> 
> OTOH, that still does not explain why 250 computers in eight
> different
> offices were all hitting the same DHCP server. The reason I
> know it to be
> true is that I had different scopes on each of the two servers.
> For example
> 192.168.4.50 through 150 on one server and 192.168.4.151
> through 250 on the
> other.
> 

It is almost definite that one box will, for various reasons, be 'faster' in
responding, and hence be the machine that is handing out the leases because
the client will except the offer from the first server that makes said offer.
This could be due to network connectivity, cpu utilization, internal bus
speed differences (minor ones at that!), etc, etc.  One machine will always
be faster even if it is a minor bit.

I am very familiar with exactly such scenarios, and it has always been my
experience that it will still continue to function properly.
If the first server runs out of addresses in it's scope that it can offer,
then he won't offer anymore, but the second one will, and that range will
then begin to get used.

As far as the 'ip helper-address' issue.  If you have numerous (host
specific or not) such 'ip helper-address' statements, a DHCP broadcast
received on an interface will be then sent to each and every one of them. 
This definitely works.  (hint: ip helper-address is NOT just for DHCP/BOOTP)

Good Luck!



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