What is the Difference Between FDDI 1 and FDDI 2?

FDDI (Fiber Distributed Data Interface) is a data transmission standard for Local Area Networks (LAN) that uses fiber optic lines. It runs at 100 Mbit/sec on the fiber and can transport asynchronous traffic. FDDI-1, also known as the basic FDDI, is based on the token ring protocol. FDDI-2, also known as FDDI-II, is the second generation protocol of FDDI and is an extended version of FDDI-1. The main differences between FDDI-1 and FDDI-2 are:

1. Handling of Voice and Video Signals: FDDI-2 can handle voice signals and video, making it more suitable for large-scale Internet Service Provider (ISP) internet backbones.
2. Hybrid Mode: FDDI-2 has a new mode of operation called Hybrid Mode, which uses a 125-microsecond cycle to transport isochronous traffic in addition to asynchronous and synchronous types of frames.
3. Compatibility: FDDI and FDDI-2 stations can be operated in the same ring only in the basic FDDI mode.

Despite these differences, both FDDI-1 and FDDI-2 share some similarities, such as running at 100 Mbit/sec on the fiber and transporting asynchronous traffic.

Comparative Table: FDDI 1 vs FDDI 2

FDDI 1 and FDDI 2 are both versions of the Fiber Distributed Data Interface (FDDI), a data transmission standard for Local Area Networks (LANs). The key differences between FDDI 1 and FDDI 2 are as follows:

In summary, FDDI 2 is an extended version of FDDI that adds the capability to handle voice and video signals, as well as introducing a new mode of operation called Hybrid Mode for isochronous traffic transport.