Cabletron Systems NB25 E, NB20E Chapter Testing And Lanview, Installation Check-Out, NB-25E

CHAPTER 4

TESTING AND LANVIEW

This section contains procedures to test the NB20E or NB25E Two Port Ethernet Bridge after it has been connected to the network. A description of the LANVIEW LEDs, the Forward Broadcast, and the Root Switch, is also provided.

4.1INSTALLATION CHECK-OUT

After the NB20E or NB25E is connected to the network, verify that packets can be passed between the two Ethernet network segments via the bridge. Two Ethernet node testers, such as Cabletron Systems' LAN-MD™, are required for this procedure to generate valid data packets.

Before you begin, test each Ethernet segment connected to the NB20E or NB25E to ensure that the segments meet IEEE 802.3 specification limits.

1.Move the Forward Broadcast switch on the front panel of the Bridge (Fig. 4-1) to the On () position. This will allow broadcast messages sent by the LAN-MDs to pass through the bridge.

2.Using a transceiver (1, Fig. 4-2) and an AUI cable, connect a LAN-MD (2) to one of the segments connected to the bridge (3).

3.Select and run test 6 - SERVER on this LAN-MD.

4.Verify that the Test Status PASS LED is lit and that the Status Code reads 000 or 001. If these two conditions are met, the LAN-MD is now the SERVER unit and will act as a packet echoer when used with another LAN-MD.

NB-25E

ETHERNET /IEEE 802.3 BRIDGING UNIT

WITH REMOTE LANVIEW® AND MANAGEMENT

ON LINE

STAND BY

BROADCASTFORWARD 1 0

ROOT 1 0

	XMT
	RCV
	CP
	POK
1	PORT	2

Figure 4-1 LANVIEW LEDs

4-1