[c-nsp] HSRP forwarding question

[Arie Vayner (avayner)]

The exception for this is on Nexus vPC and 6500 VSS. Both nodes would be
forwarding in these cases.

Arie

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Shimol Shah
(shimshah)
Sent: Thursday, June 17, 2010 22:38
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] HSRP forwarding question

So what is the question ?

HSRP speakers choose a ACTIVE and a STANDBY. ACTIVE is the *only* one 
who does the forwarding.

They pick a HSRP VIP which is the DG of the users. ACTIVE one repliesto 
ARP/own's MAC for it. Users forward to ACTIVE. STANDBY is not used for 
traffic from users->network until ACTIVE is down.

GLBP has a more ACTIVE/ACTIVE implementation by choosing a AVG and 
multiple AVFs

Shimol


On 6/17/10 2:24 PM, 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.
>
> It's been a while since I looked at HSRP in the lab, and I'm about to
hop on a plane, so I appeal to the net.wisdom :-)
>
> Thanks,
>
> -Chris
>
>
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/