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Chapter 4: Cabling the Network Ports
80
Twisted Pair and Fiber Optic Specifications
Twisted Pair
Cable
Specifications
Table 12 lists the cabling specifications for the 10/100/1000Base-T twisted
pair ports.
Note
The auto-MDI/MDI-X feature on the 10/100/1000Base-T ports
automatically configures the MDI/MDI-X setting when a link is
established with an end node. Available when a port is at the default
setting of Auto-Negotiation, this feature allows you to use a straight-
through twisted pair cable when connecting any type of network
device to a port.
Disabling Auto-Negotiation on a port and setting the speed and
duplex mode manually also disables the auto-MDI/MDI-X feature. A
port where Auto-Negotiation has been disabled defaults to MDI-X.
Disabling Auto-Negotiation may require manually configuring a
port’s MDI/MDI-X setting or using a crossover cable.
Table 12. Twisted Pair Cabling and Distances
Speed Cable Type
Maximum
Operating
Distance
10 Mbps Standard TIA/EIA 568-B-compliant
Category 3 or better shielded or
unshielded cabling with 100 ohm
impedance and have a frequency
range that extends to 16 MHz.
100 m (328 ft)
100 Mbps Standard TIA/EIA 568-A-compliant
Category 5 or TIA/EIA 568-B-
compliant Enhanced Category 5 (Cat
5e) shielded or unshielded cabling
with 100 ohm impedance and have a
frequency range that extends to 100
MHz.
100 m (328 ft)
1000 Mbps Standard TIA/EIA 568-A-compliant
Category 5 or TIA/EIA 568-B-
compliant Enhanced Category 5 (Cat
5e) shielded or unshielded cabling
with 100 ohm impedance and have a
frequency range that extends to 100
MHz.
100 m (328 ft)