[FW1] Nokia RIPv1 and subnets

["Felicetti, Stephen A." <SA_Felicetti@FW1-NOSPAMfccc.edu>]

This is more of an informational message about something I encountered while
configuring RIPv1. As it turns out this problem is a limitation of the RIPv1
protocol, not the Nokia or FW-1 product. I thought it would be useful in
case anyone try's what I did, and spent a day trying to figure it out....

I have an IP440 with 4 ethernet interfaces. In order to cut down the amount
of available networks on each leg, I had originally used different subnet
masks for each interface.
I then found out that RIPv1 doesn't support different subnet masks on the
same router, so I had to make them all the same. This wasn't a problem, as
we have plenty of IPs to go around. Once I made the change, everything
worked nicely together.

However, if your situation is different and you must subnet, you have to use
a different routing protocol, or switch to RIPv2. Due to our existing
network setup, we weren't able to switch.

Thanks,
Steve Felicetti

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