Re: Migration to Nexus 5k best practices...

Ryan,
If N5k does not have Layer-3 module, do we still need Peer-gateway cmd?

Thanks!
Malik

On Wed, Oct 10, 2012 at 8:59 AM, Ryan West <rwest_at_zyedge.com> wrote:

> On Wed, Oct 10, 2012 at 00:09:13, 6PE_2.0 wrote:
> > Subject: Migration to Nexus 5k best practices...
> >
> > Hi Mates,
> >
> > Over the next few weeks, i plan on migrating my dual stack 3750 in my
> > data center to NX 5K which connects UCS, NetApp and a bunch of other
> > physical server
> >
> > My primary research/resource so far has been mostly Cisco documentation.
> >
> > Out of curiosity, for those who have done similar migration, any tips
> > on recommended best practices? The Cisco press books i have seen so
> > far is been less technical, rather sales. Also blog links welcomed.
> >
>
> Assuming that this is a smaller install and that you'll be using the layer
> 3 card on the 5k's, you'll want to check out a few things about routing and
> HSRP with VPC's. If you think you'll run an IGP at some point, you should
> plan for extra links between your 5k's over those used as peer-links. The
> basic rule of thumb about VPC is that a packet received on a VPC member
> port needs to be forwarded back out a member port, it cannot use the VPC
> peer-link as its next hop to get to a member port unless a link in that
> particular VPC is down. That plays directly into single attached routing
> devices or devices that have formed an etherchannel to the VPC and are
> running a routing protocol.
>
>
> http://bradhedlund.com/2010/12/16/routing-over-nexus-7000-vpc-peer-link-yes-and-no/
>
>
> http://www.netcraftsmen.net/component/content/article/69-data-center/1215.html
>
> Also, under the main VPC config, you should setup peer-gateway for your
> NetApp management as it will consult the MAC address of the packet received
> vs. its ARP table for replies. Peer-gateway allows the packet received
> with the other HSRP peer MAC to traverse. If you don't feel comfortable
> turning it on all VPC VLAN's, you can exclude ranges.
>
> -ryan
>
>
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Received on Wed Oct 10 2012 - 17:36:31 ART