CHAPTER 3
Troubleshooting Installations, Upgrades, and
Reboots
This chapter contains the following sections:
•
About Upgrades and Reboots, page 11
•
Upgrade and Reboot Checklist, page 11
•
Verifying Software Upgrades, page 12
•
Verifying a Nondisruptive Upgrade, page 12
•
Troubleshooting Software Upgrades and Downgrades, page 13
•
Troubleshooting Software System Reboots, page 14
About Upgrades and Reboots
Upgrades and reboots are ongoing network maintenance activities. You should try to minimize the risk of
disrupting the network when performing these operations in production environments and to know how to
recover quickly when something does go wrong.
This publication uses the term upgrade to refer to both Cisco NX-OS upgrades and downgrades.Note
Upgrade and Reboot Checklist
Use the following checklist to prepare for an upgrade or reboot:
DoneChecklist
Read the Release Notes for the release to which you are upgrading or downgrading.
Ensure that an FTP or TFTP server is available to download the software image.
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
11