a single subnet that is failing

[Aaron S. Thompson]

Hi All,

I have a single subnet that is failing and I could use a little  
assistance on finding out why. I have a couple hundred subnets that  
are working fine with 18,132 leases. Below is some key information on  
my setup.

My routers are properly relaying the udp broadcast and the dhcp box is  
seeing the request but hasn't matched it to the declaration. What  
other trouble shooting techniques I'm I missing?

Linux Version

[root at ns2 init.d]# uname -a
Linux ns2.berklee.net 2.6.9-55.EL #1 Fri Apr 20 16:35:59 EDT 2007 i686  
i686 i386 GNU/Linux

Two error's on start up. (I do have this config (DHCPDARGS=eth0) in / 
etc/sysconfig/dhcpd)

[root at ns2 init.d]# dhcpd restart
Internet Systems Consortium DHCP Server V3.0.1
Copyright 2004 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
Wrote 0 deleted host decls to leases file.
Wrote 0 new dynamic host decls to leases file.
Wrote 18132 leases to leases file.

No subnet declaration for restart (0.0.0.0).
** Ignoring requests on restart.  If this is not what
    you want, please write a subnet declaration
    in your dhcpd.conf file for the network segment
    to which interface restart is attached. **

Not configured to listen on any interfaces!

10.4.51.0 is NOT working and 10.4.54.0 is working.

   }
}
subnet 10.4.51.0 netmask 255.255.255.0 {
   #  Web Group
   option subnet-mask 255.255.255.0;
   option broadcast-address 10.4.51.255;
   option routers 10.4.51.1;
	pool {
	deny dynamic bootp clients;
    	range 10.4.51.30 10.4.51.254;
   }
}
subnet 10.4.54.0 netmask 255.255.255.0 {
   #4th Floor HR
   option subnet-mask 255.255.255.0;
   option broadcast-address 10.4.54.255;
   option routers 10.4.54.1;
	pool {
	deny dynamic bootp clients;
    	range 10.4.54.30 10.4.54.254;
   }
}

Log Error's

Nov 26 11:43:27 ns2 dhcpd: DHCPDISCOVER from 00:03:93:43:58:f0 via  
10.4.51.3: unknown network segment
Nov 26 11:43:27 ns2 dhcpd: DHCPDISCOVER from 00:03:93:43:58:f0 via  
10.4.51.2: unknown network segment
Nov 26 11:43:28 ns2 dhcpd: DHCPDISCOVER from 00:03:93:8a:5d:70 via  
10.4.51.2: unknown network segment
Nov 26 11:43:28 ns2 dhcpd: DHCPDISCOVER from 00:03:93:8a:5d:70 via  
10.4.51.3: unknown network segment

Thanks for taking the time!


Aaron
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