From: Ozgur Guler (Garanti Teknoloji) (OzgurG@garanti.com.tr)
Date: Fri Nov 14 2003 - 04:57:43 GMT-3
here is the link...
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12119ea1/3550scg/swvlan.htm#1150302
with the new code you can remove vlan 1 and 1002-1005.
Ozgur
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
R&S Groupstudy
Sent: Friday, November 14, 2003 9:59 AM
To: 'Ccielab (E-mail); Ozgur Guler (Garanti Teknoloji)
Subject: RE: vlan minimization
Please can you post the CCO link?
I was under the impression that vlan 1 could not be removed from trunk links
for the reason you specify below.
thanks
Adam
> ----------
> From: Ozgur Guler (Garanti Teknoloji)[SMTP:OzgurG@garanti.com.tr]
> Reply To: Ozgur Guler (Garanti Teknoloji)
> Sent: Friday, November 14, 2003 7:30 AM
> To: 'Ccielab (E-mail)
> Subject: vlan minimization
>
> hello group,
>
> cco says
> "To reduce the risk of spanning-tree loops or storms, you can disable VLAN
> 1
> on any individual VLAN trunk port by removing VLAN 1 from the allowed
> list.
> This is known as VLAN 1 minimization. VLAN 1 minimization disables VLAN 1
> (the
> default VLAN on all Cisco switch trunk ports) on an individual VLAN trunk
> link. As a result, no user traffic, including spanning-tree
> advertisements, is
> sent or received on VLAN 1. "
> isnt that statement somewhat contradictory by itself...
> it says "To reduce the risk of spanning-tree loops or storms"
> then it says no user traffic, including spanning-tree advertisements, is
> sent
> or received on VLAN 1.
> afaik, blocking spanning tree advertisement is "a reason" for spt loops.
> i would be happy if someone can shed some light on this one.
>
> Ozgur
>
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