Solved: Re: 3 site Multipod APIC design question

TFashy · ‎10-25-2017

Hi,

I am deploying a 3 POD ACI design with 5 APICs, everything is working okay other than the remote APICs joining the cluster.

I am looking at the design doc and I want a bit of clarity on the below table. As in my case, I have the follwoing APIC distributions:

POD1 - 2 APICs

POD2 - 1 APIC

POD 3 - 2 APICs.

This does not match the below table exactly as POD2 should be 2 apics and POD3 1 apic, but will my design work?

$Description: Y:\Production\Cisco Projects\C11 Deployment Guide-White Paper\C11-737855-00\v1a 200916 0635 AnandG\C11-737855-00_ACI Multi Pod White Paper\Links\C11-737855-00_figure25.jpg$

Will this stop my 1 APIC in POD2 from joining the cluster?

Thanks,

Tayo

TFashy · ‎10-26-2017

According to Joseph Ezerski (of Cisco), when asked the same questions responded as follows.

"Hello Tayo. APICs can go anywhere you want them. The design guide is trying to give you a good option to minimize the loss of quorum if any pods should go offline or become unavailable. As far as remote APICs joining the cluster, make sure when you move them to other pods that you wipe them (acidiag touch setup). When you do the initial APIC setup process, make sure you answer the question about TEP pool to be the TEP pool from POD 1. All APICs must be setup to use the TEP pool from POD1, otherwise the cluster won't form. Just curious, what is driving the choice for 5 APICs? Nothing wrong with that, mind you. Are you deploying an extra large fabric and you need the scale?"

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TFashy · ‎10-26-2017

According to Joseph Ezerski (of Cisco), when asked the same questions responded as follows.

"Hello Tayo. APICs can go anywhere you want them. The design guide is trying to give you a good option to minimize the loss of quorum if any pods should go offline or become unavailable. As far as remote APICs joining the cluster, make sure when you move them to other pods that you wipe them (acidiag touch setup). When you do the initial APIC setup process, make sure you answer the question about TEP pool to be the TEP pool from POD 1. All APICs must be setup to use the TEP pool from POD1, otherwise the cluster won't form. Just curious, what is driving the choice for 5 APICs? Nothing wrong with that, mind you. Are you deploying an extra large fabric and you need the scale?"