Thanks for your help Michael.  After looking up "stanza" in the dictionary,
I looked at /etc/rc.d/init.d/dhcpd and near the top it lists
/etc/sysconfig/dhcpd as a source file.  So I changed DHCPDARGS= to
DHCPDARGS=eth1 in /etc/sysconfig/dhcpd and the system has stopped causing
the problem.  Also, in /var/log/messages the restart shows it's only
listening and sending on eth1, whereas with "DHCPDARGS=" /var/log/messages
reported dhcpd listening AND sending on both eth0 and eth1.  It's been back
on line for a day and no one from the network has yelled at me, so I guess
that fixed it.  

Dennis Gurgul
Massachusetts General Hospital
Research Management
617.724.3169

> -----Original Message-----
> From: Michael Chase-Salerno [SMTP:[EMAIL PROTECTED]]
> Sent: Monday, August 05, 2002 4:02 PM
> To:   Gurgul, Dennis J.
> Cc:   'Oscar-users'; Davidow, Lance S.
> Subject:      Re: [Oscar-users] dhcpd causing problems on eth0
> 
> Hi,
> 
> Ok, I've done a bit of research on this and I understand what you are
> saying now. dhcpd will indeed send NACKs for those blank subnets, sorry
> I doubted you ;) This isn't the way we thought it worked. There appear
> to be a couple of ways around this. 
> 
> 1) Edit the init script to add the cluster interface name to the line
> that spawns dhpcd in the "start" stanza. This will restrict it to that
> interface. Then just restart the service "service dhcpd restart"
> 
> 2) On newer versions of dhcpd (3.0+) supposedly if there is no stanza
> for a subnet, it will ignore it. If you have a version that this should
> work on, just remove the blank stanza that we create and restart the
> service. If you try this, let me know if it works.
> 
> Mike
> 
> On Mon, 2002-08-05 at 11:16, Gurgul, Dennis J. wrote:
> > Hi, 
> > 
> > Have a small (2 client node) cluster using 1.3 on RH 7.2.  On eth0, the
> > connection to the outside, the OSCAR server is issuing negative
> acknowledgement
> > responses to systems requesting dhcp from the legitimate dhcp servers on
> our
> > enterprize system.  
> > 
> > There is a line in /etc/dhcpd.conf that, according to the comment in the
> file,
> > is supposed to make the dhcpd ignore dhcp requests.  The comment line
> says,
> > "This entry ignores requests on eth0...."   But, apparently the system
> is
> > keeping legit requests from being answered by the primary dhcp servers
> on our
> > network.  
> > 
> > Does the OSCAR server really have to run dhcpd?  Or is there some other
> config
> > for /etc/dhcpd.config?
> > 
> > Thanks.
> > 
> > Dennis
> > 
> > Dennis Gurgul
> > Research Management
> > 617.724.3169
> > [EMAIL PROTECTED]
> > 
> > 
> > 
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> 


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