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RE: [SLUG] Enabling DHCP Server
If you have 2 NICs in this machine, with an external one (160.78.24.3), plus
a private one (192.168.x.x) whose details you cut out from the ifconfig
output, try adding this to end of your /etc/dhcpd.conf:
subnet 160.78.24.3 netmask 255.255.255.0 { }
If you have one NIC in this machine, remove all the 192.168.x.x stuff from
the config & try setting up the /etc/dhcpd.conf along these lines (just as
long as you're *really* sure you want service the DHCP requests on this
subnet, because if not it can be a very quick way to ruin some network
administrator's day):
default-lease-time 600;
max-lease-time 7200;
option subnet-mask 255.255.255.0;
option broadcast-address 160.78.24.255;
option routers 160.78.24.254;
option domain-name-servers 160.78.24.1, 160.78.24.2;
option domain-name "ehelp.com";
subnet 160.78.24.0 netmask 255.255.255.0 {
range 160.78.24.10 160.78.24.50;
range 160.78.24.55 160.78.24.100;
}
This is my understanding of the situation as to why the above may help - the
DHCP server expects to find a 'subnet' section for every subnet that the
machine is set up for, irrelevant of whether or not it is supposed to
service DHCP requests on that subnet - and if it does not find a subnet
section, it gives the "No subnet declaration" error msg & bombs out. The
setup I have that works OK for me has a machine where the /etc/dhcpd.conf
is:
subnet 192.168.2.0 netmask 255.255.255.0
range 192.168.2.100 192.168.2.254;
option ip-forwarding off;
default-lease-time 864000;
max-lease-time 864000;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.2.255;
option routers 192.168.2.10;
option domain-name-servers 192.168.2.10;
option domain-name "examplanner.com";
option netbios-name-servers 192.168.2.10;
option netbios-dd-server 192.168.2.10;
option netbios-node-type 8;
option netbios-scope "";
}
subnet 10.0.0.0 netmask 255.255.255.0 { }
... and this is what my ifconfig shows:
eth0 Link encap:Ethernet HWaddr 00:00:93:84:44:9A
inet addr:192.168.2.10 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:172835 errors:0 dropped:0 overruns:0 frame:0
TX packets:143665 errors:0 dropped:0 overruns:0 carrier:0
collisions:71 txqueuelen:100
Interrupt:9 Base address:0x240
eth1 Link encap:Ethernet HWaddr 00:00:93:84:44:FF
inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:10 Base address:0x280
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:216 errors:0 dropped:0 overruns:0 frame:0
TX packets:216 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
You also can get a quick bit of info on DHCP at:
http://www.linuxdoc.org/LDP/LG/issue48/pollman.html
Cheers,
Nick.
-----Original Message-----
From: owner-slug@nospam.newtreno.spectrum.com.au
[mailto:owner-slug@nospam.newtreno.spectrum.com.au]On Behalf Of
Marko_Denev@nospam.lendlease.com.au
Sent: Saturday, 10 June 2000 5:16 PM
To: slug@nospam.slug.org.au
Subject: [SLUG] Enabling DHCP Server
Hi,
I am trying to set up dhcp server and have followed the DHCP Server setup
howto
but I Iam getting the following error message with trying to invoke the DHCP
server.
"No subnet declaration for eth0 (160.78.24.3)."
just to note. eth0 is set to 160.78.24.3
when i run ifconfig the following is displayed:-
Link encap:Ethernet HWaddr 00:60:08:65:0E:A8
inet addr:160.78.24.3 Bcast:160.78.255.255 Mask:255.255.255.0
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped :0 overruns:0 frame:0
collisions:0 txqueuelen:100
Interrupt:10 Base address:0x6000
and file /etc/dhcpd.conf contains the following:-
default-lease-time 600;
max-lease-time 7200;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.1.255;
option routers 192.168.1.254;
option domain-name-servers 192.168.1.1, 192.168.1.2;
option domain-name "ehelp.com";
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.10 192.168.1.50;
range 192.168.1.55 192.168.1.100;
}
Could anyone please explain what is missing/wrong.
Thanks
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