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Setting up 2 DHCP servers on 1 linksys wrt54g and RV082.

Posted on 2006-06-28
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Last Modified: 2011-10-03
I am in the process of setting up my LAN and I have a question regarding dual DHCP servers.

I am not going to run DHCP server on either of my Server 2003's.

However, I want to know if this is ok or if i will run into problems:

(1) I am going to set up the WRT54g hardwired into the RV082 but it is going to service wireless connections only. am going to set the IP policy to to only give out 50 IP addresses.

(2) The RV082 will only issue IP's if there is a hard wired connection for clients. All servers and equipment will be static ip's.

Am I thinking sanely or am i going to be in a would of hurt?

Thanks in advance...
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Question by:rpierson7870
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by:Rob Williams
ID: 17006590
A couple of thoughts:
A) Always best to use the server as a DHCP server when it is an option. This gives you more scope options, central management, and dynamically updated DNS for your local network.
B) You cannot have 2 DHCP servers on the same subnet. Are you going to put the wired and wireless units on different subnets? If so you will have to deal with routing traffic between the two if you want to share resources.
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Rob Williams earned 250 total points
ID: 17006618
If the goal is to have the two routers configured, you can easily do so using either the RV042 or the server as the DHCP server, the latter being the recommended method.
-disable DHCP for the LAN on the WRV54G
-do not configure the WAN section of the WRV54G
-assign the WRV54G an IP in the same subnet as the RV042, that does not conflict with your DHCP scope/range, or any static devices
-connect a wire from one of the LAN ports of the RV042 to one of the LAN ports of the WRV54G
-configure the wireless as normal
-if you wish to use the server for DHCP, disable DHCP on the RV042 as well.

All clients will get an IP in the same subnet, able to share resources, and able to connect to the Internet, and do so with a wire or wirelessly.
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by:Rob Williams
ID: 17006652
Thanks rpierson7870,
--Rob
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by:rpierson7870
ID: 17006667
The accepted answer is currently what I have set up now.

Probably not worth having the having a redundant dhcp server due to the small number of clients...

I think i might have router over kill...

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by:Rob Williams
ID: 17006677
>>"I think i might have router over kill..."
More power !!!!  <G>

It is common to use a basic wireless with the RV042, but the WRV54G is an excellent wireless unit so perhaps you do. But should work well.
By the way, both support VPN's, but if ever you set one up, better to use the RV042. Works a little better, more flexible, and it needs to be on the router closest to the Internet.
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