This chapter is from the book
This chapter is from the book
This chapter is from the book
Current Ethernet Technologies
Refer back to Figure 28-1 and notice the different 802.3 standards. Each new physical layer standard from the IEEE requires many differences at the physical layer. However, each of these physical layer standards uses the same 802.3 header, and each uses the upper LLC sublayer as well. Table 28-1 lists today’s most commonly used IEEE Ethernet physical layer standards.
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Table 28-1. Today’s Most Common Types of Ethernet
|
Common Name |
Speed |
Alternative Name |
Name of IEEE Standard |
Cable Type, Maximum Length |
|
Ethernet |
10 Mbps |
10BASE-T |
IEEE 802.3 |
Copper, 100 m |
|
Fast Ethernet |
100 Mbps |
100BASE-TX |
IEEE 802.3u |
Copper, 100 m |
|
Gigabit Ethernet |
1000 Mbps |
1000BASE-LX, 1000BASE-SX |
IEEE 802.3z |
Fiber, 550 m (SX) 5 km (LX) |
|
Gigabit Ethernet |
1000 Mbps |
1000BASE-T |
IEEE 802.3ab |
Copper, 100 m |
|
10GigE (Gigabit Ethernet) |
10 Gbps |
10GBASE-SR, 10GBASE-LR |
IEEE 802.3ae |
Fiber, up to 300 m (SR), up to 25 km (LR) |
|
10GigE (Gigabit Ethernet) |
10 Gbps |
10GBASE-T |
IEEE 802.3an |
Copper, 100 m |