Installation guide

Page 4-1
USING LANVIEW
CHAPTER 4
USING LANVIEW
The MR9 uses Cabletron Systems’ built-in diagnostic and status
monitoring system, LANVIEW. The LANVIEW indicators give you a
visual indication of network status and problems.
This chapter explains how to use the LANVIEW indicators to
monitor network activity and help troubleshoot network problems on
the physical layer.
4.1 THE LANVIEW INDICATORS
The following explains the purpose of each LANVIEW LED on the
MR9. See Figure 4-1.
Power (PWR) LED
When lit, this green LED indicates that the MR9 is receiving power.
If this LED is not lit, the problem may be with the input power, or
with the MR9.
Collision (CLN) LED
This red LED flashes to indicate that a collision is occurring on one
or more segments. The flash of the LED is pulse stretched for
viewing effect. Collision frequency increases as network traffic
increases. If the CLN LED is lit for extended periods, it can indicate
that traffic levels are saturating your network and network
performance is declining.
Note: There are separate LNK and RECEIVE LEDs for each twisted
pair port on the MR9.