Re: Gratuitous ARP on interface shut ?

From: Sadiq Yakasai (sadiqtanko@gmail.com)
Date: Thu Jul 19 2007 - 20:18:48 ART

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Hey Thomas,

I would think the entries get flushed out of the arp cache only when
the arp timer expires.

I know that gratutious arp is sent out by a station (upon a reboot i
think) when the mac address of a host changes (changing the network
card, changing the mac address, etc) so that other devices can update
their arp entries.

HTH

Sadiq

On 7/19/07, thomas.rader@freesurf.ch <thomas.rader@freesurf.ch> wrote:
> Hello,
>
> Can anyone tell me if a Cisco switch sends out a Gratuitous ARP when you shut an interface in order for that interfaces ARP entry be be removed on other devices ?
>
> Would make sence, but I'm not sure. Question relates to HSRP / OSPF changes.
>
> Thanks, Thomas
>
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