Mode Conditioning Patch Cord - HPE Aruba Networking CX 6200 Series Installation And Getting Started Manual

IEEE 802.3-2012. The installation must also meet the Category 5e or Class D limits described in the
ANSI/TIA/EIA 568-C.2 and ISO/IEC 11801 standards, respectively.
Note on HPE Smart Rate 5Gb/s Cable Requirements
The 5 Gb/s Smart Rate operates on most Category 5e and Category 6 cable installations. Category 5e or
Class D installations must meet the ANSI/TIA/EIA 568-C.2 or ISO/IEC 11801 transmission parameter
limits extended to 200MHz. Category 6 or Class E installations must meet their respective transmission
parameter limits as described in ANSI/TIA/EIA 568-C.2 or ISO/IEC 11801.
Also, to transmission performance, 5 Gb/s Smart Rate can be sensitive to alien noise. Such noise can
come from either nearby cables or background noise from the environment. Therefore, cabling must
additionally be tested for Alien Near-End Crosstalk (ANEXT) and Alien Equal-Level-Far-End Crosstalk
(AELFEXT). Depending on the cabling installation, the magnitude of alien crosstalk may further limit the
maximum supported cabling distance.
Hewlett Packard Enterprise recommends doing cable dressing carefully and in compliance with
recommendations in the TIA TSB-155-A and ISO/IEC TR-24750.
Note on 10GBASE-T Cable Requirements
The Category 6 networking cables that work for 1000BASE-T connections may work for 10GBASE-T. The
distance must be less than 55m, and the cable installation must be tested for compliance to IEEE
requirements. But, for the most robust connections, use cabling that complies with the Category 6A or
Category 7 specifications, as described in the TIA-568-C (ANSI/TIA-568-C.2) and ISO/IEC 11801 standards.
10GBASE-T is a sophisticated technology that relies upon high-quality cable installations. It is sensitive to
Alien Near End Crosstalk (ANEXT). This can affect the cable due to other cables placed close to the data
cables. Hewlett Packard Enterprise recommends doing cable dressing carefully and in compliance with
recommendations in the TIA TSB-155A.
Like 1000BASE-T, 10GBASE-T requires testing of all the crosstalk and return loss parameters described
preceding "Note on 1000BASE-T cable requirements", and also ANEXT.
In addition to ANEXT, 10GBASE-T is more sensitive to external electrical noise in the environment.
Hewlett Packard Enterprise recommends keeping radio transmitters and other sources of high
frequency continuous wave radio frequency away from LAN cables.
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. For 10GBASE-T, Category 6 patch cables are
sensitive to movement once link has been established, and could cause link to drop if moved. Therefore,
Hewlett Packard Enterprise recommends using Category 6A patch cables. As an alternative, use cable
management options to tie down (dress) the Category 6 patch cables so they cannot move.
For Conducted and Radiated Immunity in accordance with EN55024, the Aruba switches are limited to
Performance Criteria A with shielded cables (CAT6/6A).

Mode conditioning patch cord

The following information applies to installations in which multimode fiber-optic cables are connected
to a Gigabit-LX port or a 10-Gigabit LRM port. Multimode cable has a design characteristic called
"Differential Mode Delay", which requires the transmission signals be "conditioned" to compensate for
the cable design and thus prevent resulting transmission errors.
Under certain circumstances, depending on the cable used and the lengths of the cable runs, an
external Mode Conditioning Patch Cord may need to be installed between the Gigait-LX or 10-Gigabit
LRM transmitting device and the multimode network cable to provide the transmission conditioning. If
you experience a high number of transmission errors on those ports, usually CRC or FCS errors, you
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