[nsp] Can I disable VLAN1 on a 2900XL?

Dowd, Everett Everett.Dowd at ost.dot.gov
Mon Aug 25 16:11:56 EDT 2003


Yes, it is pretty easy and all you need to do is have the most recent code
(I think 12.0.WC5 will work) and an 8M switch to change the native VLAN. 

All you need to do is create a new vlan and then when you trunk to a router,
just assign the sub-interface to the new native VLAN.

Here is my example...

interface Vlan1
 no ip address
 no ip route-cache
 shutdown
!
interface Vlan2
 ip address 10.1.1.2 255.255.255.0
 no ip redirects
 no ip route-cache
!

Router config
interface FastEthernet0.2
 description main link for management and subnets
 encapsulation dot1Q 2 native
 ip address 10.1.1.1 255.255.255.0


HTH


Everett


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Dan Salekin
Sent: Monday, August 25, 2003 1:27 PM
To: 'Michael Loftis'; cisco-nsp at puck.nether.net
Subject: RE: [nsp] Can I disable VLAN1 on a 2900XL?


Can I change the default VLAN and remove VLAN1 from the configs?

thanks,
Dan

-----Original Message-----
From: Michael Loftis [mailto:mloftis at wgops.com]
Sent: August 25, 2003 11:23 AM
To: dan.salekin at terago.ca; cisco-nsp at puck.nether.net
Subject: Re: [nsp] Can I disable VLAN1 on a 2900XL?


No.  VLAN1 (well actually the default VLAN ont he trunk interfaces 
usually....) carries the spanning tree traffic and other important 
makes-your-network-work stuff.

--On Monday, August 25, 2003 10:23 AM -0600 Dan Salekin 
<dan.salekin at terago.ca> wrote:

> Is it possible to completely disable VLAN "1" on a 2900XL switch?
>
> I've recently experienced some down time, a broadcast storm, which I 
> believe is related.
>
> I do have the VLAN interface shutdown on all switches, although the 
> trunked ports are allowing VLAN1.
>
> thanks in advance,
> Dan
>
>
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