3Com 5104M-FL1 Example Connecting a Thin Ethernet 10BASE2 Segment, Ieee

Example: Connecting a Thin Ethernet (10BASE2) Segment

Figure 2-9 shows a typical Thin Ethernet segment connected to an ONline Concentrator through an IEEE 802.3 Repeater

.

	10BASE-FL Module
10BASE-FL
Backbone				10BASE-FL
				Transceiver
					51 01T-FL			IEEE
			200 m
								Repeater
1500 m		10BASE-T Module				50	m
					Transceiver			Cable

Coaxial

Transceiver

A

185m

Thin Ethernet

10BASE-TTransceiver (5101T-TP)

	100 m	B
10BASE-FL Module

Figure 2-9. Thin Ethernet Segment Connecting to ONline Using an IEEE Repeater

To determine if the configuration in Figure 2-9 meets Ethernet distance limitations for transceivers A and B:

1.Use 4200 meters as the maximum network diameter as defined by the 802.3 specification.

2.Subtract the fiber equivalent distance of 420 m for the signal externally entering the 10BASE-T Module from Transceiver B and 230 meters for the signal exiting the 10BASE-FL Module within the same concentrator. (Ethernet Rule 4)

3.Subtract the fiber equivalent distance of 560 meters for the signal externally entering the 10BASE-FL Module in the top concentrator, and internally exiting a different port on the same 10BASE-FL Module.

4.Subtract the fiber equivalent distance (800 m) of the IEEE Repeater. (Ethernet Rule 4)

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