51
NOTE:
•
As a best practice, use H3C QSFP+ transceiver modules and cables for the QSFP+ ports on the
switch. The H3C QSFP+ transceiver modules and cables are subject to change over time. For
the most up-to-date list of QSFP+ transceiver modules, contact your H3C sales representative or
technical support engineer.
•
You can use a QSFP-40G-SR4-MM850 or QSFP-40G-CSR4-MM850 transceiver module to
connect a QSFP+ port to four SFP+ ports. The QSFP+ transceiver module and SFP+ transceiver
modules to be connected must be the same in specifications, including central wavelength and
fiber type.
For more information about specifications for the QSFP+ transceiver modules and cables, see
H3C
Transceiver Modules User Guide
.
10/100/1000Base-T autosensing Ethernet port
Every S5820V2-54QS-GE switch has 10/100/1000Base-T autosensing Ethernet ports.
Table 19 10/100/1000Base-T autosensing Ethernet port specifications
Item Specification
Connector type
RJ-45
Port transmission rate
10/100/1000 Mbps, half/full duplex, MDI/MDI-X autosensing
Transmission medium and max
transmission distance
100 m (328.08 ft) over category-5 twisted pair cable
Compatible standards
•
IEEE
802.3i
•
IEEE
802.3u
•
IEEE
802.3ab
1/10GBase-T autosensing Ethernet port
Every S5820V2-52Q switch has 1/10GBase-T autosensing Ethernet ports.
Table 20 1/10GBase-T autosensing Ethernet port specifications
Item Specification
Connector type
RJ-45
Port transmission rate
1/10 Gbps, full duplex, MDI/MDI-X autosensing
Transmission medium and max
transmission distance
•
55 m (180.45 ft) over category-6 unshielded twisted pair cable
•
100 m (328.08 ft) over category-6 shielded twisted pair cable
•
100 m (328.08 ft) over category-6A or above twisted pair cable
Compatible standards
•
IEEE
802.3ab
•
IEEE
802.3an
To avoid interference between cables, layer cables as follows as a best practice:
•
Use category-6A or above cables and connectors.
•
Do not bundle cables in their first 20 m (65.62 ft).
•
Separate power cables and twisted pair cables at and around the distribution frame.
•
For ports adjacent to one another on the device, the peer ports on the distribution frame is
preferably not adjacent, for example: