Chapter 10
Fiber Distributed Data Interface (FDDI)
In this chapter we present information about a network technology called fiber distributed
data interface (FDDI). FDDI employs a ring topology with fiber-optic cabling as its physi-
cal layer medium. We also discuss a “sister” standard called copper distributed data inter-
face (CDDI), which uses copper instead of fiber. An outline of the terms and concepts we
define and discuss follows:
• General Information (Questions 1–6)
• Physical Layer Issues (Questions 7–10)
• Data Link Layer Issues (Questions 11–13)
• Operation and Configuration Issues (Questions 14–22)
• FDDI and Ethernet/802.3 (Questions 23–24)
• FDDI and ATM (Question 25)
• CDDI (Questions 26 through 28)
• Future of FDDI (Question 29)
1. What is ...