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Ip addresses

Can we use the ip address 192.168.2.1/16 or 172.16.1.1/8 and if yes what's the purpose of the Classes of ip addresses, A,B,C.

Thanks

moses

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Re: Ip addresses

moses

It depends somewhat on how your router (or switch) is configured. But in general the IOS does not have a problem with 192.168.x.x/16 or with 172.x.x.x/8. These are both examples of what is generally called a supernet. A supernet applies a mask to addresses that is shorter than the "natural" or default mask for a network. supernet is one of the concepts of CIDR (Classless InterDomain Routing).

The specification and use of Class A, Class B, and Class C addresses is an older way of organizing and managing IP addresses. CIDR is a newer way or organizing and managing IP addresses and it is one component of classless routing, which is the newer and more sophisticated approach to IP routing.

HTH

Rick

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