[c-nsp] Not Trunking VLAN 1

Afsheen Bigdeli afsheenb at gravityplaysfavorites.net
Fri Jan 5 02:42:51 EST 2007


Hi,

In CatOS, there's a command to clear vlan 1 from the trunk, and of 
course you should be able to issue a "no spanning-tree vlan 1" if that's 
what your aim is, but aside from that, the reserved vlans (1, 1002-1005) 
cannot be removed. See 
http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/c2900sa4/sa4sc/masctrnk.htm, 
"Defining the Allowed VLANs on a Trunk".

In any case, you're probably served just as well by shutting down the 
VLAN1 SVI, and defining something else as your native vlan. If you're 
not using that vlan for anything, and it's shutdown, there shouldn't be 
any functional difference.

(Also: 12.0(5)WC16? On a 2900XL? Eeep.)

--afsheenb


  Kris Amy wrote:
> Hey Folks,
>  
> Just wondering if this is possible.
>  
> I tried doing it by 
>  
> switchport trunk allowed vlan 2-1005 and
> switchport trunk allowed vlan except 1
> 
> But neither seem to take affect.
>  
> This is on 
>  
> IOS (tm) C2900XL Software (C2900XL-C3H2S-M), Version 12.0(5)WC16, RELEASE SOFTWARE (fc1)
>  
> Cheers,
> Kris
> 
> 
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