Sub Interface on Cisco ASA 5505

ray_stone · ‎05-14-2009

Hi Experts, Can we make sub interface on Cisco ASA 5505 model and if its possible then do that interface need to be upgraded into Trunk Port. Pls explain briefly. Thanks

andrew.prince · ‎05-15-2009

No - it's not possible, with a basic license, you need a Security Plus license.

HTH>

ray_stone · ‎05-15-2009

Yes, we have Security Plus License installed.

andrew.prince · ‎05-15-2009

the just create a sub interface on the physical interface that connects to a trunk port:-

interface ethernet 1.1

vlan <>

HTH>

ray_stone · ‎05-15-2009

Can you explain briefly and give an example, if possible. Thanks

andrew.prince · ‎05-15-2009

See my previous post - explanation & example already provided.

Maykol Rojas · ‎11-03-2011

Model Guidelines

Subinterfaces are not available for the ASA 5505 ASA

http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/intrface.html

Mike

kafsavant · ‎04-24-2013

I have been working on a configuration in which I wanted to do subinterfaces as well. I found that you can not create them even with having a security plus license.

Keith

Jouni Forss · ‎04-24-2013

Hi,

To my understanding you only configure Vlan interfaces on the ASA5505 just like a L3 Switch.

For example

interface Vlan10

nameif LAN

security-level 100

ip add 10.10.10.1 255.255.255.0

interface Ethernet0/1

switcport access vlan 10

Then you either make physical ports on the ASA5505 as Access Mode ports on that Vlan ID or configure a physical interface as a Trunk

Configuring the Trunk will require the Security Plus License.

- Jouni

Peter Long · ‎07-18-2015

Sub interfaces are available on all ASA models and Next Gen Models EXCEPT the ASA 5505.

Cisco ASA 5500 - Sub Interfaces and VLANS

Pete