Table 1: Power Requirements for the Cisco Nexus 7706 Switch Modules
TypicalMaximumQuantityComponent
——1 or 2
(same
type if
using 2)
Supervisor Modules
137 W265 WSupervisor 2 Enhanced (N77-SUP2E)
110 W150 WSupervisor 3 Enhanced (N77-SUP3E)
——1 to 4
(can mix
types)
F2 I/O Modules
451 W500 W48-port 1- and 10-Gigabit Ethernet I/O module (N77-F248XP-23E)
——F3 I/O Modules
450 W
480 W48-port 1- and 10-Gigabit Ethernet I/O module (N77-F348XP-23)
650 W740 W24-port 40-Gigabit Ethernet I/O module (N77-F324FQ-25)
640 W730 W12-port 100-Gigabit Ethernet I/O module (N77-F312CK-26)
——M3 I/O Modules
500 W
560 W48-port 1- and 10-Gigabit Ethernet I/O module (N77-M348XP-23L)
700 W750 W24-port 40-Gigabit Ethernet I/O module (N77-M324FQ-25L)
800 W1095 W12-port 100-Gigabit Ethernet I/O module (N77-M312CQ-26L)
65
W
80 W3 to 6Fabric Module (N77-C7706-FAB-2)
65
W
85 W3 to 6Fabric Module (N77-C7706-FAB-3)
———Fan Trays
30 W
300 W338 mm Gen 1 Fan Tray (N77-C7706-FAN)
30 W300 W376 mm Gen 2 Fan Tray (N77-C7706-FAN-2)
For example, if you are installing a switch with two Supervisor 2 modules (2 x 265 W), four 48-port 10-Gigabit Ethernet
I/O modules (PID: N77-F248XP-23E) (4 x 500 W), six fabric modules (6 x 150 W) and three fan trays (3 x 600 W), the
power requirements for this switch would be 5230 W.
Maximum power values are used for calculating the power requirements.
Note
Step 2 Determine the number of power supplies needed for the available power requirement by dividing the power requirement
amount (see Step 1) by the output wattage of the power supplies installed in the switch.
For example, if you are installing a switch with 3-kW power supplies and have a consumption of 5230 W, you need two
power supplies (5230 W / 3000 W = 1.74 or 2 power supplies) to operate the switch and all of its modules.
Step 3 Select one of the following power modes to determine the number of additional power supplies required for reserve
power:
Cisco Nexus 7706 Hardware Installation Guide
OL-31330-018
Preparing the Site
Planning for Power Requirements
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