Penetration Testing mailing list archives

Re: When cat comes chasing...


From: Antonin Kral <A.Kral () sh cvut cz>
Date: Sat, 24 Mar 2007 00:57:32 +0100

Hi Wali,

* WALI <hkhasgiwale () gmail com> [2007-03-24 00:50] wrote:
Crazy Solution: I take out any patch cable and re-inserts it, the problem 
gets resolved. I reset any switch, the problem gets resolved. I disconnect 
any uplink cable between the four switches or do a ARP reset thru command 
line, the problem gets resolved for couple of hours or even days.

This sounds like problems with spanning tree in the network. Do you run
STP? Take a look at the topology changes reported by stp. Or one more
thing - this could happen because of over-fulling CAM (switching) tables
of particular switch. Check if you are not running out of memory
somewhere.

    Cheers,

        Antonin

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