SMC Networks SMC8126PL2-F 1000BASE-T Cable Requirements, Mbps Gigabit Ethernet Collision Domain

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Connectivity Rules 4

1000BASE-T Cable Requirements

All Category 5 UTP cables that are used for 100BASE-TX connections should also work for 1000BASE-T, providing that all four wire pairs are connected. However, it is recommended that for all critical connections, or any new cable installations, Category 5e (enhanced Category 5) or Category 6 cable should be used. The Category 5e specification includes test parameters that are only recommendations for Category 5. Therefore, the first step in preparing existing Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3-2005 standards.

1000 Mbps Gigabit Ethernet Collision Domain

Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length

Cable Type				Maximum Cable Length			Connector
Category 5, 5e, 6 100-ohm UTP or STP				100 m (328 ft)			RJ-45

Table 4-2 Maximum 1000BASE-SX Gigabit Ethernet Cable Length

Fiber Size		Fiber Bandwidth				Maximum Cable Length		Connector

62.5/125 micron		160 MHz/km				2-220 m (7-722 ft)		LC
multimode fiber
multimode fiber		200 MHz/km				2-275 m (7-902 ft)		LC
		200 MHz/km				2-275 m (7-902 ft)		LC

50/125 micron multimode		400 MHz/km				2-500 m (7-1641 ft)		LC
fiber
fiber		500 MHz/km				2-550 m (7-1805 ft)		LC
		500 MHz/km				2-550 m (7-1805 ft)		LC

Table 4-3 Maximum 1000BASE-LX Gigabit Ethernet Cable Length

Fiber Size		Fiber Bandwidth				Maximum Cable Length		Connector

9/125 micron		N/A				2 m - 5 km (7 ft - 3.2 miles)		LC
single-mode fiber
Table 4-4 Maximum 1000BASE-ZX Gigabit Ethernet Cable Length

Fiber Size		Fiber Bandwidth				Maximum Cable Length		Connector

9/125 micron		N/A				70 km - 100 km		LC
single-mode fiber						(43 - 62 miles)

Note: For link spans exceeding 70 km, you may need to use premium single mode fiber or dispersion shifted single mode fiber.

100 Mbps Fast Ethernet Collision Domain

Table 4-5 Maximum Fast Ethernet Cable Length

Type	Cable Type	Max. Cable Length	Connector

100BASE-TX	Category 5 or better 100-ohm UTP or STP	100 m (328 ft)	RJ-45

4-5

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Contents Installation Guide TigerSwitch 10/100/1000 Installation Guide Page Warranty and Product Registration Compliances and Safety Warnings CE Mark Declaration of Conformance for EMI and Safety EEC Safety Compliance France and Peru only France et Pérou uniquement Francia y Perú únicamente Vii Advertencias y mensajes de precaución Purpose Page Contents Appendix a Troubleshooting Contents Tables Figures Xvi Front Panel Switch Architecture Power-over-Ethernet CapabilityNetwork Management Options 10/100/1000BASE-T Ports Description of HardwareSFP Slots Port and System Status LEDsLED Mode PoE/Link Button Optional Redundant Power UnitPower Supply Socket Connectivity Features and BenefitsExpandability PerformanceNetwork 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 Installing the Switch Selecting a SiteEthernet Cabling Equipment Checklist Package ContentsOptional Rack-Mounting Equipment 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 Making Network Connections Connecting Network DevicesTwisted-Pair Devices Cabling GuidelinesNetwork Wiring Connections Connecting to PCs, Servers, Hubs and SwitchesFiber Optic SFP Devices Network Wiring ConnectionsMaking Connections to SFP Transceivers Connectivity Rules1000BASE-T Cable Requirements Mbps Gigabit Ethernet Collision DomainMbps Fast Ethernet Collision Domain Mbps Ethernet Collision Domain Cable Labeling and Connection RecordsAppendix a Troubleshooting Diagnosing Switch IndicatorsPower and Cooling Problems In-Band Access InstallationAppendix B Cables Twisted-Pair Cable and Pin Assignments10BASE-T/100BASE-TX Pin Assignments Crossover Wiring Straight-Through WiringTwisted-Pair Cable and Pin Assignments B 1000BASE-T Pin AssignmentsCable Testing for Existing Category 5 Cable Adjusting Existing Category 5 Cabling to Run 1000BASE-TFiber Standards Dispersion-Shifted Fiber Cables Physical Characteristics Appendix C SpecificationsManagement Features Switch FeaturesCompliances StandardsSpecifications Appendix D Ordering Information Ordering Information 10BASE-T GlossaryCSMA/CD LED UTP Numerics IndexIndex-2 Page 150200000032A R01