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Wifi Network Best Practices for DHCP and Router Setup

I'd like to get some suggestions as to the proper configuration for my network. I have a wired internet connection with 5 public IP addresses at my hub location where I have a router. I have three Ubiquiti wireless bridges connecting three other locations where I also have routers. The routers are all the same model. I need to provide internet connectivity to all four locations so I'm thinking that I should use DHCP on the LAN side of all four routers, including the one at the hub. I'm thinking that I need to seperate the networks so that I don't have address conflicts. Any advise on how to set this up would be greatly appreciated.

dallensworth

The traditional role of routers especially in a configuration with 3 or more sites is to act as a proxy forwarding the information to the DHCP server. This would create a centralized configuration where one DHCP server is responsible for managing and distributing addresses to the various subnets. On those routers acting as a proxy you would setup IP helpers so that the broadcast requests for DHCP would make it to the correct server. ie. 172.25.1.1 is your dhcp server

Router1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#interface Ethernet0
Router1(config-if)#ip helper-address 172.25.1.1
Router1(config-if)#exit

EricHoma

ASKER

In laymans terms? I guess I need to learn about IP Helpers...

I guess your saying that all DHCP addresses should be issued/controlled by the router that is attached to the wired WAN and that the other routers (one at each remote site) are only passing that IP through?

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dallensworth

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