A-5
Specifications
Cabling and Technology Information
Note on 1000BASE-T Cable Requirements. The Category 5 networking cables
that work for 100BASE-TX connections should also work for 1000BASE-T, as long
as all four-pairs are connected. But, for the most robust connections, you should use
cabling that complies with the Category 5e specifications, as described in Addendum
5 to the TIA-568-A standard (ANSI/TIA/EIA-568-A-5).
Because of the increased speed provided by 1000BASE-T (Gigabit-T), network cable
quality is more important than for either 10BASE-T or 100BASE-TX. Cabling plants
being used to carry 1000BASE-T networking must comply with the IEEE 802.3ab
standards. In particular, the cabling must pass tests for Attenuation, Near-End
Crosstalk (NEXT), and Far-End Crosstalk (FEXT). Additionally, unlike the cables
for 100BASE-TX, the 1000BASE-T cables must pass tests for Equal-Level Far-End
Crosstalk (ELFEXT) and Return Loss.
When testing your cabling, be sure to include the patch cables that connect the switch
and the other end devices to the patch panels on your site. The patch cables are
frequently overlooked when testing cable. The patch cables must also comply with
the cabling standards.
Technology Distance Specifications
Technology Distance Specifications
Technology Supported cable type Multimode fiber
modal bandwidth
Supported distances
100-FX multimode fiber any up to 2,000 meters
1000-T twisted-pair copper N/A up to 100 meters
1000-SX multimode fiber 160 MHz*km
200 MHz*km
400 MHz*km
500 MHz*km
2 - 220 meters
2 - 275 meters
2 - 500 meters
2 - 550 meters
1000-LX multimode fiber
single mode fiber
400 MHz*km
500 MHz*km
N/A
2 - 550 meters
2 - 550 meters
2 - 10,000 meters
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