SMC Networks 48-Port manual Chapter Network Planning, Introduction to Switching

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CHAPTER 2

NETWORK PLANNING

Introduction to Switching

A network switch allows simultaneous transmission of multiple packets via non-crossbar switching. This means that it can partition a network more efficiently than bridges or routers. The switch has, therefore, been recognized as one of the most important building blocks for today’s networking technology.

When performance bottlenecks are caused by congestion at the network access point (such as the network card for a high-volume file server), the device experiencing congestion (server, power user or hub) can be attached directly to a switched port. And, by using full-duplex mode, the bandwidth of the dedicated segment can be doubled to maximize throughput.

When networks are based on repeater (hub) technology, the maximum distance between end stations is limited. For Ethernet, there may be up to four hubs between any pair of stations; for Fast Ethernet, the maximum is two. This is known as the hop count. However, a switch turns the hop count back to zero. So subdividing the network into smaller and more manageable segments, and linking them to the larger network by means of a switch, removes this limitation.

A switch can be easily configured in any Ethernet or Fast Ethernet network to significantly boost bandwidth while using conventional cabling and network cards.

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Contents TigerSwitch 10/100 Page TigerSwitch 10/100 Installation Guide Trademarks Limited Warranty Limited Warranty FCC Class a CompliancesEC Conformance Declaration Class a Industry Canada Class a Iii Safety ComplianceWarnhinweis Faseroptikanschlüsse Optische Sicherheit Underwriters Laboratories Compliance StatementWichtige Sicherheitshinweise Germany Table of Contents Troubleshooting A-1 Installing the SwitchMaking Network Connections Cables B-1 Specifications C-1Ordering Information D-1 Glossary Index ViiViii Overview Chapter About Tigerswitch 10/100Rear Panel Switch ArchitectureManagement Options Description of Hardware10BASE-T/100BASE-TX Ports SMC6948L2 LED Status LEDsNetwork Management Module Network Management ModuleVLANs Spanning Tree ProtocolOptional Media Extender Modules Multicast SwitchingTraffic Priority Power Supply Receptacles Optional Redundant Power Unit SMCRPU150WConnectivity Features and BenefitsExpandability Management PerformanceChapter Network Planning Introduction to SwitchingCollapsed Backbone Sample ApplicationsCentral Wiring Closet Central Wiring ClosetRemote Connections with Fiber Cable Collapsed Backbone Using Fiber CableMaking Vlan Connections Making Vlan ConnectionsMbps Gigabit Ethernet Collision Domain Connectivity RulesMaximum Fiber Optic Cable Distance for 1000BASE-SX Mbps Fast Ethernet Collision Domain Maximum Network Diameter Using RepeatersSMC 3-2 Rule for Class II Repeaters SMC 2-1 Rule for Class I RepeatersSMC 5-4-3 Rule Mbps Ethernet Collision DomainMaximum Ethernet Cable Distance Application Notes Network Planning Selecting a Site Installing the SwitchPackage Contents Equipment ChecklistOptional Rack-Mounting Equipment Rack Mounting MountingAttaching the Brackets Attaching the Adhesive Feet Desktop or Shelf MountingPower Receptacle Connecting to a Power SourceChapter Making Network Connections Connecting Network Devices1. Making Twisted-Pair Connections Connecting to PCs, Servers, Hubs and SwitchesWiring Closet Connections Wiring Closet ConnectionsFiber Optic Devices Making SC Port Connections Making Network Connections Diagnosing Switch Indicators Appendix a TroubleshootingInstallation Power and Cooling ProblemsIn-Band Access Troubleshooting Troubleshooting Appendix B Cables SpecificationsTwisted-Pair Cable and Pin Assignments Figure B-1. RJ-45 Connector Pin Numbers100BASE-TX/10BASE-T Pin Assignments Straight-Through WiringCrossover Wiring Figure B-2. DB-9 Console Port Pin Numbers Console Port Pin AssignmentsConsole Port to 9-Pin COM Port on PC DB-9 Port Pin AssignmentsConsole Port to 25-Pin DCE Port on Modem Console Port to 25-Pin DTE Port on PC Cables Physical Characteristics Appendix C SpecificationsTemperature WeightPower Supply Power ConsumptionSwitch Features Management Features Standards SafetyCompliances EmissionsWarranty 100BASE-FX Extender Module Slide-in Module1000BASE-SX Extender Module ModelSMC6948NMM Appendix D Ordering Information Ordering Information Glossary-1 GlossaryAuto-Negotiation BandwidthGlossary-2 Glossary-3 Glossary-4 Glossary-5 Glossary-6 Index-1 IndexIndex-2 See RPU Index-3Index-4 Page Internet

48-Port specifications

SMC Networks is a recognized leader in providing high-performance networking solutions, and its 48-Port Gigabit Ethernet Switch is a standout product in their lineup. Designed to cater to the demands of growing businesses and enterprise environments, this switch offers robust features and advanced technologies tailored for optimal network performance.

One of the main features of the SMC Networks 48-Port switch is its extensive port availability. With 48 Gigabit Ethernet ports, this switch allows for a substantial number of devices to connect simultaneously, making it an ideal choice for larger networks, data centers, and server farms. The switch supports auto-MDI/MDI-X functionality, which simplifies cable management by automatically detecting and configuring the appropriate cabling for each port.

The SMC Networks switch is built with Layer 2 switching capabilities, providing essential functionality such as VLAN support, link aggregation, and Spanning Tree Protocol (STP). VLANs enable network segmentation, enhancing security and performance by isolating traffic within defined groups. Link aggregation allows multiple connections to be bundled, increasing bandwidth and providing redundancy in the case of a link failure, thus ensuring uninterrupted network access.

In terms of performance, the switch boasts a non-blocking architecture that allows all ports to maintain the maximum data throughput of 1000 Mbps. This is essential for environments that handle large amounts of data traffic, such as video streaming, data backups, and cloud applications. Furthermore, the switch supports Quality of Service (QoS), allowing administrators to prioritize specific types of network traffic. This ensures that high-priority applications receive the bandwidth they need, thus providing a smooth and responsive user experience.

SMC Networks also emphasizes energy efficiency in its design. The switch is built to comply with IEEE 802.3az Energy-Efficient Ethernet standards, which reduces power consumption during periods of low traffic without compromising overall performance.

With a robust metal chassis, the 48-Port switch is not only durable but also designed for easy integration into existing network environments. It supports both rack-mount and desktop configurations, giving users flexibility in deployment.

In summary, the SMC Networks 48-Port Gigabit Ethernet Switch combines high port density, advanced switching capabilities, and energy efficiency, making it an excellent choice for modern networking needs. Its features are tailored to improve connectivity, optimize performance, and enhance network management in any professional environment.
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