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Lantronix
SISGM1040-284-LRT Install Guide
33808 Rev. E
39
Troubleshooting
If the switch fails, isolate and correct the fault by determining the answers to the following questions and then
taking the indicated action. First isolate the problem to the SISGM1040-284-LRT; troubleshoot any other network
gear (e.g., other switches, remote devices like IP cameras, WAPs, midspan injectors, etc.) to isolate the problem
to the SISGM1040-284-LRT.
1
. If one of the Green Power LEDs (PWR1, PWR2) is not lit check the following:
□
Is the power source live and to spec? Adjust the Power Supply front panel +V ADJ screw to increase
voltage as needed.
□
Is the power adapter properly installed? Verify that you are using the right power cord/adapter. Using a
power adapter with DC voltage output higher than the rated voltage of the switch will damage the
switch. Check connections between the switch, the power cord and the wall outlet.
□
Are the power supply modules completely inserted and the thumb screws tight?
□
Are the power cables properly installed? Check for loose power connections, power losses, or surges at
power outlet. See the related section of this manual for details.
2
. Check the port LEDs. If the Green port Link/Act LED or the Amber Link LED is not lit, then verify that the copper
and fiber cable requirements are met. See
Specifications
on page
5
.
3
. If you are configuring a feature via the web GUI, try using the CLI, and vice versa.
4
. Run the device Diagnostics; see the Web User Guide or the CLI Reference manual.
5
. Try resetting to factory defaults and/or a system reset. See the
Reset
Button
on page
10
. See the Web User
Guide or the CLI Reference manual.
6
. Make sure that the function you are trying to use is supported. See
Features
on page
4
.
7
. Verify the install procedures were performed correctly as described in previous sections of this manual.
8
. Check that the proper cable type is used, and its length does not exceed specified limits. See
Ethernet
Interface
Connecting (RJ45 Ethernet
) on page
8
and
Ethernet Interface Connecting (Fiber, SFP)
on page
9
.
9
. Check for improper network topologies. Make sure that your network topology contains no data path loops.
10
. Diagnose via the LEDs: The Ethernet switch can be monitored via LEDs on the front panel to help identify
problems. See
LED Status Indicators
on page
14
.
11
. If the LED indicators are normal with network cables connected properly but packet delivery still fails, check
the status of Ethernet device configurations or status on the network. See the Web User Guide or the CLI
Reference manual.
12
. Check the port configuration. Make sure ports have not been put into a “blocking” state by Spanning Tree,
GVRP, or LACP. The normal operation of the Spanning Tree, GVRP, and LACP features may put the port in a
blocking state. Verify that the port has not been configured as disabled via software.
13
. Check the device firmware version. Keep your products up to date by downloading the latest firmware.
14
. If you forgot your password or cannot log in, physically connect ports 1 and 2 with an Ethernet cable and then
reboot the system. This will bring system back to factory default settings.
15
. If you still cannot resolve the problem, record the model and system information and contact Technical
Support.