Cisco IOS Release 12.1

• Cross-Platform Release Notes for Cisco IOS Release 12.1, Part 1: System Requirements
  Includes supported platforms, supported feature sets, and general release information.

• Cross-Platform Release Notes for Cisco IOS Release 12.1, Part 2: Platform-Specific Information
  Includes memory recommendations, supported hardware, feature set tables, and platform-specific notes.

• Cross-Platform Release Notes for Cisco IOS Release 12.1, Part 3: New Feature Descriptions and Important Notes

• Cross-Platform Release Notes for Cisco IOS Release 12.1, Part 4: Related Documentation
  Related Documentation

• Cross-Platform Release Notes for Cisco IOS Release 12.1, Part 5: Caveats
  All platforms - Severity 1 & 2 open and resolved caveats for Release 12.1