Comparing IP routing tables

Does anyone know if there is a easy way to compare two large IP routing tables
for IP address conflict, each IP routing table has over 5000 routes. For
example if company A acquires company B and wishes to migrate company B into
its VRF. Company A would like a detailed report of the IP address conflicts
between itself and company B.

Can anyone suggest what is the easiest way to approach this. I have thought of
importing the routing tables in Excel into each column and writing a Macro to
compare the two columns. But this seems like a tedious task.

Is this the best way or can anyone suggest a faster better way?

Thanks in advance !

IS

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Received on Sun May 09 2010 - 19:51:59 ART