OK... Your DHCP client is outside the OSA and the server is using one of
the OSA interfaces. That should work.
You mentioned some /var/log/messages earlier. Those must have been in your
server, so you probably have messages indicating that the DHCPDISCOVER
arrived and a DHCPOFFER was sent to the client?
Do you have a workstation in that same broadcast domain with your DHCP
client and your OSA Express where you can run something like tcpdump to
monitor the network? You should certainly see the DHCPDISCOVER broadcast
from your client to the OSA, but if you don't see the DHCPOFFER back from
the OSA, you know the problem must be between the OSA and your server. If
you see the DHCPDISCOVER from another workstation (and it has the right
destination MAC) you know the problem is with the client.
Regards,
Dennis
----------------------------------------------------------------
Dennis Musselwhite ([EMAIL PROTECTED]) +1(607)429-3831
z/VM Development -- CP Network Simulation -- IBM Endicott NY
Max
<[EMAIL PROTECTED]
.it> To
Sent by: Linux on [EMAIL PROTECTED]
390 Port cc
<[EMAIL PROTECTED]
IST.EDU> Subject
Re: [LINUX-390] FW: DHCP Server on
zLinux doesn't work
10/14/2004 04:24
AM
Please respond to
Linux on 390 Port
Guys,
my DHCP client is a Windows2000. The Server is a
z/LINUX under z/VM but direct connected to an OSA.
The levels are:
KERNEL: 2.4.21-251-default s390x unknown
DHCP: dhcp-tools-1.2-107
dhcpcd-1.3.22pl1-65
dhcp-base-3.0.1rc9-53
dhcp-relay-3.0.1rc9-53
dhcp-server-3.0.1rc9-147
OSA: OSD Express card (level: 0334)
Any suggestions about MCL level?
Thank's in advance!
Max
--- Mark Perry <[EMAIL PROTECTED]> ha scritto:
> I can confirm what Dennis has already said.
> On SLES8 we use client dhcpcd and option "-B" (upper
> case) - will not work
> without it.
>
> All the Best
> Mark Perry
>
>
> > From: Dennis Musselwhite
> [mailto:[EMAIL PROTECTED]
> > Sent: 13 October 2004 18:02
> > To: [EMAIL PROTECTED]
> > Subject: Re: DHCP Server on zLinux doesn't work
> >
> <SNIP>
> >
> > In a shared port environment, the DHCP client
> should use the broadcast
> > flag
> > in the DHCPDISCOVER frame (usually option "-b" on
> the client command).
> > This asks the DHCP server to respond with a
> broadcast (instead of a
> > unicast) DHCPOFFER. The broadcast frame is
> delivered to every host in
> > your
> > broadcast domain, so you can count on it reaching
> the DHCP client.
> >
> > The bad news is that some dhcp implementations DO
> NOT support the
> > broadcast
> > flag. If your current dhcp package does not
> support the "-b" option you
> > may need to try a different package (or ask the
> developers to add
> > broadcast
> > support for the DHCPOFFER).
>
>
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