ACI Layer 2 Out VLANs

[ksherwood]

Hi,

when you set up the layer two out external bridge group you are asked to set up a VLAN pool.

Is this the real vlans from your existing brownfield network that you may want to use in the ACI or is this just a temporary range ?

Also, when you create the external EPG, is this a brownfield network VLAN or is this too just a temp ?

If these are both temps, how do you configure an ACI leaf port to reflect a brownfield network VLAN ?

Note: I have set up my layer 2 out port in my brownfield network N5K as a Trunk port.

Thanks.

[dpita]

Hello

Regarding the VLAN pool, it should contain all the VLANs in your existing network that you plan on trunking into the fabric. the VLAN pool then ties to a domain which will connect to your L2 out external bridge network. 

You create a single Ext Bridge Network per VLAN you want to extend. each L2 out can reference the same port to accommodate trunking to the external N5k in your case. The benefit here is that you are grouping your entire external VLAN into an EPG and you can restrict its access into services directly connected to the fabric. 

What other questions do you have? Thanks for using SupportForums!

ps) have you seen this document?

http://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c07-732033.html

[ksherwood]

Thanks Daniel, I have seen that doco but it's a bit full on.

If you don't mind could you or someone please vet my procedure attached ?

My test goal is to configure a leaf port, connect my laptop and PING back to the brownfield router.

[dpita]

Sorry for the late reply, i just answered on your other thread. linked you to the same document as well