In-service Software Upgrade

• 1 In-Service Software Upgrade
  • 1.1 In-Service Software Upgrade Overview
  • 1.2 ISSU Limitations and Considerations
  • 1.3 Recommended Stack Topology for ISSU
  • 1.4 How ISSU Works When Upgrading Stack Units
    • 1.4.1 Pre-ISSU Compatibility Checks for a Traditional Stack
  • 1.5 Upgrading a Stack with ISSU
  • 1.6 ISSU Errors
  • 1.7 Manual Error Recovery