Connectivity Rules; 1000Base-T Cable Requirements; 1000 Mbps Gigabit Ethernet Collision Domain; Table 4-1 Maximum 1000Base-T Gigabit Ethernet Cable Length - SMC Networks SMC TigerSwitch 10/100 SMC6128L2 Installation Manual

M N
AKING ETWORK

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
4-6
C
ONNECTIONS
Maximum Cable
Length
100 m (328 ft)
Connector
RJ-45