10/100/1000 Port Connections; Poe And Poe+ Port Connections; Sfp Modules - Cisco Catalyst 3650 Series Hardware Installation Manual
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Also See for Catalyst 3650 Series:
- Command reference manual (1108 pages) ,
- Configuration manual (94 pages) ,
- Manual (94 pages)
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Chapter 5
Troubleshooting
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10/100/1000 Port Connections
If a port appears to malfunction:
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PoE and PoE+ Port Connections
If a powered device connected to a PoE port does not receive power:
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Caution
Noncompliant cabling or powered devices might cause a PoE port fault. Use only compliant cabling to
connect Cisco prestandard IP phones, wireless access points, or IEEE 802.3af-compliant devices.
Ensure that the output of the PoE circuit has been evaluated as a limited power source (LPS) per IEC
Note
60950.
SFP Modules
If SFP modules do not function correctly:
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OL-29734-01
Verify that both the devices have power.
Verify that you are using the correct cable type. For more information, see the
Specifications" section on page
Look for loose connections. Sometimes a cable appears to be seated but is not. Disconnect the cable
and then reconnect it.
Verify the status of all the ports. For more information, see the
page
1-21.
Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or
shut down. Re-enable the port if necessary.
Verify the cable type. For more information, see the
Verify the status of all the ports. For more information, see the
page
1-21.
Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or
shut down. Re-enable the port, if necessary.
Verify that the power supply installed in the switch meets the power requirements of your connected
devices.
Verify the cable type. Many legacy-powered devices, including older Cisco IP phones and access
points that do not fully support IEEE 802.3af might not support PoE when connected to the switch
by a crossover cable. Replace the crossover cable with a straight-through cable.
Use only Cisco SFP modules.
Inspect the uplink port and SFP module. If the module is faulty, replace the module.
2-1.
"Connector Specifications" section on page
Catalyst 3650 Switch Hardware Installation Guide
Diagnosing Problems
"Connector
"Port LEDs and Modes" section on
"Port LEDs and Modes" section on
2-1.
5-3
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