Paris

Figure 3-8 Actual Network Use for Paris Site

The network users at the Paris site consider e-mail, file transfer and access to the world wide web to be the most important uses of the network. The actual usage pattern is shown in Figure 3-8.

Using the data on network use and the user input, the network administrator designed the class hierarchy shown in Figure 3-9 and assigned the priorities and percentages of bandwidth shown in Table 3-1.

Figure 3-9 Class Structure for Paris Site

Table 3-1 Bandwidth Allocation and Priority of Classes on Paris Server

Class Description	Class Name	Parent Class	Percentage of Bandwidth Allocated	Priority
Root	root		100	1
http to Bonn	http-bonn	http	5	3
http to London or US	http-lon	http	10	3
http to elsewhere	http	root	20	5
telnet	telnet	root	30	1
System monitoring	snmp	root	5	1
e-mail	email	root	20	4
File transfer	ftp	root	15	7
Default	default	root	5	7

In batool and in the configuration file, you must specify the bandwidth allocated to a class and all its descendants. For example, the http-bonn and http-lon classes are both child classes of the http class. The http class and its decendents are allocated 20% of the bandwidth, of which the child classes are allocated allocated 5% and 10%.

With this configuration, the bandwidth used by FTP traffic is constrained to 15%, contrasting with the current usage figure of over 30%