Cabling and technology information | 72
100 Mbps
Operation
Category 5, 100-ohm UTP, or STP cable, complying with
IEEE 802.3u 100BASE-TX specifications.
1000 Mbps
Operation
Category 5, 100-ohm 4-pair UTP or STP cable,
complying with IEEE 802.3ab 1000BASE-T
specifications—Category 5e or better is
recommended.
2.5 Gbps Operation Category 5e, 100-ohm-4-pair UTP, or STP cable,
complying with IEEE 802.bz 1000BASE-T specifications.
5 Gbps Operation Category 5e or better, 100-ohm-4-pair UTP or STP
cable. Category 6 or better is recommended.
10 Gbps Operation Category 6 or 6A, 100-ohm 4-pair UTP cable, or
Category 6A or 7, 100-ohm 4-pair STP cable, complying
with IEEE 802.3an 10GBASE-T specifications.
Twinaxial copper Direct attach cables One-piece devices consisting of a cable with SFP+
connectors permanently attached to each end,
complying with SFF 8431 SFP+ specifications.
Multimode fiber 62.5/125 μm or 50/125 μm (core/cladding) diameter,
low metal content, graded index fiber-optic cables,
complying with the ITU-T G.651 and ISO/IEC 793-2
Type A1b or A1a standards respectively.
1
Single mode fiber 9/125 μm (core/cladding) diameter, low metal content
fiber-optic cables, complying with the ITU-T G.652 and
ISO/IEC 793-2 Type B1 standards.
1
A mode conditioning patch cord may be needed for some Gigabit-LX and 10-Gigabit LRM installations.
Note on Multimode and Single Mode Fiber
Attenuators may be required for some transceiver techs and cable length
Note on 1000BASE-T Cable Requirements
The Category 5 networking cables that work for 100BASE-TX connections also work for 1000BASE-T, as
long as all four-pairs are connected. But, for the most robust connections, use cabling that complies
with the Category 5e specifications. This specification is 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 other end
devices to the patch panels on your site. The patch cables are frequently overlooked when testing cable
and they must also comply with the cabling standards.
Note on HPE Smart Rate 2.5 Gb/s Cable Requirements
The 2.5 Gb/s Smart Rate operates on cable installations that are designed to support 1000BASE-T
operation. The cabling installation must meet the 1000BASE-T link segment characteristics described in
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