Cabletron Systems STHI manual Trouble Resolution, Loss Of Power, Failure to Link on Enabled Port

Trouble Resolution

Table 4-1. LANVIEW LED Signals (Continued)

LED	Color	Condition
Ports	off	Port enabled but not linked.
	Green	Port enabled and linked.
	Red	Port disabled (or set to Ring Out) and not linked.
	blinking	Ring Speed Fault -OR- Port linked but disabled.
	Red

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.)

Loss Of Power

If the STHI is having power problems, check the power delivery system (power cable, power outlet, circuit breaker, fuse).

Failure to Link on Enabled Port

1

2

Check that the Token Ring devices at either end of the cable are powered-up.

Verify that the network cable’s connectors have the proper pinouts. Refer to Section 2.2.2, TCU and COM Ports.

Check the cable for continuity. A variety of tools are available for this test, depending on the media being used.

Check that the cables meet specifications for dB loss as described in Appendix A, TPIM Specifications.

Ring Speed Fault 3

The network device being linked at this port is operating at a ring speed different from the STHI hub’s currently set ring speed. Set the two devices to the same speed.

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