Connectivity Rules; 1000Base-T Cable Requirements; 1000 Mbps Gigabit Ethernet Collision Domain; Table 4-1 Maximum 1000Base-T Gigabit Ethernet Cable Length - Edge-Core ES3526XA Installation Manual

The 1000BASE-SX, 1000BASE-LX, 1000BASE-LH fiber optic ports operate at
1 Gbps, full duplex, with auto-negotiation of flow control. The maximum length for
fiber optic cable operating at Gigabit speed will depend on the fiber type as listed
under "1000 Mbps Gigabit Ethernet Collision Domain" on page 4-5.

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 and 6 specifications include 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
Category 5, 5e, or 6 100-ohm UTP or STP 100 m (328 ft)

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

Fiber Size
62.5/125 micron
multimode fiber
50/125 micron multimode
fiber

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

Fiber Size
9/125 micron
single-mode fiber
Maximum Cable Length
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
Connectivity Rules
Connector
RJ-45
Connector
LC
LC
LC
LC
Connector
4-5
4