MicroNet Technology SP3508A manual Appendix B Troubleshooting

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7.2Appendix B: Troubleshooting

zSymptom: Power indictor does not light up (Green).

¾Causes: Defective external power supply.

¾Solution: Check the power plug by attaching with a functioning one. Check the power cord with other devices. If both tests fail, have the power supply replaced by qualified distributor.

zSymptom: Link indicator does not light up (Green).

¾Causes: Network interface, network cable or switch port may be faulty.

¾Solution:

Power off and reconnect the VDSL switch.

Verify attached network devices are powered on.

Verify the cables are connected properly on both ends.

Verify the proper cable is used and the distant does not exceed the specified limit.

Phone wire must be connected between SP3508A and VDSL modem prior to powering on of devices.

Replace the defective cable or modem if necessary.

zSymptom: VDSL always link on 5M/5M speed mode at short phone cable.

¾Cause: VDSL auto speed lock up.

¾Solution: Please re-power VDSL Modem (SP3501AS).

¾SP3508A will redo auto speed function while SP3501AS being re-powered on.

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Contents User’s Manual Port Vdsl Managed SwitchModel No. SP3508A Table of Contents Chapter Application Appendix Key Features Package ContentsIntroduction Page Cabling Requirements InstallationHardware Installation Pre-installation RequirementsVdsl Port RJ-11 Connecting to Gigabit EthernetConnecting to RJ-11 100/ACT Physical DescriptionLED Definition 10/ACTGigabit Switch ConnectorsEthernet Out-Band Access IP Address ConfigurationConsole Port Program will enter the following text-based user interface Main Menu EditSave Previous MenuTelnet Remote AccessWeb-Based UI Page Home Web-Based UI Management InterfacePort Status Port Statistics IP Address Switch SettingBasic Advanced Broadcast Storm Filter First Come First ServiceWeighted Round Robin Enable Delay BoundMulticast Protocol Vlan Protocol Enable Spanning TreeEnable Internet Group ProtocolSpeed Port ControlsDuplex Group ID Aggregator SettingLink Aggregation System PriorityState Activity Aggregator InformationPassive Filter DatabaseIgmp Snooping ActiveStatic MAC Address MAC Filtering Port SecuritySupport Multiple Vlan Ieee 802.1Q Vlan Vlan ConfigurationSupport Protocol-based Vlan Ingress Filtering Port VIDIngress Filtering Rule Spanning Tree Hello Time Delay TimePriority Max AgePort Priority Port SnifferPath Cost Snmp Read only NameLocation ContactSecurity Manager Signal to Noise Ratio‘Temperature Alarm’ trap ‘Fan Speed Alarm’ trapUsername Tftp Update FirmwarePassword Reconfirm PasswordTftp Restore Configuration Configuration BackupTftp Backup Configuration Reset Reset and Rebooting SystemReboot Bridging Functions ApplicationAppendix Appendix a SpecificationsDimension Appendix B Troubleshooting Transmission Mode Appendix C System DiagnosticsPower and Cooling Problems InstallationCabling Physical ConfigurationSystem Integrity Vdsl Technology Requirements & Definitions Appendix D Vdsl SpectrumPort-Based Vlan Setting Appendix E Example of Vlan SettingTag-Based Ieee 802.1Q Vlan Setting Page Page