At 11:03 AM 11/13/2013 Wednesday, Gert Doering pronounced:
Hi,
On Thu, Nov 14, 2013 at 05:51:15AM +1100, Andrew Miehs wrote:
> > 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.
"forwarding to the active HSRP device" and "only the active HSRP interface
answers ARP request" doesn't particularily sound "active-active" to me :-)
You're confusing "ARP" and "data packets".
ARP is handled by the control plane active; data packets are handled
by either VPC peer.
Tim
*This* is what happens on any 6500 that does HSRP on a SVI...
GLBP is active-active in that both L3 routers will accept packets to the
world, instead of L2-forwarding them to the other one inside the SVI.
gert
--
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Gert Doering - Munich, Germany [email protected]
fax: +49-89-35655025 [email protected]
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Tim Stevenson, [email protected]
Routing & Switching CCIE #5561
Distinguished Technical Marketing Engineer, Cisco Nexus 7000
Cisco - http://www.cisco.com
IP Phone: 408-526-6759
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