My network currently uses a Cisco PIX 515E with an internal layer 3 switch and we are going to be implementing NAT on the PIX. Our inside network will be 192.168.0.0 that will translate to a pool consisting of 5-6 class C networks.
I would like to use more than 1 subnet mask to chunk up the 192.168.0.0
255.255.255.0 will be used for my smaller vlans and I would also like to use 255.255.248.0 for two of my large vlans.
So my question is, Can I use both subnet masks as long as they do not overlap?