calculation of the broadcast address of the subnet is a vital part of the process. As mentioned
earlier, there are two reserved numbers in each network or subnet. One number is the network
number or subnet number, which is used to represent the entire network or subnet. The other
reserved number is called the broadcast address. This number is used to represent all IP
addresses in the network or subnet. The broadcast address is used when a packet must be sent
to all hosts in a network or subnet. All hosts receiving the packet should notice that the packet
is destined for their own network or subnet broadcast address and then process the packet.
structure for a network. Take a look at the following definition:
broadcast address is the largest value numerically in that network/subnet. The valid,
assignable addresses in that network are the numbers between the network/subnet number
and the broadcast address.
Subnetting
same algorithms for deriving the subnet numbers. The algorithms used for basic subnetting are
used as a basis for the following algorithms for deriving the broadcast addresses. First, the
decimal algorithm is as follows:
decimal numbers of the address, based on whether the subnet
mask is 255.0.0.0, 255.255.0.0, or 255.255.255.0, respectively.
255.
3 directs you to plug in 255 instead of 0. Some examples follow in Table 5-18.
Subnet Part (Step 2)
(Step 3)