SMC Networks SMC8126L2 manual Appendix B Cables, Twisted-Pair Cable and Pin Assignments

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Appendix B: Cables

Twisted-Pair Cable and Pin Assignments

For 10/100BASE-TX connections, the twisted-pair cable must have two pairs of wires. For 1000BASE-T connections the twisted-pair cable must have four pairs of wires. Each wire pair is identified by two different colors. For example, one wire might be green and the other, green with white stripes. Also, an RJ-45 connector must be attached to both ends of the cable.

Caution: DO NOT plug a phone jack connector into any RJ-45 port. Use only twisted-pair cables with RJ-45 connectors that conform with FCC standards.

Caution: Each wire pair must be attached to the RJ-45 connectors in a specific orientation.

The figure below illustrates how the pins on the RJ-45 connector are numbered. Be sure to hold the connectors in the same orientation when attaching the wires to the pins.

8

8

11

Figure B-1 RJ-45 Connector Pin Numbers

10BASE-T/100BASE-TX Pin Assignments

Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45 connections: 100-ohm Category 3, 4 or 5 cable for 10 Mbps connections or 100-ohm Category 5 cable for 100 Mbps connections. Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet).

The RJ-45 ports on the switch base unit support automatic MDI/MDI-X operation, so you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs. In straight-through cable, pins 1, 2, 3, and 6, at one end of the cable, are connected straight through to pins 1, 2, 3, and 6 at the other end of the cable. When using any RJ-45 port on these switches, you can use either straight-through or crossover cable.

B-1

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Contents Installation Guide Page TigerSwitch 10/100/1000 Installation Guide Page Compliances and Safety Warnings N11846 Safety Compliance Power Cord Set France et Pérou uniquement Sein und die Aufschrift HAR oder Basec tragen Documentation End of Product Life SpanManufacturing Materials Viii Contents Appendix B Cables Appendix a TroubleshootingAppendix C Specifications Making Network ConnectionsAppendix D Ordering Information Glossary Index Xii Tables Figures Overview IntroductionNetwork Management Options Switch ArchitecturePort and System Status LEDs Description of Hardware10/100/1000BASE-T Ports SFP SlotsLED Expandability Features and BenefitsPower Supply Socket ConnectivityManagement Network Planning Introduction to SwitchingCollapsed Backbone Application ExamplesNetwork Aggregation Plan Network Aggregation PlanRemote Connections with Fiber Cable Remote Connections with Fiber CableMaking Vlan Connections Making Vlan ConnectionsApplication Notes Ethernet Cabling Installing the SwitchSelecting a Site Optional Rack-Mounting Equipment Equipment ChecklistPackage Contents Rack Mounting MountingDesktop or Shelf Mounting Installing the Switch in a RackInserting an SFP Transceiver into a Slot Installing an Optional SFP TransceiverConnecting to the Console Port Connecting to a Power SourceSerial Cable Wiring Switch’s 8-Pin Null Modem PC’s 9-Pin Wiring Map for Serial CableInstalling the Switch Cabling Guidelines Connecting Network DevicesMaking Network Connections Twisted-Pair DevicesNetwork Wiring Connections Connecting to PCs, Servers, Hubs and SwitchesFiber Optic SFP Devices Network Wiring ConnectionsMaking Connections to SFP Transceivers Connectivity RulesMbps Fast Ethernet Collision Domain 1000BASE-T Cable RequirementsMbps Gigabit Ethernet Collision Domain Mbps Ethernet Collision Domain Cable Labeling and Connection RecordsInstallation Appendix a TroubleshootingDiagnosing Switch Indicators Power and Cooling ProblemsIn-Band Access 10BASE-T/100BASE-TX Pin Assignments Appendix B CablesTwisted-Pair Cable and Pin Assignments Crossover Wiring Straight-Through WiringTwisted-Pair Cable and Pin Assignments B 1000BASE-T Pin AssignmentsFiber Standards Cable Testing for Existing Category 5 CableAdjusting Existing Category 5 Cabling to Run 1000BASE-T Physical Characteristics Appendix C SpecificationsStandards Switch FeaturesManagement Features CE Mark CompliancesSpecifications Appendix D Ordering Information Ordering Information Glossary Full Duplex End StationEthernet Fast EthernetSwitched Ports Media Access Control MACRedundant Power Supply RPS RJ-45 ConnectorVirtual LAN Vlan Transmission Control Protocol/Internet Protocol TCP/IPNumerics IndexIndex Page Technical Support

SMC8126L2 specifications

The SMC8126L2 is a robust Layer 2 managed switch developed by SMC Networks, designed to meet the demands of modern networking environments. This switch is part of the SMC's lineup of network solutions, emphasizing reliability, efficiency, and advanced functionalities suitable for both small and medium-sized enterprises.

One of the standout features of the SMC8126L2 is its support for 26 ports, which allow multiple devices to connect seamlessly. This includes 24 Fast Ethernet ports (10/100 Mbps) and 2 gigabit uplink ports. This configuration enables flexible network designs and enhances the bandwidth availability for devices that require faster data transmission.

The SMC8126L2 is equipped with various Layer 2 switching capabilities, including port-based Virtual LAN (VLAN) support, allowing businesses to segment their networks for better security and performance. This capability ensures that sensitive data remains isolated and reduces broadcast traffic across the entire network. The switch also supports 802.1Q tagging for VLAN configuration, facilitating the management of multiple VLANs simultaneously.

Quality of Service (QoS) is another significant aspect of the SMC8126L2. It employs intelligent traffic management features, prioritizing critical applications such as VoIP and video conferencing. This ensures that time-sensitive data packets are transmitted efficiently, minimizing latency and improving overall user experience. The switch supports multiple QoS mechanisms, such as 802.1p priority tagging and port-based scheduling, thus accommodating varied networking needs.

Security features are paramount in the SMC8126L2, with network access control through Port Security and MAC address filtering. This prevents unauthorized access and enhances the security posture of the network. Additionally, the switch supports IGMP Snooping, which conserves bandwidth by ensuring that multicast traffic is only sent to ports that require it.

Another remarkable aspect of the SMC8126L2 is its management capabilities. The switch can be managed through various methods, including web-based interfaces, command-line interfaces (CLI), and SNMP (Simple Network Management Protocol). This flexibility allows network administrators to monitor performance, configure settings, and troubleshoot issues effectively.

In summary, the SMC8126L2 brings a suite of advanced features and technologies that cater to the evolving requirements of networking. With its extensive port options, VLAN support, QoS capabilities, robust security measures, and versatile management interfaces, the SMC8126L2 stands out as a reliable choice for organizations looking to enhance their networking infrastructure. Its performance and reliability make it well-suited for addressing the challenges of modern network environments while ensuring efficient data flow and security.
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