You probably should have just looked this up on CCO, as the first hit on
Portfast is what you want:
http://www.cisco.com/warp/public/473/12.html
You should always have portfast enabled on ports that link directly to
hosts. Also, if your switches handle it you could have BPDU guard on also to
prevent end users from hooking up spanning tree-aware switches on their own.
But it not just Macs that don't pick up an address when portfast is
off..basically anything that boots up and requests an IP faster than the
port switch does its spanning tree discovery stuff will NOT get an address.
Also on some switches you can speed up the ports initialization by turning
off trunking of any type and turning off etherchannel discovery.
Regards,
Andrew Metcalf
-----Original Message-----
From: Dominick DiGiorgio [mailto:techiedom@yahoo.com]
Sent: Tuesday, July 03, 2001 1:34 PM
To: cisco-nsp@puck.nether.net
Subject: portfast
Hi, what is the truth with macintosh machines in the
enterprise. Do you really need to run portfast on the
switches in order for the macs to obtain ip through
dhcp. How would portfast affect an isp distributing
ip through a cable or dsl network?
Dominick
techiedom@yahoo.com
=====
What are we going to do tonight Bill...
The same thing we do everynight Steve, try to take over the world....
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