slow dhcp on 1G backbone.

[Blake Hudson]

-------- Original Message  --------
Subject: Re: slow dhcp on 1G backbone.
From: Blake Hudson <blake at ispn.net>
To: Users of ISC DHCP <dhcp-users at lists.isc.org>
Date: Friday, July 24, 2009 11:34:45 AM
> -------- 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
Actually, upon review the op stated he is only changing the server 
port... so client port initialization would not be affected by the 
server moving from 100MB or 1Gbit...
the issue still needs more investigation...
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