Cabletron Systems MICROMMAC-22T, User Manual

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5-1
CHAPTER 5
MONITORING AND TROUBLESHOOTING
This chapter describes how to use LANVIEW LEDs, the LCD system,
and the Power Up Diagnostic screen to monitor MicroMMAC-T and
network performance. It also includes a troubleshooting checklist.
5.1 USING LANVIEW LEDS
LANVIEW LEDs are part of the overall diagnostic and status monitoring
system for the MicroMMAC-T.
Table 5-1 lists LEDs along with their
indication colors and the information they convey. Section 5.3 describes
the LED cycle during power up.
Table 5-1 LANVIEW LEDs
LED Name LED Color What It Means
Lobe Port Status
(Ports 1-24)
Off
Green
Red (solid)
Red (blinking)
No Link/Port Enabled
Link/Port Enabled
Port Disabled/Ring Out Status
Link or Ring Speed Fault/Port
Disabled
16Mb/s
(Ring Speed)
Yellow
Off
16 Mbps Ring Speed
4 Mbps Ring Speed
ACT
(Network Activity)
Green (Flashing)
Red (Flashing)
Off
Good Frames
Beacon Recovery in Progress
No Frame Traffic
MGMT
(Network Management)
Green
Red
Management Agent Active
Management Agent Inactive
CPU
(Central Processing
Unit)
Off
Green (Flashing)
Green (Blinking)
Red
Yellow
Yellow/Green
No Power
CPU Initializing
CPU Functioning (normal)
CPU Not Functioning
Diagnostic Testing
Booting
LNK (on TPIM)
Green
Red
Link/Port Enabled
No Link or Port Disabled
“Flashing” indicates an irregular LED pulse. “Blinking” indicates a steady LED pulse.