FW: DHCPREQUEST Problem
dhcp1 at thehobsons.co.uk
Mon Apr 16 09:11:12 UTC 2007
DESEtech - Germán P. Santillán wrote:
>I have a ISC-DHCP Server v3.0.5 running on FreeBSD 6.2-p3 RELEASE, the
>logical network map is:
>DHCP-Server <---> Layer-2 Switch <---> Layer-2 Switch <---> Layer-2 Switch
>My DHCP-Client sends a DHCPDISCOVER message and my DHCP-Server answers it
>with a DHCPOFFER, that includes a IP Address of the Pool, but the
>DHCP-Client do not send a DHCPREQUEST message, but other DHCPDISCOVER
Have you looked in the list archives ?
Hard to say, but there are two common reasons :
1) The offer did not reach the client. I assume
you've checked that if you manually configure the
client then the network works correctly ?
2) The offer is in some way unacceptable to the client.
This is harder to determine as they generally
don't give you any clue. I once had a printer
which would not accept an address by DHCP - even
when I fixed the fact that it didn't request it's
subnet mask ! I found out a couple of years later
while looking for something else that it would
only accept a lease that was longer than 2 years !
First step is to look at the discover packets and
see what options the client is requesting - then
see if your server can provide them all. The
client probably will not need all the options,
but there may well be some that it requires - for
example if the client is a bootloader then it
can't go very far if you don't give it enough
information to download the image to be booted !
Other than that, try giving us some useful
information to work with. What is the client ? -
some clients have known foibles. What is your
dhcp server config ?
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