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On Thu, Mar 02, 2000 at 10:42:53PM -0500, wanger@xxxxxxxxxx wrote:
> On Fri, 3 Mar 2000 11:31:36 +0800 (CST), Wensong Zhang wrote:
>
> >I just tried two LVS boxes with piranha 0.3.15. When the primary LVS stops
> >or fails, the backup will take over and send out two Gratuitous Arp
> >packets for the VIP and the NAT router IP respectively, which should clean
> >the ARP caching in both the web servers and the external router.
>
> Are you sure it was just 2? It should be sending out 5 ARPs on all
> failed over IPs.
Are there just 5 ARPs or 5 to start this and then more gratuitous
ARPs at regular intervals. If the gratuitous ARPs only occur at
fail-over then once the ARP caches on hosts expire there is
a chance that a failed host - whose kernel is still functional -
could reply to an ARP request.
--
Horms
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