From: Scott Morris (swm@emanon.com)
Date: Fri Aug 01 2008 - 21:10:01 ART
You are correct. If you dig into the spec for spanning-tree (original
802.1D) you'll find some formulas for determining the timers that are based
off of an assumed max diameter. If you change the diameter command you will
influence your timers.
It ranks up there with the idea of the 100meters length of twisted pair
ethernet cable. You CAN go longer, but you start getting some slightly
dysfunctional results in certain cases. ;) Same with STP.
HTH,
Scott Morris, CCIE4 #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al.
CCSI/JNCI-M/JNCI-ER
Senior CCIE Instructor
smorris@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Outside US: 775-826-4344
Knowledge is power.
Power corrupts.
Study hard and be Eeeeviiiil......
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Hobbs
Sent: Friday, August 01, 2008 5:32 PM
To: GS CCIE-Lab
Subject: Does "spanning-tree root primary diameter" really limit a number of
hops between hosts on an L2 network?
I got a task that said to limit the number of switches between hosts on an
L2 network. I knew what they wanted, but I don't like this wording at all.
There's no TTL in an ethernet header!
Blogs and organic groups at http://www.ccie.net
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