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Thread: dhcp server

  1. #1

    dhcp server

    i am trying to set up a dhcp server for a small network... i have gone through all the steps in this website but every time i try starting the service it says failed any ideas what to do?
    ps i am using FC4

  2. #2
    Good Guru
    Schotty's Avatar
    Join Date
    Jul 2001
    Milwaukee, WI
    Is the firewall set to allow the ports for DHCP?

    Plus, can you copy the exact error into your post if the firewall is not the culprit. That way we can see what the problem is. Plus DHCP shoul dhave an error log, post any relavent info from there.

  3. #3
    were would the error log file be made i looked under /var/log...
    and i dont think i am having a problem with a firewall becauses that is not running yet

    the program is not even getting past the spot were i type "service dhcpd start" i will comeback and say failed in that nice red lettering it has

  4. #4
    Good Guru
    Compunuts's Avatar
    Join Date
    May 2001
    Did you check whether you have leases file under /var/lib/dhcp/dhcpd.leases ? If not create one with

    touch /var/lib/dhcp/dhcpd.leases
    LinuxVillage - The truely community run Linux/Floss forum !

    No IT BS !!

  5. #5
    yah there was all ready one in that file....

  6. #6
    For anyone who wonders this is my sript it works....
    # dhcpd.conf
    # Configuration file for ISC dhcpd (see 'man dhcpd.conf') 
    ddns-update-style none;
    subnet netmask {
       default-lease-time 3600; max-lease-time 3600;
       option subnet-mask;
       option routers;
       option domain-name-servers,;
       option domain-name "aliant.lan"; }
    ps to get error codes out of the dhcpd server start it like this
    dchpd eht1
    it gives out errors that you might have

  7. #7
    Join Date
    Jan 2005


    From what i Understand DHCP to be is a little bit different from your configuration. To start u have to configure your server with NAT and try to see if clients can browse by connecting to the NAT server. After that u then configure your DHCP in the same NAT server and let the eth1 IP be the same with the RANGE of the DHCP server. Assign and IP to the clients and later try DHCP on the clients and see if u can get a good result.

    One thing u should remember is that u have to use Private IP and not your which is a public IP addresss. try to use something like this si a private IP.



  8. #8
    Good Guru
    Schotty's Avatar
    Join Date
    Jul 2001
    Milwaukee, WI
    You can configure DHCP on a NAT server, but are by all means not required. In the DHCP configuration, you can push an IP out to any system for:

    Default Gateway

    Refer here:
    Red Hat's Docs

  9. #9
    1 Make sure it isnt running


    If it is, it is likely a firewall causing headaches. Open (If I remember right) port 67 udp/tcp. If it isnt running continue.

    2 start dhcpd from the command line (use your distro's path to the file)

    /usr/sbin/dhcpd -t

    This will test your config file, it should tell you a line number it is chocking on.If it is choking on something, fix it. If everything checks out then continue.

    3 start dhcpd from cli

    /usr/sbin/dhcpd -fd

    This will run dhcpd on the command line, you should be able to see what is going on.

    Good luck

    Last edited by flashingcurser; 04-09-2006 at 04:52 PM.

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