[c-nsp] FHRP selection within Nexus

[Andrew Miehs]

On Thu, Nov 14, 2013 at 5:41 AM, Gert Doering <gert at greenie.muc.de> wrote:

> Hi,
>
> On Thu, Nov 14, 2013 at 05:16:15AM +1100, Andrew Miehs wrote:
> > HSRP is dual active on the Nexus, so I would just go with that.
>
> How does that work?
>
> Have a read of
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/C07-572835-00_NX-OS_vPC_DG.pdf
The bottom of page 24...

HSRP
The use of HSRP in the context of vPC does not require any special
configuration. With vPC, only the active HSRP
interface answers ARP requests, but both HSRP interfaces (active and
standby) can forward traffic.
If an ARP request coming from a server arrives on the secondary HSRP
device, it is forwarded to the active HSRP
device through the peer link.