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New Member

Flapping problem in Cat4006

our company have a Cat4006 switch ,and the console are now indicate a message like following :

"2002 Aug 25 19:30:14 %SYS-4-P2_WARN: 1/Host 02:01:00:00:00:00 is flapping betwee

n port 2/29 and port 1/1 1/2"

NOte: the mac addr is 02:01:00:00:00:00,

what's the problem?could you help me ?

thanks a lot

Cisco Employee

Re: Flapping problem in Cat4006

What connects to port 2/29? I'm assuming you are channeling on ports 1/1-2. to some other switchAlso the MAC address seems to be bogus. Try sniffing port/vlan to see who is sending out this MAC address. Also look at the following page

I suggest that you upgrade your CAT4006 to 6.3(8). We have lot of bug fixes in this release. Also

New Member

Re: Flapping problem in Cat4006

to connects a2/29 is a workstation(pc), but as i checking,the tcp/ip config is correct, and i don't have method to this.

note:1/1and 1/2 are using trunk to other switchs

thank you so much!

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