Cisco Nexus 9000 Series - Page 4

Verifying Software Upgrades 12
Verifying a Nondisruptive Upgrade 12
Troubleshooting Software Upgrades and Downgrades 13
Software Upgrade Ends with Error 13
Upgrading the Cisco NX-OS Software 13
Troubleshooting Software System Reboots 14
Power-On or Switch Reboot Hangs 14
Corrupted Bootflash Recovery 15
Recovery from the loader> Prompt 16
System or Process Restarts 18
Recovering System Restarts 19
Unrecoverable System Restarts 23
Standby Supervisor Fails to Boot 24
Recovering the Administrator Password 24
Using the CLI with Network-Admin Privileges to Recover the Administrator
Password 25
Power Cycling the Device to Recover the Administrator Password 25
Reloading the Device to Recover the Administrator Password 30
CHAPTER 4 Troubleshooting Licensing Issues 33
About Troubleshooting Licensing Issues 33
Guidelines and Limitations for Licensing 33
Initial Troubleshooting Checklist for Licensing 34
Displaying License Information Using the CLI 34
Licensing Installation Issues 35
Serial Number Issues 35
RMA Chassis Errors or License Transfers Between Systems 36
License Listed as Missing 36
CHAPTER 5 Troubleshooting Ports 37
About Troubleshooting Ports 37
Guidelines and Limitations for Troubleshooting Ports 37
Initial Port Troubleshooting Checklist 38
Viewing Port Information 38
Troubleshooting Port Statistics from the CLI 39
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
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