Cabletron Systems NB20E User Manual

Cabletron Systems NB20E User Manual Manual pdf 27 page image

4-1CHAPTER 4TESTING AND LANVIEWThis section contains procedures to test the NB20E or NB25E Two PortEthernet Bridge after it has been connected to the network. A descriptionof the LANVIEW LEDs, the Forward Broadcast, and the Root Switch, isalso provided.4.1 INSTALLATION CHECK-OUTAfter the NB20E or NB25E is connected to the network, verify thatpackets can be passed between the two Ethernet network segments via thebridge. Two Ethernet node testers, such as Cabletron Systems'LAN-MD™, are required for this procedure to generate valid datapackets.Before you begin, test each Ethernet segment connected to the NB20E orNB25E 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 messagessent by the LAN-MDs to pass through the bridge.2. Using a transceiver (1, Fig. 4-2) and an AUI cable, connect aLAN-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 Codereads 000 or 001. If these two conditions are met, the LAN-MD is nowthe SERVER unit and will act as a packet echoer when used withanother LAN-MD.Figure 4-1 LANVIEW LEDsNB-25EETHERNET /IEEE 802.3 BRIDGING UNITWITH REMOTE LANVIEW® AND MANAGEMENTXMTRCVCPPOKPORT1 21100ON LINESTAND BYFORWARDBROADCASTROOT

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