topic ASA 5512-X Trunking in Network Security

ASA 5512-X Trunking

petenixon — Tue, 12 Mar 2019 05:47:36 GMT

Hi all,

I'm looking for some clarification in reference to trunking on an ASA.

I have an ASA 5512-X with two 3750-X's connected to the inside and outside interfaces and I need to trunk between them. I can set up sub-interfaces and configure the correct vlans on the inside interface but cannot do the same thing on the outside interface (can't have the same vlan on multiple interfaces).

I am positive that this can only be achieved by configuring the ASA in transparent mode but would appreciate some clarification.

Thanks.

Hi,You are correct that this

Vibhor Amrodia — Fri, 17 Apr 2015 11:43:07 GMT

Hi,

You are correct that this would not be possible in routed mode as Sub-Interface cannot have the same VLAN configured.

Thanks and Regards,

Vibhor Amrodia

Thanks for the clarification

petenixon — Fri, 17 Apr 2015 11:53:38 GMT

Thanks for the clarification Vibhor.

That is a normal behaviour in

Ruben Cocheno — Fri, 17 Apr 2015 14:37:06 GMT

That is a normal behaviour in route mode.