slow dhcp on 1G backbone.

[Dean Montgomery]

I've attached a wireshark capture on: udp port 68 and port 67
as well as syslog dhcp entries.

You will see 2 requests:
1) Once from bios for pxeboot.
2) Once from the kernel has loaded.



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I tried turning off spanning tree on the switches.  It still takes 12 or more seconds from the time the diskless client starts looking for an IP to the time that it actually gets one that it can work with.

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Windows machines are also affected by slow dhcp requests:
 ipconfig /release 
 ipconfig /renew
  .... wait .... wait ...  wait ...

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Another note - wake on lan is turned on on all the clients so the nic and switch link lights are always on.


-- 
Dean Montgomery
Network Support Tech./Programmer
dmonty at sd73.bc.ca
School District #73
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