If you assign a port to a VLAN that doesn’t exist, the switch takes the
commands, creates that vlan and put the port in that vlan.




Cheers,

Farzad


On 20 August 2010 02:47, marc abel <[email protected]> wrote:

> I had made a typo configuring one of my switches and assigned an access
> port to a vlan that didn't exist on the switch. While trying to troubleshoot
> why I had no connectivity I noticed I had a one way CDP relationship. In
> other words I could see the router from the switch, but the router didn't
> see a cdp neighbor on the interface. Once I put the switchport in the right
> vlan I could see the switch.
>
> Could anyone explain why this happens? It might help me understand CDP
> better.
>
> Thank you,
>
> Marc
>
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>


-- 
Regards,
Farzad A. Cheema
--------------------------------
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