Exactly which bits of the subnetted address are used for the network/subnet part and the host part is defined using an address mask, or netmask thus:
This says that 24 bits of the address are to be interpreted as "network part". For example, at Bendigo the "ironbark" UNIX system address is:255.255.255.0
Thus ironbark is addressed as:Address = 149.144.21.60 Netmask = 255.255.255.0
class B network: 149.144 subnet: 21 host number: 60
Lecture 11: The IP Protocol #1 | Copyright © 2004 P.Scott, La Trobe University Bendigo. |