New Subnet

[jayr0]

I am running NT4 Sp6 & I have added a new subnet to our network. I have a wins server, Dns, Dhcp (7day lease) & cisco routers in place. When a laptop is attached to the new subnet (IP: 10.100.x.x) everythings works fine (dhcp assigns the IP). However, when the user goes to another floor the new 10.100 IP doesn't allow them to log on. The other floor is on another subnet (132.1.x.x). Therefore, I have to release the IP and renew & the Dhcp assigns a new IP from 132.1.x.x & everything is fine.

Any suggestions??

 

[peterve]

Why would you implement different IP ranges, if you have users that are really 'roaming' all the time between the two floors...
Anyway, If you want to make sure your laptops are getting the right IP address, you will have to shut them down, go to the other floor, and restart them... this should work just fine....
If it doesn't, the only thing he can do is release & renew... Peter Van Eeckhoutte
peter.ve@pandora.be

 

[gbuyers]

Have you enabled the UDP helper on your Cisco router? Check Cisco's web site for more info.

UDP Helper allows you to send User Datagram Protocol (UDP) packets between routed networks. It provides support for UDP services such as BOOTP and DHCP (Dynamic Host Configuration Protocol), which rely on the BOOTP relay agent.

When you configure the logical BOOTP port, you can boot hosts through the router. UDP Helper also provides a relay agent for DHCP broadcasts. UDP packets that rely on the BOOTP relay agent are modified and then forwarded through the router.