NETGEAR FS 750, FS 726 manual To is powered on and operating

Page 33

Symptom

Cause

Solution

 

 

 

Link LED is off for a port

There is a problem with this

Make sure the cable is attached

that has a connection.

connection.

securely at both ends.

 

 

Make sure the cable is not damaged.

 

 

Check that the device being connected

 

 

to is powered on and operating

 

 

correctly.

 

 

If the connection is to a workstation,

 

 

make sure the workstation’s network

 

 

interface is installed and configured

 

 

correctly.

 

 

 

File transfer is slow or

Half- or full-duplex setting on

Make sure the attached device is set to

performance degradation

the switch and the connected

auto negotiate.

is a problem.

device are not the same.

 

 

 

 

A segment or device is

One or more devices are not

Verify that the cabling is correct. Be

not recognized as part

properly connected, or

sure all connectors are securely

of the network.

cabling does not meet

positioned in the required ports.

 

Ethernet guidelines.

Equipment may have been accidentally

 

 

disconnected.

 

 

 

ACT LED is blinking

Collisions are occurring

Some collisions are normal when

yellow excessively.

on the connected segment.

the connection is operating in

 

 

half-duplex mode.

 

Duplex modes are mismatched.

Recheck the settings of the device

 

 

attached to the RJ-45 port. Make

 

 

sure the attached device is set to

 

 

auto negotiate.

 

 

 

ACT LED is flashing

A network loop (redundant path)

Break the loop by ensuring that there

continuously on all

has been created

is only one path from any networked

connected ports and the

(see Figures 2-3 and 2.4).

device to any other networked device.

network is disabled

 

 

 

 

 

troubleshooting 5-2

Image 33
Contents Modular Fast Ethernet Switch Statement of Conditions TrademarksCertificate of the Manufacturer/Importer Voluntary Control Council for Interference Vcci StatementIii EN 55024 Declaration of ConformityInternet/World Wide Web Customer SupportContents Troubleshooting Information Technical SpecificationsConnector Pin Assignments Cabling Guidelines Appendix CTables Tables Introduction DescriptionIntroduction Features Key FeaturesKey Features Additional Features Introduction Package Contents Front and Back Panels Physical DescriptionFront and Back Panels of the FS726 Switch 10/100 Mbps RJ-45 Ports Front and Back Panels of the FS750 SwitchFront Panel LEDs LED Mode Button and LED DescriptionsAuto Uplink Module BaysCreating Redundant Paths between Network Devices Example Reset Button Applications Desktop SwitchingMedia Compatibility and Conversion Segment Switching and Bridging from 10 Mbps to 100 MbpsExample of Media Compatibility and Conversion Applications Installation InstallationPreparing the Site Characteristics RequirementsInstalling the Switch Installing the Switch on a Flat SurfaceInstalling the Switch in a Rack Connecting Devices to the Switch Installation Connecting Devices to the SwitchUsing Gigabit Ethernet Modules Applying AC Power Checking the InstallationInstallation Troubleshooting Chart TroubleshootingTroubleshooting Chart TroubleshootingTo is powered on and operating Configuration Additional Troubleshooting SuggestionsSwitch Integrity Network Adapter CardsNetwork Protocol and Standards Compatibility Appendix a Technical SpecificationsData Rate InterfaceFS726 FS750 Performance SpecificationsEnvironmental Specifications Physical Specifications FS726Safety Agency Approvals Electromagnetic EmissionsElectromagnetic Susceptibility RJ-45 Plug and RJ-45 Connector Appendix B Connector PIN Assignments100/1000 Mbps RJ-45 Plug and RJ-45 Connector Pin Assignments Duplex SC Plug and Duplex SC Connector Appendix C Cabling Guidelines Fast Ethernet Cable GuidelinesCabling guidelines Category 5 Cable Category 5 Cable Specifications Twisted Pair CablesTable C-1. Electrical Requirements of Category 5 Cable Figure C-1 illustrates straight-through twisted pair cable Patch Panels and Cables Cabling LengthReturn Loss Near End Cross Talk Next Patch CablesConclusion Fiber Optic Cables Fiber Cable SpecificationsGigabit Cable Guidelines Table C-2. Electrical Requirements of Fiber Optic CableIndex Index NETGEAR, Inc