slow dhcp on 1G backbone.

[Blake Hudson]

-------- Original Message  --------
Subject: Re: slow dhcp on 1G backbone.
From: Glen R. J. Neff <neff_glen at emc.com>
To: Users of ISC DHCP <dhcp-users at lists.isc.org>
Date: Friday, July 24, 2009 11:30:55 AM
> On Fri, 2009-07-24 at 08:51 -0700, Dean Montgomery wrote:
>
>   
>> * HP Procurve 2810 core switch with 2610 switches in the classrooms.
>>     
>
>   
>> * No errors or overruns on ifconfig for both client and server.
>> * Any ideas why dhcp slows down when there is a 1G backbone?
>>     
>
> I'm not familiar with HP Procurve kit, but I really think you need to
> look at individual switch port configuration.
>
> I'm not saying it's broken, but often default settings will slow-down
> how fast a port initializes, thus running afoul of DHCP.
>
> -G
>   
I agree, diskless clients tend to come up too quickly for default 
spanning tree to initialize a port. Portfast on the access ports (ports 
where a diskless client connects directly) will likely resolve the issue.

-Blake
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