Cisco Nexus 93120TX, Руководство по установке

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By default, the 40-Gigabit uplink ports operate at 40 Gbps, but you can use the speed-group 10000 command
to change the administrative speed to 10 Gbps. If you change the speed, you must also use a QSFP+-to-SFP+
adapter and a supported SFP+ transceiver in each of the converted SFP+ ports. All of the ports in a group of
ports must operate at the same speed or you will see an error with a "check speed-group config" message.To
return the administrative speed to 40 Gigabits, use the
no speed-group 10000 command.
Statement 1051
—
Laser Radiation
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams
or view directly with optical instruments.
Warning
Downlink Connections
The Cisco Nexus 93120TX switch has 96 downlink ports that connect to servers. Each of these ports supports
100-Megabit, 1-Gigabit, and 10-Gigabit speeds over 10GBASE-T cables.
For a listing of the transceivers and cables that the optical downlink ports support, see http://www.cisco.com/
c/en/us/support/interfaces-modules/transceiver-modules/products-device-support-tables-list.html
For the 10GBASE-T cables, you use RJ-45 connectors on cables that conform to the specifications in the
following table.
Table 1: Supported 10GBASE-T Cables
Supported Length Cable Type
180 feet (55 m) Category 6
328 feet (100 m) Category 6a
328 feet (100 m) Category 7
328 feet (100 m) Category 7a
Guidelines for Connecting Ports
To prevent damage to the fiber-optic cables that can separate from their cables, we recommend that you keep
the transceivers disconnected from their fiber-optic cables when installing the transceiver in the I/O module.
Before removing such a transceiver from the switch, remove the cable from the transceiver.
To maximize the effectiveness and life of your transceivers and optical cables, do the following:
• Wear an ESD-preventative wrist strap that is connected to an earth ground whenever handling transceivers.
The switch is typically grounded during installation and provides an ESD port to which you can connect
your wrist strap.
• Do not remove and insert a transceiver more often than is necessary. Repeated removals and insertions
can shorten its useful life.
Cisco Nexus 93120TX NX-OS Mode Switch Hardware Installation Guide
32
Connecting the Switch to the Network
Downlink Connections