From: Chuck Church (cchurch@xxxxxxxxxxxx)
Date: Fri Aug 30 2002 - 11:32:23 GMT-3
"Spanning stump"; I like it :)
Chuck Church
CCIE #8776, MCNE, MCSE
Sr. Network Engineer
Magnacom Technologies
140 N. Rt. 303
Valley Cottage, NY 10989
845-267-4000
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Jay Hennigan
Sent: Friday, August 30, 2002 1:15 AM
To: ccielab@groupstudy.com
Subject: RE:
On Wed, 28 Aug 2002, Bauer, Rick wrote:
> But what if the switches with their priority set to zero go away? The
switch
> that you did not want to be root becomes root (that does not equal never).
> The only way to guarantee (in older CAT IOS) that a switch will "never"
> become root for a VLAN is to disable SPT for that VLAN.
If all the other switches go away, you no longer have a spanning tree.
You have a spanning stump. It doesn't span anything.
Suppose your scenario has three switches in a triangle; A, B, and C.
The requirement is that neither B nor C become root. Would you suggest
disabling spanning tree on both of them? I didn't think so. Setting
priority to 32767 would IMHO fulfill the requirement. For small values
of never, it would. :-)
-- Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net NetLojix Communications, Inc. - http://www.netlojix.com/ WestNet: Connecting you to the planet. 805 884-6323
This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:48:42 GMT-3