Brocade 6910 Ethernet Access Switch Hardware Installation Guide 25
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Appendix
ATroubleshooting

Diagnosing Switch Indicators

In-Band Access

You can access the management agent in the switch from anywhe re within the attached network
using Telnet, a Web browser, or other network management software tools. However, you must first
configure the switch with a valid IP address, subnet mask, and default gateway. If you have trouble
establishing a link to the management agent, check to see if you have a valid network connection.
Then verify that you entered the correct IP address. Also, be sure the port through which you are
connecting to the switch has not been disabled. If it has not been disabled, then check the network
cabling that runs between your remote location and the switch.
TABLE 5 TROUBLESHOOTING CHART
Symptom Action
Power LED is Off •Check connections between the switch, the power cord and the wall outlet.
•Check if the port is disabled.
Port LED is Off •Verify that the switch and attached device are powered on.
•Be sure the cable is plugged into both the switch and corresponding device.
•If the switch is installed in a rack, check the connections to the punch-down
block and patch panel.
•Verify that the proper cable type is used and its length does not exceed specified
limits.
•Check the adapter on the attached device and cable connections for possible
defects. Replace the defective adapter or cable if necessary.
Diag LED is Flashing
Amber
•Power cycle the switch to try and clear the condition.
•If the condition does not clear, contact your local dealer for assistance
Mgmt LED is off •Verify that the switch and attached device are powered on.
•Be sure the cable is plugged into both the switch and corresponding device.
•Verify that the proper cable type is used and its length does not exceed specified
limits.
•Check the adapter on the attached device and cable connections for possible
defects. Replace the defective adapter or cable if necessary.
Major LED is Green •One or more major system alarm(s) affecting traffic have occurred.
•Check the alarm filter mask to determine potential cause(s) of alarm.
Minor LED is Green •One or more minor system alarm(s) affecting traffic have occurred.
•Check the alarm filter mask to determine potential cause(s) of alarm.