Re: port flapping

"sharqi" <sharqi@xxxxx> wrote:

>I 've got a problem with Catalyst 2980G. Ports on it have been flapping.
>This problem concern only one switch in my network only one vlan. There are
>no errors on this ports, it seems like broadcast or unicast is flooding but
>I don't know how to fix it.
>


WHat kind of flapping? If the port is going down and up then I would
chaeck that PC for virus/spyware. Each time we have a port doing this
it is because of an infected PC that is scanning every IP in existence
as fast as it can.

If it is MAC address flapping between two ports, you may have a
multi-nic server that needs etherchannel support from the switch.

If macs are flappiing between cross-over/trunks you may have some kind
of loop or repeated fail-over.
DiGiTAL_ViNYL (no email)
.

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