NX-OS boot sequence stuck in loader prompt
Table of Contents
Path in Cisco Documentation#
cisco.com/go/support –> Switches –> Nexus 9000 –> Troubleshooting Guides –> (select NX-OS release) –> “Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release …” –> Troubleshooting Installations, Upgrades and Reboots –> Chapter Contents –> Troubleshooting Software System Reboots –> Recovery from the loader> Prompt.
Assumption 1: NX-OS File in Bootflash#
Loader> dir
<you see for example nxos.9.3.13.bin NX-OS file in the bootflash>
Loader> boot nxos.9.3.13.bin
The system should boot the image. When you get the normal prompt, make sure to set the bootvariable to that NX-OS image:
switch(config)# boot nxos bootflash://nxos.9.3.13.bin
switch(config)# copy run start
Assumption 2: no NX-OS File in Bootflash#
Set a TFTP server on a router and host a valid NX-OS file on it. Configure the TFTP server to provide the image from its bootflash. Example:
IOS-router(config)# tftp-server bootflash://nxos.9.3.13.bin
On the failing Nexus device, mgmt0 interface must be configured from within the loader prompt. The TFTP router must be reachable from the failing switch’s mgmt0 IP address.