ASA 5515 Transparent and Multi context and VLAN

[mahesh18]

Hi everyone,

On ASA  5515  it shows it is in transparent mode  and it has multi context.

As in transparent ASA  we know it has single Management IP address.

This ASA is connected to  one switch  on two ports gi2 and gi3.

One port carries vlan say 800  to the ASA.Other port carries vlan 500 from the ASA  to switch

But when i log onto ASA  and do sh run it shows no VLan info there.

Need to know is this default behaviour that ASA does not show any vlan info in it ?

Thanks

Mahesh

[Julio Carvajal · Accepted solution]

Hello Mahesh,

The ASA is in transparent mode but it's still a firewall, it will populate a cam table but it does not have a vlan.dat table as a switch does so you will not see that information.

I would say that what you need to focus on is on how an ASA works while it's on transparent mode,

I mean as a switch it will learn MAC addresses when it receives a  packet from each source but you will not configure any Vlan info into the ASA,

Regards

[mahesh18]

Hi Julio,

I figure this out.

This ASA  has multiple contexts in transparent mode.

I was logging into non admin context thats why i was unable to see the vlans on it.

On system context when i do sh vlan it shows all the Vlan on the ASA.

Regards

Mahesh

[Julio Carvajal]

Hello Mahesh,

Glad to see you have it up and running,

Regards