Chapter Questions
Commercial vendors sell wireless routers for use in a home. Read about such routers. What processors are used? How many bits per second must such a router handle?
Approximately how many networks constitute the part of the Internet at your site? Approximately how many routers?
Find out about the largest router used in your company or organization. How many network connections does the router have?
Consider the internal structure of the example internet shown in Figure 3.4b. Which routers are most critical to correct operation of the internet? Why?
Changing the information in a router can be tricky because it is impossible to change all routers simultaneously. Investigate algorithms that guarantee to either install a change on a set of computers or install it on none.
In an internet, routers periodically exchange information from their routing tables, making it possible for a new router to appear and begin routing packets. Investigate the algorithms used to exchange routing information.
Compare the organization of a TCP/IP internet to the XNS style of internets designed by Xerox Corporation.