Cisco Systems 3650 manual 10/100/1000 Port Connections, PoE and PoE+ Port Connections, SFP Modules

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Chapter 5 Troubleshooting

Diagnosing Problems

10/100/1000 Port Connections

A port appears to malfunction:

•Verify the status of all ports. See Table 1-3 on page 1-10for descriptions of the LEDs and their meanings.

•Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or shut down. Reenable the port if necessary.

•Verify the cable type. See Appendix B, “Connector and Cable Specifications.”

PoE and PoE+ Port Connections

A powered device connected to a PoE port does not receive power:

•Verify the status of all ports. See Table 1-3and Table 1-7for descriptions of the LEDs and their meanings.

•Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or shut down. Reenable the port if necessary.

•Verify that the power supply installed in the switch meets the power requirements of your connected devices. See the “Power Supply Modules” section on page 1-17for more information.

•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.

Caution Noncompliant cabling or powered devices can cause a PoE port fault. Use only compliant cabling to connect Cisco prestandard IP phones, wireless access points, or IEEE 802.3af-compliant devices.

Note The output of the PoE circuit has been evaluated as a limited power source (LPS) per IEC 60950.

SFP Modules

Use only Cisco SFP modules.

•Inspect the uplink port and SFP module. Exchange the suspect module with a known good module.

•Verify that the module is supported on this platform. (The switch release notes on Cisco.com list the SFP and SFP+ modules that the switch supports.)

•Use the show interfaces privileged EXEC command to see if the port or module is error-disabled, disabled, or shut down. Reenable the port if needed.

•Make sure that all fiber connections are clean and securely connected.

•For CX1 module connections and fiber connections, make sure that cable routing does not violate the minimum allowed cable bend radius. See the module documentation for specific cabling requirements.

Note When ordering or using CX1 cables, ensure that the version identifier is 2 or higher.

Catalyst 3650 Switch Hardware Installation Guide

 

OL-29734-01

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Contents Purpose PrefaceDocument Conventions Related Documentation Obtaining Documentation and Submitting a Service RequestSwitch Model Cisco IOS Image Description Switch ModelsProduct Overview Product Overview Switch Models Switch Model Cisco IOS Image Description Front Panel Catalyst 3650-48PD-L Switch Front Panel PoE and PoE+ 10/100/1000 Ethernet PortsManagement Ports USB Mini-Type B Port USB Type a PortLEDs Uplink PortsSFP and SFP+ Modules Color System Status 3 4 5Port LEDs and Modes Mode LED Port Mode DescriptionPort Mode Port LED Color Meaning Color USB Console LEDColor Description PoE+ LEDColor PoE+ Status Uplink Ports LEDsColor Uplink Ports Link Status Rear PanelStackWise Ports RJ-45 Console Port LEDRJ-45 Console Port Status1 Power Supply Modules Models Models Default Power Supply Available PoE PowerPoE Option Port Switch AC-Power Supply Module LEDsFan Modules DC-Power Supply Module LEDsEthernet Management Port Management OptionsRJ-45 Console Port Network Configurations OL-29734-01 Preparing for Installation Switch InstallationSafety Warnings OL-29734-01 Installation Guidelines Tools and Equipment Planning a Switch Data StackVerifying Switch Operation Powering Off the SwitchData Stack Cabling Configurations Switch Stacking GuidelinesData Stack Bandwidth and Partitioning Examples Data Stacking up to Four Switches in a Side-by-Side MountingExample of a Data Stack with Half Bandwidth Connections Power-On Sequence for Switch Data StacksChanges to Switch Stack Membership Installing the Switch Rack-Mounting Rack-Mounting Brackets Attaching the Rack-Mount BracketsAttaching Brackets for 19-inch Racks Mounting the Switch in a Rack Mounting the Switch in a RackTable- or Shelf-Mounting After Installing the SwitchConnecting to the StackWise Ports Installing the StackWise Adapter in a StackWise Port Installing SFP and SFP+ Modules Installing and Removing SFP and SFP+ Modules14 Installing an SFP Module in an Uplink Port Removing SFP or SFP+ Modules Connecting Devices to the Ethernet Ports10/100/1000 Ethernet Port Connections Switch Installation Connecting Devices to the Ethernet Ports Device Crossover Cable PoE+ Port ConnectionsWhere to Go Next Power Supply Module Overview Power Supply InstallationPart Number Description AC OK LED 640-W AC Power Supply Module 6 5 AC Power Supply Module LEDs Installation GuidelinesDC Power Supply Module LEDs Installing or Replacing an AC Power Supply Statement Installing a DC Power SupplyEquipment That You Need Grounding the SwitchStripping the Ground Wire 10 Attaching the Ground Lug and Wire Assembly Wiring the DC Input Power Source Installing the DC Power Supply in the Switch12 DC Source a Isolated From Source B with No Common Ground Finding the Power Supply Module Serial Number14 1025-W AC Power Supply Serial Number 16 640-W DC Power Supply Module Serial Number Overview Installing the FanFan Module Installation Fan LED Installing a Fan ModuleFan Module Serial Number Finding the Fan Module Serial NumberSwitch LEDs TroubleshootingDiagnosing Problems Switch Post ResultsLink Status Switch ConnectionsBad or Damaged Cable Ethernet and Fiber CablesPoE and PoE+ Port Connections 10/100/1000 Port ConnectionsSFP Modules Spanning Tree Loops Switch PerformanceInterface Settings Ping End DeviceAutonegotiation and Network Interface Cards Resetting the SwitchCabling Distance Replacing a Failed Data Stack Member Finding the Switch Serial NumberSwitch Specifications Technical SpecificationsEnvironmental Ranges Physical Specifications Power Specifications Power Supply Module SpecificationsPower Specifications Physical Specification Fan Module SpecificationsOperating Specification OL-29734-01 Connector Specifications Connector and Cable Specifications10/100/1000 Ports SFP and SFP+ Modules Gigabit Ethernet CX1 SFP+ Copper Connectors10/100/1000 Ethernet Management Port Figure B-4 Simplex LC Cable ConnectorFigure B-7 10/100 Port Pinouts Console PortStackWise Cables Cable and Adapter SpecificationsCable Part Number Cable Length Minimum Bend Radius StackWise AdaptersStackWise Cables Minimum Bend Radius and Coiled Diameter Locating the StackWise Adapter Serial NumberStackWise Adapter Blanks SFP and SFP+ Module Cable SpecificationsTwo Twisted-Pair Cable Pinouts Four Twisted-Pair Cable PinoutsDevice Switch Console RJ-45-to-DB-9 Port DTEIdentifying a Crossover Cable Console Port Adapter PinoutsDSR DTR CTS RTS Switch Console RJ-45-to-DB-25 Port DTEAccessing the CLI Through a Console Port Configuring the Switch with the CLI-Based Setup ProgramAccessing the CLI Accessing the CLI Through Express SetupUSB Console Port Installing the Cisco Microsoft Windows USB Device Driver Uninstalling the Cisco Microsoft Windows XP USB Driver Uninstalling the Cisco Microsoft Windows USB DriverIP Settings Entering the Initial Configuration InformationConfiguring the Setup Program Enter a host name for the switch, and press Return These choices appear OL-29734-01
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