Dave Miner wrote:
> Kyle McDonald wrote:
>> Hi All,
>>
>> Currently I have the Solaris DHCP server setup to answer PXE boot 
>> requests and allow machines to JumpStart or KickStart.
>>
>> I recently installed a new switch to increase capacity (ports and 
>> backplane) and I can't be sure if it happenned at the same time but 
>> the PXE boots seem to be behaving differently now.
>>
>> On one set of machines that are directly connected to the same switch 
>> that the DHCP server is connected to, the Broadcom PXE boot banner 
>> spins for a while and prints 5 '.' before getting an answer. On 
>> another set of machines that is actually 1 switch away it takes 3 '.' 
>> before a response is seen. I remember this process being much quicker 
>> in the past.
>>
>> This is all with no DHCP relaying, and all on the same subnet. Snoop 
>> for some reason doesn't show a 'discover' request until late also and 
>> shows an answer for the first request seen, so if the PXE rom is 
>> sending out requests the whole time the spinner is spinning, then I 
>> don't see them coming through on the server. Where could they be 
>> getting lost and why?
>>
>
> I would presume it's taking some time for link negotiation and STP.
>
Thanks Dave, and the other person who emailed me directly.

Enabling disabling STP on those ports by enabling 'portfast' solved the 
problem. Now I see 5 requests in snoop and debug output, 1 for each '.'. 
That's more like it!

  -Kyle

> Dave


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