802.1q encapsulation on cisco 6509

mutabaruka1 · ‎01-13-2010

I have the following configuration on

Cisco 6509:

int gig xx/xx

switchport

sw acc vlan xx

Now, I want to make this int a trunk port.

When put the command: sw tru enc dot1q, it gives me the "Unrecognized command" error. Anybody got an idea on how I can fix this?

Thanks.

Jon Marshall · ‎01-13-2010

mutabaruka1 wrote:

I have the following configuration on

Cisco 6509:

int gig xx/xx

switchport

sw acc vlan xx

Now, I want to make this int a trunk port.

When put the command: sw tru enc dot1q, it gives me the "Unrecognized command" error. Anybody got an idea on how I can fix this?

Thanks.

What module is this on. Some modules only support 802.1q encapsulation on the ports so you do not get the choice between ISL/802.1Q.

Jon

mutabaruka1 · ‎01-13-2010

Jon:

It is on 6509-E. Anyway, I should be able to choose 802.1q. But when I start the command sw tr ? , encapsulation is not an option.

Jon Marshall · ‎01-13-2010

mutabaruka1 wrote:

Jon:

It is on 6509-E. Anyway, I should be able to choose 802.1q. But when I start the command sw tr ? , encapsulation is not an option.

Some of the modules only support 802.1Q on the ports. What module is it ? I know it is on a 6509 but what exact module is it ? If you are not sure can you

1) specify the exact port you are trying to configure eg. gi5/1

2) post the output of "sh module" from the switch

Jon

glen.grant · ‎01-13-2010

Try show interfaces capabilities and see if dot1q is the only supported protocol, if so then it probably won't let you set it . On 2950's which only support dot1q it is not configurable.

mutabaruka1 · ‎01-14-2010

So, if dot1q is the only supported protocol that means it is the default? if I trunk the interfaces they would use 802.1q?

Jon Marshall · ‎01-14-2010

mutabaruka1 wrote:

So, if dot1q is the only supported protocol that means it is the default? if I trunk the interfaces they would use 802.1q?

Yes.

ccie_rooky · ‎01-14-2010

Thanks guys. That really helped.