Measurements and Observations of IP Multicast Traffic
				   
			     Bruce A. Mah
		      Computer Science Division
		 University of California at Berkeley
			 bmah@CS.Berkeley.EDU
				   
One of the latest developments on the Internet is the advent of
Internet-wide IP multicasting services, as supported by the MBONE
multicast backbone.  The most frequent applications seen on the MBONE
are so-called "multimedia" applications, such as the vic, nv, vat, and
wb conferencing tools.  These programs frequently generate network
data whose characteristics are very different from traditional bulk
data and interactive applications seen on the Internet, such as ftp
and telnet.  Understanding the network usage of these applications is
important in order to control and design networks.  This need is
particularly compelling in light of the increasing popularity of
multimedia applications.  In this talk we will present measurements
and observations based on traces of IP multicast traffic recorded at
the University of California at Berkeley in late 1993 and early 1994.