Cisco Catalyst 9400

Cisco Catalyst 9400

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System Management Configuration Guide, Cisco IOS XE Bengaluru 17.4.x (Catalyst 9400 Switches)

432

Recover from Corrupt or Missing File Image or in ROMmon Mode

Feature Information for Recovering a Switch

Table of Contents

Default Chapter4
- Table of Contents4
- Setting the System Clock28
- Configuring the Time Zone29
- Configuring Summer Time (Daylight Saving Time)30
- Configuring NTP32
- Configuring a System Name39
- Setting up DNS40
- Configuring a Message-Of-The-Day Login Banner42
- Configuring a Login Banner43
- Managing the MAC Address Table44
- Monitoring and Maintaining Administration of the Device54
- Configuration Examples for Device Administration55
- Additional References for Device Administration58
- Feature History for Device Administration58
CHAPTER 2 Performing Device Setup Configuration59
- Restrictions for Performing Device Setup Configuration59
- Information about Performing Device Setup Configuration59
- How to Perform Device Setup Configuration71
- Configuration Examples for Device Setup Configuration85
- Additional References for Performing Device Setup105
- Feature History for Performing Device Setup Configuration105
CHAPTER 3 Smart Licensing Using Policy107
- Introduction to Smart Licensing Using Policy107
- Information about Smart Licensing Using Policy108
- Supported Products121
- Interactions with Other Features122
- How to Configure Smart Licensing Using Policy: Workflows by Topology128
- Migrating to Smart Licensing Using Policy136
- Task Library for Smart Licensing Using Policy156
CHAPTER 4 Configuring Application Visibility and Control in a Wired Network199
- Enabling Application Recognition on an Interface199
- Creating AVC Qos Policy200
- Applying a Qos Policy to the Switch Port202
- Configuring Wired AVC Flexible Netflow203
- NBAR2 Custom Applications219
- NBAR2 Dynamic Hitless Protocol Pack Upgrade222
- Monitoring Application Visibility and Control224
- Examples: Application Visibility and Control Configuration224
- Basic Troubleshooting - Questions and Answers236
- Additional References for Application Visibility and Control237
- Feature History for Application Visibility and Control in a Wired Network237
CHAPTER 5 Environmental Monitoring and Power Management239
- About Environmental Monitoring239
- Power Management245
- Configuration Examples for Power Supply Modes and Operating States258
- Feature History for Environmental Monitoring and Power Management266
CHAPTER 6 Configuring SDM Templates267
- Information about SDM Templates267
- SDM Templates and Switch Stacks269
- How to Configure SDM Templates269
  - Setting the SDM Template269
- Monitoring and Maintaining SDM Templates270
- Configuration Examples for SDM Templates271
  - Examples: Displaying SDM Templates271
  - Examples: Configuring SDM Templates275
- Additional References for SDM Templates275
- Feature History for SDM Templates275
CHAPTER 7 Configuring System Message Logs277
- Information about Configuring System Message Logs277
- How to Configure System Message Logs279
- Monitoring and Maintaining System Message Logs287
  - Monitoring Configuration Archive Logs287
- Configuration Examples for System Message Logs287
  - Example: Stacking System Message287
  - Example: Switch System Message288
- Additional References for System Message Logs288
- Feature History for System Message Logs288
CHAPTER 8 Configuring Online Diagnostics289
- Information about Configuring Online Diagnostics289
  - Generic Online Diagnostics (GOLD) Tests290
- How to Configure Online Diagnostics293
- Monitoring and Maintaining Online Diagnostics297
- Configuration Examples for Online Diagnostics298
- Additional References for Online Diagnostics300
- Feature Information for Configuring Online Diagnostics300
CHAPTER 9 Managing Configuration Files301
- Prerequisites for Managing Configuration Files301
- Restrictions for Managing Configuration Files301
- Information about Managing Configuration Files301
  - Types of Configuration Files301
  - Configuration Mode and Selecting a Configuration Source302
  - Configuration File Changes Using the CLI302
  - Location of Configuration Files302
  - Copy Configuration Files from a Network Server to the Device303
