topic Create the "outside" interface on a subinterface? in Network Security

Create the "outside" interface on a subinterface?

campbech1 — Tue, 12 Mar 2019 00:17:50 GMT

So I have, what I think is an easy question, but I think I'm overthinking it. See, too many thinks..

I have a circuit that will be delivered to a client next week and we are installing an ASA 5585x for them. They will have a circuit coming in with a few VLANs configured on it. One VLAN for the Internet and one for connectivity to another client.

So does the ASA allow you to create the "outside" interface on a subinterface?

Thanks.

Create the "outside" interface on a subinterface?

Jennifer Halim — Fri, 02 Nov 2012 00:59:09 GMT

Sure can...

Just have to make sure that you don't have 2 default routes configured on the ASA going to 2 different interfaces. This is not supported.

Create the "outside" interface on a subinterface?

Javier Portuguez — Fri, 02 Nov 2012 01:08:02 GMT

Hi,

It would be a normal interface.

Further reference about subinterfaces:

Configuring and Enabling VLAN Subinterfaces and 802.1Q Trunking

Cisco ASA 5520 – Creating Subinterfaces

HTH.

Portu.

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