Hello,
you can use ebtables (http://users.pandora.be/bart.de.schuymer/ebtables/).
On Mon, 2 Sep 2002, Geoff Steer wrote:
> I have a problem involing arp table entries that I'm hoping someone can
> help with.
>
> I'm working on a mail system that utilises multiple Linux servers in a
> redundant configuration.
> The configuration has pairs of Linux servers running as MTAs. Each pair
> of real servers hides behind a virtual server name. The virtual server
> name and load balancing of real servers is handled by an Alteon AD3 switch.
> Each of the Linux servers has two ethernet interfaces with the second
> interface also connected to a (second) Alteon. The two Alteons are
> configured in an active-standby arrangement using VRRP.
> The IP addresses of each linux servers' ethernet interfaces are on the
> same subnet (172.16.180.0/128),
>
> The configuration of the Alteon causes each of the Alteon IP
> addresses to appear on each interface of the Linux box, with the same
> MAC address i.e.
>
> alteon1 (172.16.180.2) at 00:00:E8:D7:4F:5D [ether] on eth0
> alteon2 (172.16.180.3) at 00:50:BA:CB:DD:D8 [ether] on eth0
> alteon1 (172.16.180.2) at 00:00:E8:D7:4F:5D [ether] on eth1
> alteon2 (172.16.180.3) at 00:50:BA:CB:DD:D8 [ether] on eth1
>
> What I'm looking to do is to not have the second entry for any host
> appear in the arp table if it's already there for another interface.
> i.e. if alteon1 has an arp entry pointing to eth0, don't add one for
> eth1 - which I guess means, don't issue arp requests/responses on the
> other interface for an Alteon if we have an arp table entry.
> The solution doesn't need to be tailored to the Alteon IP
> addresses, just a general rule of not issuing arp requests/responses
> on a second interface if we already have a similiar entry pointing to
> the first interface.
>
> Regards
> Geoff Steer
--
`)_|_(' PSIkappa
I k psi _at_ atlantis.sk
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