[c-nsp] Blocking vlan 1 on trunked ports?

Joe McGuckin joe at via.net
Fri Jul 15 00:26:38 EDT 2005


3548XL-EN running:
   IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5)XU

I'm certainly willing to upgrade to a newer version.

Joe



On 7/14/05 5:41 PM, "robbie" <robbie at packetized.org> wrote:

> Brett Looney wrote:
>> At 08:13 15/07/2005, you wrote:
>> 
>>>> I know that you can't remove VLAN 1 from trunks on the 3550 but you can on
>>>> the 3750...
>> 
>> <snip>
>> 
>>> Yes, you can unequivocally remove VLAN1 from a trunk on a 3550. Unless
>>> I've just completely missed something.
>> 
>> 
>> <slaps forehead> You're right. I was being dumb. I was thinking of 3524,
>> not 3550. Many moons ago we had a 3550 at one end and a 3524 at the
>> other... D'oh...
> 
> Ah yes, 3524, the land before spanning-tree extend-system-id (and a
> myriad of other fun-filled features).
> 
> Back on topic, as far as I can tell, I would have to guess that the
> inability to remove VLAN1 from a trunk is a software support issue, not
> a hardware limitation. What is the switch in question, and what is it
> running for firmware?

-- 

Joe McGuckin

ViaNet Communications
994 San Antonio Road
Palo Alto, CA  94303

Phone: 650-213-1302
Cell:  650-207-0372
Fax:   650-969-2124




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