Cabletron Systems NBR-420 - Manual (Page 17)

Chapter 2: Controls and Indicators
Page 2-2 NBR-SERIES Installation Guide
2.1 LANVIEW LEDs
The NBR-220, NBR-420, and NBR-620 incorporate the Cabletron
Systems LANVIEW status monitoring and diagnostics system.
LANVIEW LEDs help diagnose problems, such as a power failure or a
cable fault. Each NBR includes the following LANVIEW LEDs:
• A CPU LED, for board status
• RECEIVE, TRANSMIT, COLLISION, and STAND BY LEDs for
each Ethernet port
• A PWR LED for power status
2.2 RESET BUTTON
The front panel also has a RESET button that allows you to re-initialize
the processor. Chapter 4, Troubleshooting, provides detailed
descriptions of each NBR LANVIEW LED.
2.3 LCD DISPLAY
The NBR-420 and NBR-620 are equipped with an LCD Display located
on the front panel. The LCD provides status information about the present
as well as past condition of the hub. You can view power up diagnostics,
firmware revisions, MAC addresses, IP addresses, and alarm messages.
The LCD displays the most current event, but can store up to 25 past
events in memory. To access stored messages, press the DISPLAY button
located on front panel of the NBR. Refer to Chapter 4, Troubleshooting,
for detailed information.