I know CIDR can be used to aggregate multiple classfull networks. Is the use of supernetting recommended to "build" a larger network by changing the subnetmask of multiple class C networks. For example I could change the subnet mask on hosts in class C networks 192.168.1.0, 192.168.2.0, etc. from 255.255.255.0 to 255.255.248.0. I have done this on few PC (WinXP) and an ethernet interface on a router (ip classless) and each can ping the other. Is this a recommended approach? Any issues that this might cause?
I have this problem too.