Hardware Installation and Reference Guide FAQs
20
5 FAQs
5.1 AC Power Module Does Not Work
5.1.1 Symptom
All indicators on the front panel are off, and the fan does not rotate.
5.1.2 Solution
(1) Remove the power cord from the power socket.
(2) Check whether cables in the cabinet or on the workbench are correctly connected, and whether the power
cord is securely connected to the power socket.
(3) Check whether the power cord is securely connected to the power supply module.
5.2 Serial Console Has No Output
5.2.1 Symptom
After the system is started, the serial console does not display any information.
5.2.2 Solution
(1) Check whether the serial cable is properly connected, and whether the connected serial port is consistent
with that configured on HyperTerminal.
(2) Check whether the baud rate configured for the serial port on HyperTerminal is correct.
(3) If there is still no output on the serial port, contact Ruijie technical support.
5.3 Optical Port Fails
5.3.1 Symptom
After an optical module is inserted into an optical port and the optical fiber is properly connected, the indicator
of the optical port is still off.
5.3.2 Solution
Perform the following steps:
(1) Check whether the receive end and transmit end of the fiber connection are reverse. In normal cases, the
transmit end on a local optical port must be connected to the receive end on the peer port. You can change
the connection sequence of the two fibers on the optical modules.
(2) Check whether the wavelengths of the optical modules on both ends are the same. For example, an optical
module with a wavelength of 1310 nm cannot be connected to an optical module of 1550 nm.
(3) Check whether the distance between the two ends exceeds the maximum length marked on the optical
modules.
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