Connectivity Rules; 1000Base-T Cable Requirements; 1000 Mbps Gigabit Ethernet Collision Domain; Maximum 1000Base-T Gigabit Ethernet Cable Length - Alcatel OMNISTACK LS 6200 Getting Started Manual

3
Making Network Connections

Connectivity Rules

When adding hubs (repeaters) to your network, please follow the connectivity rules
listed in the manuals for these products. 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.

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 802.3ab standards.

1000 Mbps Gigabit Ethernet Collision Domain

Table 3-1. Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type
Category 5, 5e, 6 100-ohm UTP or STP
Table 3-2. Maximum 1000BASE-SX Gigabit Ethernet Cable Length
Fiber Size
62.5/125 micron
multimode fiber
50/125 micron multimode
fiber
Table 3-3. Maximum 1000BASE-LX Gigabit Ethernet Cable Length
Fiber Size
9/125 micron
single-mode fiber
3-20
Maximum Cable Length
100 m (328 ft)
Fiber Bandwidth Maximum Cable Length
160 MHz/km 2-220 m (7-722 ft)
200 MHz/km 2-275 m (7-902 ft)
400 MHz/km 2-500 m (7-1641 ft)
500 MHz/km 2-550 m (7-1805 ft)
Fiber Bandwidth Maximum Cable Length
N/A 2 m - 5 km (7 ft - 3.2 miles) LC
Connector
RJ-45
Connector
LC
LC
LC
LC
Connector