HA does not work for SMTP service
david.lang at digitalinsight.com
Mon Feb 24 18:23:48 MST 2003
then what is special about the virtual MAC address? that's the same
procedure that we do to failover an IP address to a different MAC address.
On Mon, 24 Feb 2003, Alan Robertson wrote:
> Date: Mon, 24 Feb 2003 18:21:01 -0700
> From: Alan Robertson <alanr at unix.sh>
> To: David Lang <david.lang at digitalinsight.com>
> Cc: Horms <horms at verge.net.au>, linux-ha at muc.de
> Subject: Re: HA does not work for SMTP service
> David Lang wrote:
> > also the recognition of virtual MAC addresses by network hardware is far
> > from complete.
> > if the VMAC is never stored that means that you need to do an ARP
> > broadcast for every packet you send to that host. I could see that eating
> > up a LOT of your network.
> What we do is just send out a broadcast ARP request, and a broadcast ARP
> reply. Doing this several times when you bring up the interface seems to
> work quite well. Once you've sent out a few such packets, that' all you
> need to do.
> -- Alan Robertson
> alanr at unix.sh
> Alan Robertson <alanr at unix.sh>
> "Openness is the foundation and preservative of friendship.... Let me claim
> from you at all times your undisguised opinions." - William Wilberforce
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