100 Managed Layer 3 Switch Installation Guide

ONNECTIVITY

ULES

2-7

Connectivity Rules

When adding hubs (repeaters) to your network, please follow the standard

connectivity rules for Ethernet or Fast Ethernet. However, note that

because switches break up the path for connected devices into separate

collision domains, you should not include the switch or connected cabling

in your calculations for cascade length involving other devices.

1000 Mbps Gigabit Ethernet Collision Domain

Maximum Fiber Optic Cable Distance for 1000BASE-SX

Fiber Size Fiber Bandwidth Maximum Cable Length

62.5/125 micron 160 MHz/km 2-220 m (7-722 ft)

200 MHz/km 2-275 m (7-902 ft)

50/125 micron 400 MHz/km 2-500 m (7-1641 ft)

500 MHz/km 2-550 m (7-1805 ft)

Maximum Fiber Optic Cable Distance for 1000BASE-LX

Fiber Size Fiber Bandwidth Maximum Cable Length

9/125 micron N/A 2 m - 10 km (7 - 32808 ft)

Maximum Cable Distance for 1000BASE-T

Type Connector Maximum Cable Length

Cat. 5, 5e, or 6

100-ohm UTP

RJ-45 100 m (328 ft)

Maximum 1000BASE-ZX Fiber Optic Cable Distance

Fiber Diameter Fiber Bandwidth Cable Length Range

9/125 micron single-mode

fiber (SMF)

N/A 70* - 100 km (43.5 - 62.1 miles)

* For link spans exceeding 70 km, you may need to use premium single mode fiber

or dispersion shifted single mode fiber.