Two DHCP server on the same network

[owaisfaisal]

Hi all

I am a simple and quick question for you all. I have just setup a new AD network in its own forest. No trust or anything like that setup. But both networks are on the same physical network (switch). There will not be two DHCP server publishing two differnent ranges of IP address. One will lease out 192.168.0.* and the other one will be 192.168.1.*. My question is this, is there a way to have the clients choose or predefine which DHCP server they go to to get TCP/IP info or is it first come first serve. Also would users with the IP address of 192.168.0.22 (an example) be able to ping a user with the IP address of 192.168.1.34

If not then how can I make this possible. Thank you for your help

Owais

 

[bradmg1]

This requires 2 subnets. I assume the switch is layer 3 capable? If so ip-helper (once set) per vlan will direct clients to the appropriate DHCP server.

If you are attempting to have 2 different subnets on the same VLAN your in trouble.

Jeffrey Botsford
MCSE/CCNA/Cyber Forensics L1

 

[WhoKilledKenny]

There will not be two DHCP server publishing two differnent ranges of IP address. One will lease out 192.168.0.* and the other one will be 192.168.1.*.

Ok I'm confused...

My question is this, is there a way to have the clients choose or predefine which DHCP server they go to to get TCP/IP info or is it first come first serve.[/qoute]
It is first come first serve. But, if you don't have an ip helper address as Brad mentioned, the DHCP broadcasts will not traverse the router. This means clients that are not on the same network or subnet as the DHCP server will never be herd.

It is not a bad idea to use two DHCP servers for redundancy. Set both up with the same scope and split the address pool up between the two DHCP servers. Much info on this can be found on the MS website....