class c networks

[carl_townshend]

how many different networks can you have with a 24 bit/classs c mask ?

[mtumanov123]

2^24-2 (zeros and ones are excluded)

[carl_townshend]

Is this hosts or networks ?

[mtumanov123]

networks.

hosts 2^8-2 per network

What are you asking about? Is it a theoretical question "how many class C networks are there in IPv4" or you need to split your class C network into smaller subnets?

[carl_townshend]

I am a little bad on this subnet stuff. I really want to learn it, Why do people subnet ? and can someone please give me an easy explantion and example ?

hope someone can help !!

[mtumanov123]

You should buy a book. I recomend this one

http://www.ciscopress.com/title/1587052024

because subnets worth nothing without routing

[baldy]

In reply to your actual question, if you give the class C a 255.255.255.255 mask you have a host specific address. You can do this 256 times but you wouldn't be able to use .0 or .255 so you get 254 usable "subnets".

Of course these subnets are only usable as loopback addresses, but you can do it!

The practical answer is 64 subnets of 4 addresses each - with the usual restrictions on first and last addresses.