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can I supernet to save time

First time poster.

Our private network currently uses (subnet mask We're out of IP addresses. I would simply like to supernet and change our network to (subnet mask I know I'll be treating a class C range as a class B, but will it work? Research I have done so far says it will and it will save a lot of time. We have a Cisco PIX firewall.

1 Solution
only a couple of things that may hinder you but probably won't are:

1. Present or future VPN connections with other 192.168.x.x addresses won't work
2. Your broadcast address for the network has changed from to  Not a big deal, but something to keep in mind in case it breaks anything.

Also make sure that whatever is performing your NAT is also reconfigured.  If it's a firewall, you may have to alter the rules
You might consider going to /20 ( rather than all the way to /16.

Note that this is only legal because all of the 192.168.x.x subnets are reserved by RFC 1918.  If you were using, you could not make the analogous leap to

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