[Cialug] SOT: DHCP client address acquisition speed

Dave Weis djweis at internetsolver.com
Thu Feb 18 09:41:02 CST 2010


Delays like that are usually caused by spanning tree making sure you haven't made a loop. The command spanning-tree portfast should help. You don't see it in windows because the ethernet link has been lit for 30 second by the time it dhcp's. 

------Original Message------
From: Nathan C. Smith
Sender: cialug-bounces at cialug.org
To: 'cialug at cialug.org'
ReplyTo: Central Iowa Linux Users Group
Subject: [Cialug] SOT: DHCP client address acquisition speed
Sent: Feb 18, 2010 9:28 AM


What kinds of things on a network can affect the time it takes for a client to acquire a DHCP lease?

When I PXE boot it seems to take 20-40 seconds for a machine to get a lease, is that "normal"?  Windows machines seem to pick up leases in a reasonable amount of time.

Does the architecture of the network - number of switches, etc, have a bearing on the time to get a DHCP lease?

Thanks.

-Nate
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