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Re: sending arp ...

To: Clint Byrum <cbyrum@xxxxxxx>
Subject: Re: sending arp ...
Cc: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
From: Horms <horms@xxxxxxxxxxxx>
Date: Wed, 20 Sep 2000 12:16:30 -0700
On Wed, Sep 20, 2000 at 10:10:18AM -0700, Clint Byrum wrote:
> We have 3com SuperStack III switches here that don't respect the ARP updates
> that heartbeat/fake sends out. This was very frustrating when we were doing
> testing of our heartbeat system. We still haven't taken the time to figure
> out exactly what we need to change on them to make this work properly.
> 
> Right now if the primary doesn't completely fail(meaning it still has power
> and the MAC address still is thought to be "alive" by the switch), the only
> way to get the backup working properly is to turn off the primary. At that
> point, the switch figures out that it has lost its link partner and
> immediately(doesn't even take 90 seconds) starts using the backup. Very
> strange indeed... has anyone else seen something like this? I imagine we
> just need to change a setting on the switch.

There should be a configuration option for the switch to turn off
this behaviour and allow gratuitous ARP to propogate.

-- 
Horms


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