On 18/06/2010, at 4:24 AM, Chris Boyd wrote:

> Having a discussion with a colleague about forwarding on HSRP.  I seem to 
> remember seeing datagrams that were addressed to the virtual IP address, but 
> were delivered to the standby router getting forwarded from the standby to 
> the active for routing.

the "virtual mac" for the FHRP exists on the active only.
i.e. if you look at the mac table on the switch you'll see that the mac exists 
on the FHRP "active".

an exception to the above is where you have cisco switches that support virtual 
Port Channel (vPC) where the vPC pair still runs a FHRP like HSRP but the 
'standby' actually forwards too because vPC is about running your 
infrastructure active/active.


cheers,

lincoln.


_______________________________________________
cisco-nsp mailing list  [email protected]
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/

Reply via email to