Teach me Wan and DHCP

[ahhgeez]

How do remote sites pull DHCP addresses from different scopes. For example:
I was working at a site with three sites. The corporate location has a Windows 2000 dhcp server with three scopes:

192.168.3.0-Corporate
192.168.4.0-Remote 1
192.168.5.0-Remote 2

All sites are currently connected with cisco routers. Over the weekend I did a Windows 2000 to Windows 2003 Migration. Today I got a phone call that the remote sites could not obtain a ip address. I quickly disabled the dhcp service on the 2003 box and enabled it on the 2000 and everything started to work fine. Is there settings in the cisco that points the sites to the correct scopes? Your help is appreciated.

 

[IllogicallyLogical]

You should check the router settings at the remote sites and change the DCHP Relay Agent settings so that they are forwarding DCHP requests to the IP address of the new DHCP server. Do a show run command and look for the ip helper-address command and make sure they are forwarding the DHCP requests to the IP of the new server.

Check out these links for more info on configuring DHCP Relay Agent settings on Cisco routers.

http://www.ciscopress.com/articles/article.asp?p=330807&seqNum=9&rl=1

- Configuring the Cisco IOS DHCP Relay Agent

http://www.cisco.com/en/US/products..._guide_chapter09186a00804412bf.html#wp1096452

Joey
A+, Network+, MCP, Wireless#