topic Re: Possibility of an IP in a physical interface and a subinterface ip in the same interface? in General Topics

Possibility of an IP in a physical interface and a subinterface ip in the same interface?

paloalto.nis — Wed, 28 Nov 2012 17:46:13 GMT

Hi all,

I need to reassure me on a simple configuration.

Is it possible to do this configuration?

IP interface 1: a.a.a.a / x
IP interface 1.10: a.a.10.a / x
IP interface 1.20: a.a.20.a / x

I ask this because I've seen a few configurations and whenever subinterfaces were used, there was no IP on the physical interface.

Thank you in advance for your return.

Re: Possibility of an IP in a physical interface and a subinterface ip in the same interface?

bvandivier — Thu, 29 Nov 2012 19:34:17 GMT

Hello, will the three example addresses you have specified need to be within the same subnet or three unique subnets?

It is not possible to have multiple layer 3 interfaces belonging to the same subnet within a single virtual router.

I was able to commit the following configuration example on a PA-200 without issue.

(disclaimer: I have not tested passing traffic with a corresponding trunked switch port connected to physical interface ethernet1/4)

Re: Possibility of an IP in a physical interface and a subinterface ip in the same interface?

paloalto.nis — Tue, 11 Dec 2012 14:26:52 GMT

Thank you for your help.