ACI Ports implementation doubt.

[molinait]

Hi everyone.

I'm new working with ACI. I just implemented a few days ago that technology on a Data Center that runs all the servers in one vlan or subnet.

We configured 1 Application Profile, one Bridge Domain and one EPG. The ports range 1-40 on all Leaf switches are in vlan-1. Also I created I External BD to have connectivity beetween the ACI Fabric and the common network.

But yesterday we realized that there are 2 servers that are in other vlan. So my question is:

Can I use the same port on differente BD and EPG with a different encapsulation? Let's say vlan-2?

Thanks!

[RedNectar]

Hi molinait,

Firstly I would avoid using VLAN 1, just because VLAN 1 is univerally known as the default VLAN.

But to answer your question

Can I use the same port on differente BD and EPG with a different encapsulation? Let's say vlan-2

The answer is absolutely YES, all you have to do is make sure that you specify that the port is a Trunk port when you map VLAN-2 to the EPG, just as you would have done when you mapped VLAN-1 to its EPG

However, I have a sneaking suspicion that when you said "VLAN-1" you MAY have meant untagged - which of course is a totally differerent story.

So - IF you meant untagged, then what you will need to do to have both VLAN-2 and untaggged traffic arriving on the same port is:

1. Map the untagged traffic to the EPG using 802.1P encasulation
2. Map the tagged traffic to the EPG using Trunk encapsulation

I also suggest you search for a cisco aci tutorial that might give you some helpful concepts.

I hope this helps

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