This window appears when you click Advanced on the EIGRP tab of the IP Routing window. Use these tabs to configure advanced routing options for EIGRP:
When you finish configuring the routing options, click OK.
The Address Aggregation table shows all the aggregated supernets specified for all the interfaces in each process. Only the aggregated supernet will be advertised on the interface in the specified process.
Click Add to specify an aggregated network (IP adddress and mask) for an interface in a process in the New Aggregate Address window. The result of applying the mask to the network address is the address of the supernet.
To delete an entry in the Address Aggregation table, select the entry by pointing and clicking. Then click Delete.