[c-nsp] Forgetting switch

John Kristoff jtk at northwestern.edu
Mon Nov 8 19:56:54 EST 2004


On Mon, 8 Nov 2004 18:08:49 +0100
"Vincent De Keyzer" <vincent at dekeyzer.net> wrote:

> How does this sort of problem ("router still has ARP entry, but switch has
> forgotten MAC address") usually get fixed? I have the option of increasing

Some solutions have already been posted, but another is to ensure the
host periodically generates traffic so the bridge will refresh it's
address tables.  If it's a critical server/interface it might make sense
to periodically monitor it with your network management system for example.
Taking the opposite approach, you could also have the box push out a
'beacon' packet itself via a reguarly scheduled cron job.

John


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