SMC Networks SMC8926EM, SMC8950EM manual Power and Cooling Problems, Installation, In-Band Access

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A Troubleshooting

Power and Cooling Problems

If the power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply. However, if the unit powers off after running for a while, check for loose power connections, power losses or surges at the power outlet, and verify that the fans on the unit are unobstructed and running prior to shutdown. If you still cannot isolate the problem, then the internal power supply may be defective.

Installation

Verify that all system components have been properly installed. If one or more components appear to be malfunctioning (such as the power cord or network cabling), test them in an alternate environment where you are sure that all the other components are functioning properly.

In-Band Access

You can access the management agent in the switch from anywhere within the attached network using Telnet, a Web browser, or other network management software tools. However, you must first configure the switch with a valid IP address, subnet mask, and default gateway. If you have trouble establishing a link to the management agent, check to see if you have a valid network connection. Then verify that you entered the correct IP address. Also, be sure the port through which you are connecting to the switch has not been disabled. If it has not been disabled, then check the network cabling that runs between your remote location and the switch.

Caution: The management agent can accept up to four simultaneous Telnet sessions. If

the maximum number of sessions already exists, an additional Telnet connection will not be able to log into the system.

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Contents Installation Guide TigerStack II 10/100/1000 Installation Guide Page Warranty and Product Registration Compliances and Safety Warnings CE Mark Declaration of Conformance for EMI and Safety EEC Power Cord Safety Safety CompliancePower Cord Set France et Pérou uniquement Environmental Statement Documentation About This Guide Contents Making Network Connections Glossary Index Tables Figures Figures Introduction OverviewSwitch Architecture Network Management OptionsIntroduction Activity On/Flashing Green Port Status LEDsCondition Status Link SpeedOptional Redundant Power Supply Power Supply SocketsExtender Module LEDs Features and BenefitsOptional Media Extender Modules ConnectivityExpandability PerformanceManagement Introduction Introduction to Switching Network PlanningApplication Examples Collapsed BackboneNetwork Aggregation Plan Network Aggregation PlanRemote Connections with Fiber Cable Remote Connections with Fiber CableMaking Vlan Connections Making Vlan ConnectionsUsing Layer 3 Routing Application Notes Network Planning Installing the Switch Selecting a SiteEthernet Cabling Equipment Checklist Package ContentsOptional Rack-Mounting Equipment Mounting Rack MountingInstalling the Switch in a Rack Desktop or Shelf MountingInstalling an Optional Module into the Switch Installing an Optional ModuleInstalling an Optional SFP Transceiver Inserting an SFP Transceiver into a SlotConnecting Switches in a Stack Making Stacking ConnectionsConnecting to a Power Source Stacking TopologiesConnecting to the Console Port Wiring Map for Serial CableSerial Cable Wiring Switch’s 8-Pin Null Modem PC’s 9-Pin Installing the Switch Twisted-Pair Devices Connecting Network DevicesMaking Network Connections Cabling GuidelinesConnecting to PCs, Servers, Hubs and Switches Network Wiring ConnectionsNetwork Wiring Connections Fiber Optic SFP DevicesGbps Fiber Optic Connections Making Connections to SFP TransceiversConnecting to an XFP Transceiver Connectivity Rules 1000BASE-T Cable RequirementsGbps Ethernet Collision Domain Mbps Gigabit Ethernet Collision Domain Mbps Fast Ethernet Collision DomainMbps Ethernet Collision Domain Cable Labeling and Connection Records Appendix a Troubleshooting Diagnosing Switch IndicatorsPower and Cooling Problems InstallationIn-Band Access Stack Troubleshooting Troubleshooting Appendix B Cables Twisted-Pair Cable and Pin Assignments10BASE-T/100BASE-TX Pin Assignments Straight-Through Wiring Crossover WiringFigure B-3 Crossover Wiring 1000BASE-T Pin AssignmentsCable Testing for Existing Category 5 Cable Adjusting Existing Category 5 Cabling to Run 1000BASE-TFiber Standards Dispersion-Shifted Fiber Nm Loss-MinimizedNon-Zero Dispersion-Shifted Cables Appendix C Specifications Physical CharacteristicsPower Supply WeightTemperature Power ConsumptionSwitch Features Management FeaturesStandards Compliances Extender ModulesGlossary 10BASE-TCSMA/CD Ieee TIA Index NumericsIndex-2 Index-3 Index Index-4 Page 150200000054A R01

SMC8926EM, SMC8950EM specifications

SMC Networks has established itself as a prominent player in the networking and connectivity market, offering a range of professional solutions designed for small to medium-sized enterprises. Among its notable products are the SMC8950EM and the SMC8926EM, two advanced Ethernet switches that cater to the need for reliable and efficient networking.

The SMC8950EM is an enterprise-class managed switch that delivers high-performance capability with 48 10/100/1000Mbps Ethernet ports, providing extensive connectivity for various devices on a local area network. Its architecture is designed to handle high traffic loads, making it apt for environments where speed and reliability are paramount. This switch supports multiple protocols, including VLANs, which allow for flexible network segmentation and improved security. The SMC8950EM also features several Layer 2 and Layer 3 management protocols, enabling the switch to support advanced routing, Quality of Service (QoS), and network traffic management.

On the other hand, the SMC8926EM is a compact yet powerful switch equipped with 24 10/100/1000Mbps Ethernet ports, making it ideal for smaller installations or branch offices that require scalability without compromising on performance. With support for Power over Ethernet (PoE), the SMC8926EM simplifies the implementation of IP phones, security cameras, and wireless access points, making it particularly useful in environments where power outlets may be limited.

Both models employ advanced technologies, such as network storm control and link aggregation, to enhance performance and ensure seamless connectivity. They also provide comprehensive network monitoring capabilities, allowing administrators to manage traffic and troubleshoot issues proactively. The user-friendly web interface facilitates easier management and configuration, while SNMP support enables integration with existing network management systems for enhanced visibility and control.

Ultimately, the SMC8950EM and SMC8926EM represent robust networking solutions that address the challenges faced by modern enterprises. With their combination of high performance, advanced features, and scalability, these switches are well-suited for companies looking to build a reliable and efficient network infrastructure. Whether for a large organization or a small branch office, SMC Networks continues to deliver products that meet the evolving needs of users worldwide.
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