DUA1640-5AAA02Solving Problems With the Command Line Interface 8-3To remove this loop, either disable some of the ports that connect theexternal switch to the segments, or isolate the active segment switch inthe PS Hub 50 from the cascaded segments.Transceiver module not working. Check the Status LED for thetransceiver module slot. There is a problem if the LED is yellow(PS Hub 40) or flashing green (PS Hub 50 10Mbps transceiver module).It may be for these reasons:n It could be that the transceiver module is incorrectly fitted(highly possible if it is a coaxial transceiver module), refer to themanual that accompanies your transceiver module.n It could be that a port has partitioned due to a loop in yournetwork. Examine your connections and remove the loop. Eachpiece of equipment needs only one connection to your stack.n It could be that SQE test is enabled for the transceiver module.Ensure that it is disabled on the transceiver module.Solving ProblemsWith theCommand LineInterfaceThe initial Login prompt does not display. Check that your terminalor terminal emulator is correctly configured to operate as a standardterminal. If this doesn’t work, try configuring it to operate as a VT100terminal.For console port access, check you have performed the wake-upprocedure correctly, by pressing [Return] several times.Check the settings on your terminal or emulator. The parity must be setto ‘none’, the stop bit ‘1’ and the data bits (character size) ‘8’. Themanagement facility’s auto-configuration works only with speeds from1200 to 19200 baud.If you still cannot access the hub, reset the hub using Quick ConfigManager and retry the wake-up procedure. If this does not work,initialize the hub.You forget your password. Contact your supplier.
