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

Jay,

Most companies I've installed the nexus 1k's in, like the idea because they can give control of the VM veth back to the network teams. If you wanted to leave control in the server teams hands then they could have stayed with the virtual switches/distributed virtual switches If we leave out the other features the 1k gives you.

@charlies, there are lots of was to do the migration but here is the method I like to use.

  Determine all of the vlan priorities on the existing 3750 switches that will be migrated over to the 5ks. Create a vPC on the 5ks and interconnect the 5k to the 3750's after you have configured the 5ks vlans to be a a higher value then the 3750. Ensure that you do not add any of the subnets that you are migrating to the 5ks into the 5k routing process yet, as this method will move the the layer2 first then the layer 3 last. After you interconnect the switches and verify all the spanning-tree parameters you can begin moving servers or devices over to the 5ks. All of the traffic flow will traverse the link between the 5ks ad the 3750's so make sure you add enough bandwidth. After you have moved all the devices you can begin the layer 3 migration.

If you are using FHRP let me know because there is a lot to do here.

Based on your companies policies you may need two change control windows to do this. I would suggest doing this in two windows so that you give time for any layer 2 issues to surface as some applications do not like working with the 5ks, a mainly the ones that have built in intelligence as to their gateways and such . The way Cisco HSRP or FHRP works can be an issue for some applications hence the reason they have added other features to the domain configurations.

Regards,
 Joe Sanchez

( please excuse the brevity of this email as it was sent via a mobile device. Please excuse misspelled words or sentence structure.)

On Oct 10, 2012, at 6:14 AM, Jay McMickle <jay.mcmickle_at_yahoo.com> wrote:

> We are doing the same, but with the help of a vendor. I don't know how to answer your best practices question, but we are using 5596 with 6248, UCS 510, and L3 modules on the 5596. We later found out that the 5K's don't do VDC which would have been helpful, but 7k's do. This solution, coupled with our 5585's are a great solution as we've been in a POC with our Hosting and Storage team for about 5 months. We are also deploying Nexus 1010 for VM control. Our issue now is trying to balance if we'll allow the H&S team manage the Nexus 1k for their VM's or if our team will do it. We have a general rule that it takes to teams to misconfigure something for it to be incorrect. We just don't want to give them too much control, either.
>
> Cheers.
>
> Regards,
> Jay McMickle- CCIE #35355 (RS), 3x CCNP (RS,Security,Design)
> Sent from my iPhone
>
> On Oct 9, 2012, at 11:09 PM, "6PE_2.0" <spycharlies_at_gmail.com> wrote:
>
>> 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.
>>
>> Cheers
>>
>> ~
>> Charlie
>>
>>
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Received on Wed Oct 10 2012 - 07:21:51 ART