Black Box LPB708A, LPB724A, LPB716A, 8-/16-/24-Port 10/100 PoE PSE Web Smart Switch Troubleshooting

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8-/16-/24-Port 10/100 PoE PSE Web Smart Switch

5. Troubleshooting

Q: Resolving No Link Condition

A:The possible causes for a no link LED status are as follows: - The attached device is not powered on.

- The cable may not be the correct type or is faulty. - The installed building premise cable is faulty.

- The port may be faulty.

Q:Computer A can connect to Computer B, but cannot connect to Computer C through the Managed Switch

.

A:The network device of Computer C may fail to work. Please check the link/act status of Computer C on the LED indicator. Try another network device on this connection.

The network configuration of Computer C may be incorrect. Please verify the network configuration on Computer C.

Q:The uplink connection function fails to work

.

A:The connection ports on another switch must be connection ports. Please check if connection ports are used on that Managed Switch.

Please check the uplink setup of the Managed Switch to verify the uplink function is enabled.

Q: What if I forgot the password?

A:You need to reset the switch to default. So every time you finish configuration, please backup your configuration. That will be easier to restore your configuration to the switch after reset.

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Contents 16-/24-Port 10/100 PoE PSE Web Smart Switch 16-/24-Port 10/100 PoE PSE Web Smart Switch Normas Oficiales Mexicanas NOM Electrical Safety Statement NOM Statement and CE DirectiveTable of Contents Table of Contents Specifications Hardware Specifications Specifications Management Software SpecificationsFeatures Overview 2.1 IntroductionWhat’s Included Overview Front and Back Panels 2.4.1 Front PanelBack Panel LED Indicators LED IndicatorsLED Installing an Optional SFP Transceiver Module Installing an SFP fiber transceiver into the LPB724A switchInstalling Switch to a 19-Inch Wiring Closet Rail InstallationPower On Cabling RequirementsSwitch Cascading in Topology Typical Network Topology in DeploymentVlan Set IP Address, Subnet Mask, and Default Gateway IP Address LPB708A/LPB716ALogin screen for Web Password admin Operation of Web-based ManagementAdministrator IP Address AssignmentWeb Management Home Overview Authentication Configuration System IP ConfigurationSystem IP Configuration screen System StatusReboot Device Load Default SettingFirmware Update Port ManagementPort Configuration Port MirroringBandwidth Control 10. Port Mirroring screenBroadcast Storm Control 5 PoEVlan Setting Vlan ModePort-based VLAN- Vlan Member 15. Port-based Vlan Member Setting screen Tag-based VlanTag-based VLAN-VLAN Member 16. Tag-based Vlan screenMulti to 2 Setting 17. Tag-based Vlan Member Setting screen18. Multi to 2 Setting screen Per Port Counter Counter CategoryQoS Setting Priority Mode Class of ServiceClass of Service- TCP/UDP 21. TCP/UDP Port configuration screenClass of Service-IP TOS/DS Class of Service-802.1pClass of Service-Physical Port MAC Address ConfigurationSecurity 2 TCP/UDP Filter Configuration Spanning Tree STP Bridge Settings 26. TCP/UDP filtering configurationSTP Port Settings 27. STP Bridge Settings screen28. STP Port Settings screen TrunkingIP Address Assignment Backup/Recovery Function name Backup/Recovery32. Miscellaneous Setting screen LogoutTroubleshooting IP Address Assignment IP addressSubnet Mask Default Gateway DNS LPB708A, rev