3Com 32x, 52x manual This is Only station

Troubleshooting the Token Ring Connection 4-5

Table 4-4Troubleshooting the Token Ring Connection (Models 327 and 527 only) (continued)

Symptom Cause and Action

Path 1 is up, but the system does not appear to be communicating with other network devices.

The system may have attempted to enter the token ring at the wrong speed.

Check the setting of the ring speed for path 1 (SHow !1 -PATH BAud). Make sure that the setting of this parameter matches the speed of the token ring network.

The following error message appears:		If your system is the first device to enter the ring, disregard this
This is	the only station	message. If there are multiple nodes on the ring, your system may be
		isolated.
on the	ring
		1 Determine the number of nodes on your ring.
		2 If there are multiple nodes on the ring, check the setting of the ring
		speed for path 1. (In monitor mode, enter CL, then select ring speed
		from the menu that displays.) Make sure that the setting of this
		parameter matches the speed of the token ring network.
One of these error messages appears:		Possible physical connection problem or the system may have attempted
Possible ring speed		to enter the token ring at the wrong speed.
		1 Check your LAN cable.
mismatch
Adapter is not connected to		2 Determine the ring speed of your token ring network.
a ring		3 Check the setting of the ring speed for path 1. (In monitor mode,
or		enter the CL, then select ring speed from the menu that displays.)
Open failed during phase		Make sure that the setting of this parameter matches the speed of
		the token ring network.
- lobe	media.
Specialty powered wiring center		External device may have overstressed the auxiliary power’s limits,
(MAU) or signal conversion device		lowering available voltage to unacceptable levels.
(such as STP-to-fiber optic transceivers)

will not work on STP connector.	Refer to the cabling information in your hardware installation
	manual for voltage, current, and pinout specifications of this feature.
	Refer to the documentation that accompanies your external device
	for compatibility information.
	External device may have blown the fuse of the system.
	Return the system for fuse replacement.
	If these actions do not solve the problem, contact your network supplier.
(continued)