话那么它们应该是4506吧,
那么同时接switch2和switch3还有router的交换机是2960G。如果是这样的话,2960G就是多余的或者
应该把它放到switch2,switch3下面和PC之间(2960G同时接switch2,switch3和PC),而且那个router
也多余(4506本身就是三层交换机)。另外,你的HSRP配置track没有,如果没有最好配一个。能否把拓扑
结构详细描述出来?

jingjian
Spotlight
Spotlight
请检查port-channel的配置,这种环路一般都是由于port-channel配置错误引起的。
在你的核心,swich2,swich3,通过以下命令检查各交换机的互联端口
show run int g1/0/2,
show run g1/0/3,
show ether port summer

YilinChen
Spotlight
Spotlight
flapping between port Gi0/1 and port Gi0/2
flapping between port Gi0/1 and port Gi0/3
重点检查1 2 3 号口配置

Rockyw
Spotlight
Spotlight
the C2960 doesn't accept the command switchport trunk encapsulation dot1q if it supports only 802.1Q as it happens on C2950.
There is a SW bug that affects some IOS version of C2950, C2960, and C3750 where the switch treats the reception of its own loopback frames as a sign of a problem insteaf of a good sign.
详细情况请看:Error : 5w2d: %SW_MATM-4-MACFLAP_NOTIF: flapping
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Rockyw | If it solves your problem, please mark as answer. Thanks !

one-time
Level 13
Level 13
您好,已有多为用户为您提供问题解决办法,如您的问题已被解决,快来标记最佳答案吧!

kangjiawang
Level 1
Level 1
这个mac地址是私营mac地址,一般是hsrp的虚拟mac或者下面服务器做的双击产生的虚拟mac,这种mac flapping一般都是下面有负载均衡产生的,一般情况下不会产生影响,如果是环路问题,那么你的网络会中断。
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