Network Configuration Examples
5-1
Chapter 5 Network Configuration Examples
This chapter provides an overview of Ethernet technology and the levels of service that are provided
by incorporating NETGEAR Ethernet hubs and switches into your network. Examples are given to
illustrate the function of the hubs and switches in several configurations that provide those different
levels of service to network users.
Ethernet Technology
When 10BASE-T Ethernet was originally introduced, multiple repeaters were often used to build
large networks. To increase the number of connections, repeaters were connected together because
individual repeater port densities were often limited to 12 to 24 ports. As structured wiring systems
were implemented, horizontal wiring from the wiring closet to the tabletop was designed for a
maximum of 328 feet (100 m). Stackable repeaters eliminated the need for collision domains to
extend over multiple repeater hubs.
100BASE-T Fast Ethernet technology maintains the same concepts of the 10BASE-T technology.
Both use the same Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Media
Access Control (MAC) protocol. Both 100BASE-T and 10BASE-T Ethernet use the same type of
Ethernet frame and error detection mechanisms. They also support the same star topology using
traditional media types, and are managed using the same network management protocols. The most
fundamental difference between the two technologies is that 100BASE-T operates 10 times faster than
the traditional 10BASE-T.
100BASE-T technology was developed to support the new paradigm and, by using switch technology,
can provide for four distinct levels of service. Combining 10BASE-T, 100BASE-TX, and switching
technology provides:
•
10BASE-T shared bandwidth of 10 Mbps for the group of active users.
•
10BASE-T dedicated bandwidth of 10 Mbps for each user.
•
100BASE-TX shared bandwidth that equals 100 Mbps for the group of active users.
•
100BASE-TX dedicated bandwidth that equals 100 Mbps for each user.
NOTE: When integrating a 10 Mbps and a 100 Mbps network, use all Category 5 cabling
so that connections can freely be switched between 10 and 100 Mbps devices. Also use dual
speed (10/100) Ethernet adapters in all devices so they can be attached to any 10 or 100
Mbps hub or switch.
