arp-proxy

[Brian Candler]

On Mon, Nov 21, 2005 at 01:45:44PM +0100, Jon Otterholm wrote:
> The reason why I have to proxy-arp mac between VLANs is that one mac
> cannot end up mapped to more than one port in the switches FDB. If they
> do - we get something called "host-flapping" on IOS-language.

Or put it another way - Cisco haven't properly virtualised their VLANs so
that they have separate forwarding tables.