Sub Interface on Cisco ASA 5505

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May 14th, 2009
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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

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ray_stone Fri, 05/15/2009 - 02:14
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Can you explain briefly and give an example, if possible. Thanks

kafsavant Wed, 04/24/2013 - 06:27
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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.


Jouni Forss Wed, 04/24/2013 - 06:31
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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

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


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