Cisco N9396Y12C-SE1 NX-OS Mode Switch Hardware Installation Guide

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Start the switch

Updated: January 22, 2026

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Overview

Start the switch to verify that it is booting up without issues.

Start the switch by connecting it to its dedicated power source. If you need n + n redundancy, connect each power supply in a switch to a different power source.

Note

This equipment is designed to boot up in less than 30 minutes, dependent on its neighboring devices being fully up and running.

Before you begin

  • The switch must be installed and secured to a rack or cabinet.

  • The switch must be adequately grounded.

  • The rack must be close enough to the dedicated power source so that you can connect the switch to the power source by using the designated power cables.

  • You have the designated power cables for the power supplies that you are connecting to the dedicated power sources.

    Note

    Depending on the outlet receptacle on your AC power distribution unit, you might need an optional jumper power cord to connect the switch to your outlet receptacle.

  • The switch is not connected to the network (this includes any management or interface connections).

  • The fan and power supply modules are fully secured in their chassis slots.

Procedure

1.

(Optional) For any AC power supply, do this:

  1. Using the recommended AC power cable for your country or region, connect one end to the AC power supply.

  2. Connect the other end of the power cable to the AC power source.
2.

(Optional) For any LV DC power supply:

  1. Turn off the circuit breaker for the power source.

  2. When using an LV DC power supply that does not use a lug, connect the supplied wiring harness to the source. Or connect the user-supplied wires to the LV DC power source.

  3. When using an LV DC power supply that does not use a lug, connect the attached plug of the supplied wiring harness to the power supply. Or attach the lugs of the user supplied wires to the power supply.

  4. If there is a safety cover for the power source terminals, place and secure it over the terminals.

  5. Turn on the power at the circuit breaker for the DC power source.
3.

Verify that the power supply LED is on and green.
4.

Listen for the fans; they should begin operating when the power supply is powered.
5.

After the switch boots, verify that these LEDs are lit:

  • On the fan modules, the Status (STA or STS) LED is green.

    If a fan module Status LED is not green, try reinstalling the fan module.

  • After initialization, the switch chassis Status (labeled as STA or STS) LED is green.
6.

Verify that the system software has booted and the switch has initialized without error messages.

A setup utility automatically launches the first time that you access the switch and guides you through the basic configuration. For instructions on how to configure the switch and check module connectivity, see the appropriate Cisco Nexus 9000 Series Configuration Guides .