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Old 11-18-2005, 03:34 PM   #1
psychobyte
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Registered: Sep 2003
Location: Central Coast, California
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Issues with Dualhome ISC DHCPD


Hi,

I was thinking of dual-homing a box to support dhcpd for 2 subnets. Does anyone know of any issues that might arise from this?

I suppose if I really had to I could use a dhcp helper on our router.
 
Old 11-18-2005, 04:03 PM   #2
Darin
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Registered: Jan 2003
Location: Portland, OR USA
Distribution: Slackware, SLAX, Gentoo, RH/Fedora
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ISC DHCPD is pretty smart on Linux when it comes to this. I had a system set up with two NICs on two subnets and all I did was set up a pool for each in the config and it automagically knew to give the right addresses out on the right subnets. It was even able to handle moving a system from one subnet to the next, knowing not to give it the wrong lease from the wrong subnet.
Code:
subnet 192.168.1.0 netmask 255.255.255.0 {
   option subnet-mask 255.255.255.0;
   option broadcast-address 192.168.100.255;
   option routers 192.168.1.1;
   option domain-name-servers 192.168.1.1;
   option netbios-name-servers 192.168.1.2;
   range 192.168.1.101 192.168.1.254; }

subnet 192.168.2.0 netmask 255.255.255.0 {
   option subnet-mask 255.255.255.0;
   option broadcast-address 192.168.2.255;
   option routers 192.168.2.1;
   option domain-name-servers 192.168.2.1;
   option netbios-name-servers 192.168.2.2;
   range 192.168.2.101 192.168.2.254; }
 
  


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