It certainly is possible to use a single DHCP server to serve multiple networks or network subnets, but keep in mind that it would need to serve a different IP address space to each subnet and/or network.
The DHCP server needs to be able to tell which subnet the request is coming from, so it knows which pool of addresses to use for which clients. This could also be achieved (perhaps even easier) by simply putting more ethernet ports in the DHCP server and physically attaching it to each network you want to serve IP addresses for. Have the DHCP server listen on each interface, and serve a different IP address space via each interface. The networks don't even need to be able to talk to each other in any other way (unless you want to share common resources like storage or printers or a common internet gateway). Jeff On Tue, 24 Sep 2002, Jason A. Pattie wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > dhcrelay? or dhcprelay? > > These are DHCP relay agents that are designed to allow a centralized > DHCP server that does not exist on all subnets of an organization to > receive all DHCP requests from all subnets. You would need to install a > DHCP relay in each subnet that then has access to the subnet in which > the DHCP server resides. There shouldn't be any need to run multiple > DHCP servers in this scenario. You just have to configure your > dhcpd.conf file correctly. > > For RedHat systems, the file to modify to start a DHCP server listening > on multiple interfaces is /etc/sysconfig/dhcpd. If you wanted to listen > on lo, eth0, and eth2, for example, you would set: > > DHCPDARGS="lo eth0 eth2" > > in that file. But if the DHCP server is only on one subnet, and you > have gateways/routers that are "bridging" their subnets with the subnet > the DHCP server is on, then you would only be listening on one interface > to begin with on the DHCP server. I.e., usually eth0. > > Joey Officer wrote: > > Depending on the dhcp server. I assume you mean that the server that you > > want to give an IP address for is on a different server. I'm not sure > > exactly. But one way to do this would be to run multiple dhcpd on > different > > Ethernet devices. Running different dhcpd.conf on each eth device would > > give you what you wanted with a single server. > > > > eth0=wan > > eth1=192.168.1.x > > eth2=192.168.2.x > > etc... > > > > this is pretty easy to setup, just need to setup multiple ethernet devices > > and run dhcpd from init with the options to specify the specific nic, and > > the corresponding dhcpd.conf file. > > > > --- > > > > or if you are talking about forwarding (tftp) requests to different > servers, > > the option to use in dhcpd.conf is "next-server ip.add.re.ss;" > > > > > > Hope that helps... > > > > > > > > Joey Officer > > Martin Apparatus, Inc. > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED]]On Behalf Of Maria > Backlund > > Sent: Tuesday, September 24, 2002 9:37 AM > > To: [EMAIL PROTECTED] > > Subject: [Ltsp-discuss] Forwarding dhcp request > > > > I wonder if there is a simple way to forward a dhcp request from a > > server on the local network to a server on a separate network? Thanks in > > advance! > > > > Maria Backlund > > > > > > ------------------------------------------------------- > > This sf.net email is sponsored by:ThinkGeek > > Welcome to geek heaven. > > http://thinkgeek.com/sf > > _____________________________________________________________________ > > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > > For additional LTSP help, try #ltsp channel on irc.openprojects.net > > > > > > > > ------------------------------------------------------- > > This sf.net email is sponsored by:ThinkGeek > > Welcome to geek heaven. > > http://thinkgeek.com/sf > > _____________________________________________________________________ > > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > > For additional LTSP help, try #ltsp channel on irc.openprojects.net > > > > - -- > Jason A. Pattie > [EMAIL PROTECTED] > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.0.6 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iD8DBQE9kIG3uYsUrHkpYtARAjMXAJ9xvwuRxaWpA5xz40T1VRt83M3qjQCdFVh5 > DzXCEBf+K0Sfg8wMS5bgtY0= > =ZzTl > -----END PGP SIGNATURE----- > > > ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.openprojects.net
