Assigning specific IP address

[Cerati]

Can anyone help me with this one ?

I've got a Cisco 2621, running IOS 12.2, with an 8 port analog module.

Ethernet 0 is using an ip of 172.22.10.1 and Ethernet 1 is using an ip of 172.19.10.1. The default gateway is our firewall.

The router has two purposes in life (or would if I could get it working !). The first is to provide remote access for our employees via dialback, and assign them an address in the range of 172.22.10.x from a DHCP pool. That works fine.

However, the router also has another function - and that's to provide disaster recovery to some of our clients. The ethernet 1 interface goes into a hub, into which is also plugged the DR box.

What we ideally want to happen is for anyone who dials in with a username we've assigned for disaster recovery to get a 172.19.10.x address and for everyone else to get a 172.22.10.x address from the pool.

That way we can make sure our firewall doesn't allow the clients onto our LAN.

So........is there any way to do this ?

We don't have any tacacs or radius servers available to use btw.


Thanks.