DHCP at hub over Frame Relay

[Pilot1]

We are weeks away from turning up a Frame Circuit with Qwest. We will have four locations tied together. The hub is in Omaha and other branches in Waterloo IA, Des Moines IA, and Lincoln NE. There is a Windows 2000 Server in Des Moines that will be joined to the same domain as two other Windows 2000 Servers in Omaha. Active Directory, DNS, and WINS are all employed. We made a decision to use one Win 2000 Server in Omaha to provide DHCP for all four locations. We will use four different subnets of 192.168.0.x through 192.168.3.x. One scope per location. I have hunted high and low about doing this. I know that the Cisco Routers we will employ will handle the routing of the DHCP requests from each branch. What baffles me at this point is how do we keep Omaha from being assigned addresses in the other subnets? This is probably obvious, but it's beyond me!! Thanks in Advance.

Pilot1

 

[peterve]

if your Cisco routers allow DHCP forwarding,
then create a scope for each location
Based on the subnet the LAN interface of the router is in, the Cisco router will request an address from that specific scope on your DHCP server, and pass it on to the client in that subnet
That will prevent computers from location A to receive addresses that were meant to be leased to computers in location B

If you really want to be sure, you could fill the scopes with MAC reservations (although this creates a lot of administrative work, this is the best solution...) I have not failed, I just found 10000 ways that don't work

Peter Van Eeckhoutte
peter.ve@pandora.be

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[Pilot1]

Thanks for your info. So maybe it would be best to set up those reservations for the hub location only? The rest of the addresses will be forwarded to the other branches via Cisco's (1720's), so I wouldn't have to worry about those?

Once again TIA

Pilot1

 

[peterve]

correct I have not failed, I just found 10000 ways that don't work

Peter Van Eeckhoutte
peter.ve@pandora.be

Did this post help ? Click below to let me know ;-)