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CHAPTER 4

TROUBLESHOOTING
This chapter contains instructions for using LANVIEW LEDs to
troubleshoot physical layer network problems.

4.1 LANVIEW LED Signals

The STH incorporates the Cabletron Systems LANVIEW Status
Monitoring and Diagnostics System. LANVIEW LEDs can help diagnose
problems such as a power failure or a cable fault. The STH includes the
following LANVIEW LEDs:

4.2 Trouble Resolution

If this section does not guide the user to a solution, please contact
Cabletron Systems Technical Support (see Section 1.4, Getting Help.)
Table 4-1. LED Signals
LED Color Condition
PWR Green Power on.
off Power off.
16 Mb Yellow Ring Speed set to 16 Mbps.
off Ring Speed set to 4 Mbps.
STACK Green Connection with intelligent hub intact.
Red Bypassed or disconnected from intelligent hub.
Ports
off Port enabled but not linked.
Green Port enabled and linked.
Red Port disabled (or set to Ring Out) and not linked.
Blinking
Red Ring Speed Fault -OR- Port linked but disabled.