Lectures notes for 2010 - KTH

Address types
• Unicast = one-to-one
• Multicast = one-to-many
• Broadcast = one-to-all
32 bit address divided into two parts:
NetID
IP addresses
Figure 27: IP address format
Host ID
Note that although we refer to it as the Host ID part of the address, it is really the
address of an interface.
Dotted decimal notation: write each byte as a decimal number, separate each of
these with a “.” i.e., 10000010 11101101 00100000 00110011 ⇒ 130.237.32.51
or in hexadecimal as: 0x82ED2033
Maguire IP addresses 1: 89 of 104
maguire@kth.se 2010.03.21 Internetworking/Internetteknik