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Re: Re: VLAN 1, if not used, is safe to shutdown (trunk disallow) always ? posted 12/27/2006

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Subject: Re: Re: VLAN 1, if not used, is safe to shutdown (trunk disallow) always ?
From: johngibson1541@xxxxxxxxx
Date: Wed, 27 Dec 2006 15:54:34 -0500
In-reply-to: sympa.1167181868.29733.744@groupstudy.com

It looks like in Cisco PVSTP+ it sends BPDUs with tags and without tags (duplicate packets).

http://puck.nether.net/pipermail/cisco-nsp/2004-March/009079.html

So, when all switches are Cisco it is pretty safe to disallow vlan 1, if STP is in concern.

Next question is if it is still safe with MSTP.


John

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