Ruijie RG-S6120 Series Switches Hardware Installation and Reference Guide
Compliant with IEEE 802.3bz, 5GBASE-T requires 100-ohm CAT6 UTP or STP (recommended) with a maximum
distance of 100 meters (328 feet).
The CAT6 UTP wire must meet TIA TSB-5021 requirements. And the recommended cabling rules are as follows:
1) Avoid mixed cabling with other cables, or use metal clapboard in the trunking to isolate different wires.
2) The CAT6 UTP wires shorter than 20 meters meet the minimum requirement of 5GBASE-T.
3) At the outlet end of the device, place the wire separately and ensure parallel cabling. Most of the crosstalks
happen within the 25 m started from the outlet end of the device, so it is suggested not to bind up the wires within
the first 25 m.
4) Bind CAT6 unshielded wire every 160cm-180cm as loosely as possible.
5) The suggested number of wires in a bundle is not more than 7.
6) CAT6 wire connector is replaced with CAT6A wire connector.
2.5GBASE-T
Compliant with IEEE 802.3bz, 2.5GBASE-T requires 100-ohm CAT5e UTP or STP (recommended) with a maximum
distance of 100 meters.
The maximum transmission distance will be less than 50m when CAT5e UTP unshielded wire is exposed in
severe condition and influenced by external crosstalk.
The CAT5e UTP wire must meet TIA TSB-5021 requirements. And the recommended cabling rules are as follows:
1) Avoid mixed cabling with other cables, or use metal clapboard in the trunking to isolate different wires.
2) The CAT5e UTP wires shorter than 50 meters meet the minimum requirement of 2.5GBASE-T.
3) At the outlet end of the device, place the wire separately and ensure parallel cabling. Most of the crosstalks
happen within the 25 m started from the outlet end of the device, so it is suggested not to bind up the wires within
the first 5-25 m.
4) Bind CAT6 unshielded wire every 120cm-180cm as loosely as possible.
5) The suggested number of wires in a bundle is not more than 7.
6) CAT6 wire connector is replaced with CAT6A wire connector.
1000BASE-T
The 1000BASE-T complies with IEEE 802.3ab standard, and uses up to 100m of 100-ohm CAT5, CAT5E or twisted
pairs with higher standard. The 1000BASE-T port uses four pairs of wires for transmission, all of which must be
connected. Figure A-1 shows the connection of the twisted pairs used by the 1000BASE-T port:
Figure A-1 Four twisted pairs of the 1000BASE-T
