LAN Basics
In this lesson, we will cover the fundamentals of LAN technologies. We’ll look at Ethernet, Token Ring, and FDDI. For each one, we’ll look at the technology as well as its operations.
Common LAN Technologies
The three LAN technologies shown here account for virtually all deployed LANs:
The most popular local area networking protocol today is Ethernet. Most network administrators building a network from scratch use Ethernet as a fundamental technology.
Token Ring technology is widely used in IBM networks.
FDDI networks are popular for campus LANs – and are usually built to support high bandwidth needs for backbone connectivity.
Let’s take a look at Ethernet in detail.
Fiber Distributed Data Interface (FDDI)
FDDI is an American National Standards Institute (ANSI) standard that defines a dual Token Ring LAN operating at 100 Mbps… Read More
Token Ring Operation
Station access to a Token Ring is deterministic; a station can transmit only when it receives a special frame called… Read More
Token Ring (IEEE 802.5)
The Token Ring network was originally developed by IBM in the 1970s. It is still IBM’s primary LAN technology and… Read More
High-Speed Ethernet Options
- Fast Ethernet - Fast EtherChannel® - Gigabit Ethernet - Gigabit EtherChannel We’ve mentioned that Ethernet also has high speed options that are… Read More
Ethernet Reliability
Ethernet is known as being a very reliable local area networking protocol. In this example, A is transmitting information and… Read More
Ethernet and Fast Ethernet
This chart give you an idea of the range of Ethernet protocols including their data rate, maximum segment length, and… Read More
Ethernet
Ethernet and IEEE 802.3 Ethernet was initially developed by Xerox. They were later joined by Digital Equipment Corporation (DEC) and… Read More