Cabletron Systems NB20E, NB25 E user manual Setting The Mode Switches

INSTALLING THE NB20E OR NB25E BRIDGE

1

10

2

9

8

7

	3	4	5	6
1.	ST-500 Transceiver		6.	Power Receptacle
2.	AUI Cable		7.	Power Cord
3.	Bridge		8.	AUI Cable
4.	AUI Port 2		9.	ST-500 Transceiver
5.	AUI Port 1		10.	RS232 Port (NB25E only)

Figure 3-3 Installation

2.Attach an AUI cable (2, 8) no more than 50 meters in length to each of the transceivers that you connected to each network segment.

3.Connect the AUI cable from the transceiver to the AUI port (4, 5) located on the back panel of the NB20E or NB25E bridge.

3.2.4Setting The Mode Switches

Before connecting the bridge to the power supply, set the Forward Broadcast and Root switches to the appropriate On () or

Off (O) position as defined below:

•If you want the bridge to pass Broadcast messages between segments, set the FORWARD BROADCAST switch (Fig. 3-4) to the On () position.

•If you want this bridge to receive priority over all other bridges on the network, set the ROOT switch (Fig. 3-4) to the On () position. Only ONE bridge on the network should have the ROOT switch enabled.

3-4