Networking question if anyone can help

I have two networks with the following IP addresses (192.168.1.0/24 and 192.168.2.0/30) to which my virtual router is connected. I am using the Junos Network Operating System. Is it possible for me to specify the network which should be the traffic source of the system? Here is the situation: the destination of system traffic is 192.168.2.2 and the system traffic from the switches comes from 192.168.2.1.
Can I indicate the traffic source to be 192.168.1.1 which is then made known to all of the enterprise? I would rather not use the a/30 route to get the DHCP Relay working. Can you help me work it out?
