troubleshooting Question

DHCP multiple subnets

Avatar of ChrisAlavoine
ChrisAlavoine asked on
Linux NetworkingDHCPTCP/IP
8 Comments1 Solution1770 ViewsLast Modified:
Hi there,

I have inherited a /24 network which is rapidly running out of IP addresses.

I want to do some subnet separation and need some dhcpd.conf advice.

We have a Cisco ASA 5510 controlling all the routing and an Ubuntu 8.04 Domain Controller running dhcpd to give out addresses.

I would like to keep the existing subnet for statically assigned servers and add several more /24 subnets for Phone, DHCP pool and VPN (this is already implemented on the ASA).

This is my current subnet declaration in dhcpd.conf:

subnet 192.168.16.0 netmask 255.255.255.0 {
  option domain-name            "blahblah.co.uk";
  option routers                192.168.16.1;
  option subnet-mask            255.255.255.0;
  option broadcast-address      192.168.16.255;
  option domain-name-servers    192.168.16.3;
  option ntp-servers            192.168.16.2;
  option netbios-name-servers   192.168.16.2;
  option netbios-node-type      8;

  range 192.168.16.32 192.168.16.235;

  option option-176 "MCIPADD=192.168.16.11,MCPORT=1719,TFTPSRVR=192.168.16.28";
}

I would welcome any suggestions on the best way to achieve this. It's been a while since I've done any advanced dhcpd.conf work.

Thanks in advance,
c:)
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