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Cisco Nexus 2000 Series Hardware Installation Guide
OL-19013-05
Chapter 1 Using a Fabric Extender with a Cisco Nexus 5000 Series Switch
Cisco Nexus 2248PQ
Caution Be sure that all of the power supply and fan tray modules in the same chassis have the same airflow
direction and that the air intake for those modules is positioned on a cool aisle. If you install a module
that uses a different direction of airflow from the other modules in your system, you will see an error
message. If you position a chassis with its modules taking cooling air from a warm aisle, the switch can
reach an overtemperature state and shut down.
If one power supply is installed in the chassis, but the other power supply slot is empty, you should use
a blank filler panel (N2200-P-BLNK) to cover the empty slot. Figure 1-15 on page 1-14 shows a blank
power supply filler panel.
For power supply specifications, see Table B-1 on page B-2. To replace a power supply, see the
“Removing and Installing Power Supplies” section on page 3-17.
Fan Trays
The Cisco Nexus 2248PQ FEX has one fan tray that is hot swappable during operations. Depending on
whether there is a cold aisle in front of or in back of the chassis, you can order front-to-back airflow or
back-to-front airflow for the fan tray and the power supplies in the same chassis. Table 1-10 lists the part
numbers for each of the fan trays that you can use with this chassis.
To replace a fan tray, see the “Removing and Installing the Fan Tray” section on page 3-20. For LED
descriptions, see Table D-1 on page D-2.
Supported SFP+ Transceivers
The Cisco Nexus 2248PQ Series FEX supports SFP+ Ethernet transceivers. This section includes the
following topics:
• QSFP+ Transceivers, page 1-20
• SFP Transceivers, page 1-36
• SFP+ Copper Cables, page 1-36
Table 1-10 Fan Trays for the Cisco Nexus 2248PQ FEX
Description Part Number
Front-to-back airflow
(port side exhaust, Blue color coded fans)
NXA-FAN-30CFM-F
Back-to-front airflow
(port side cold air intake, Red color coded fans)
NXA-FAN-30CFM-B