- How to Manage Configuration File Information308
  - Displaying Configuration File Information308
  - Modifying the Configuration File309
- Copying a Configuration File from the Device to a TFTP Server310
  - What to Do Next311
- Copying a Configuration File from the Device to an RCP Server311
  - Examples312
  - What to Do Next313
- Copying a Configuration File from the Device to the FTP Server313
  - Examples314
  - What to Do Next315
- Copying a Configuration File from a TFTP Server to the Device315
  - What to Do Next316
- Copying a Configuration File from the Rcp Server to the Device316
  - Examples317
  - What to Do Next317
- Copying a Configuration File from an FTP Server to the Device317
  - Examples318
  - What to Do Next319
- Maintaining Configuration Files Larger than NVRAM319
  - Compressing the Configuration File319
  - Storing the Configuration in Flash Memory on Class a Flash File Systems321
  - Loading the Configuration Commands from the Network322
- Copying Configuration Files from Flash Memory to the Startup or Running Configuration323
- Copying Configuration Files between Flash Memory File Systems324
- Copying a Configuration File from an FTP Server to Flash Memory Devices325
  - What to Do Next326
- Copying a Configuration File from an RCP Server to Flash Memory Devices326
- Copying a Configuration File from a TFTP Server to Flash Memory Devices327
- Re-Executing the Configuration Commands in the Startup Configuration File328
- Clearing the Startup Configuration328
- Deleting a Specified Configuration File329
- Specifying the CONFIG_FILE Environment Variable on Class a Flash File Systems330
  - What to Do Next331
- Configuring the Device to Download Configuration Files332
  - Configuring the Device to Download the Network Configuration File332
  - Configuring the Device to Download the Host Configuration File333
- Feature History for Managing Configuration Files335
CHAPTER 10 Secure Copy337
- Prerequisites for Secure Copy337
- Information about Secure Copy337
  - Secure Copy Performance Improvements338
- How to Configure Secure Copy338
  - Configuring Secure Copy338
  - Enabling Secure Copy on the SSH Server339
- Configuration Examples for Secure Copy341
  - Example: Secure Copy Configuration Using Local Authentication341
  - Example: Secure Copy Server-Side Configuration Using Network-Based Authentication341
- Additional References for Secure Copy342
- Feature Information for Secure Copy342
CHAPTER 11 Configuration Replace and Configuration Rollback343
- Prerequisites for Configuration Replace and Configuration Rollback343
- Restrictions for Configuration Replace and Configuration Rollback344
- Information about Configuration Replace and Configuration Rollback344
- How to Use Configuration Replace and Configuration Rollback347
- Configuration Examples for Configuration Replace and Configuration Rollback353
- Additional References for Configuration Replace and Configuration Rollback355
- Feature History for Configuration Replace and Configuration Rollback356
CHAPTER 12 Performing Factory Reset357
- Prerequisites for Performing a Factory Reset357
- Restrictions for Performing a Factory Reset357
- Information about Performing a Factory Reset357
- How to Perform a Factory Reset358
- Configuration Examples for Performing a Factory Reset360
- Additional References for Performing a Factory Reset363
- Feature History for Performing a Factory Reset363
CHAPTER 13 Configuring Secure Storage365
- Information about Secure Storage365
- Enabling Secure Storage365
- Disabling Secure Storage366
- Verifying the Status of Encryption366
- Feature Information for Secure Storage367
CHAPTER 14 BIOS Protection369
- Introduction to BIOS Protection369
- ROMMON Upgrade369
  - Capsule Upgrade370
- Feature History for BIOS Protection370
CHAPTER 15 Software Maintenance Upgrade373
- Restrictions for Software Maintenance Upgrade373
- Information about Software Maintenance Upgrade373
- How to Manage Software Maintenance Updates374
  - Installing an SMU Package374
  - Managing an SMU Package375
- Configuration Examples for Software Maintenance Upgrade376
  - Example: Managing an SMU376
- Additional References for Software Maintenance Upgrade381
- Feature History for Software Maintenance Upgrade381
CHAPTER 16 Working with the Flash File System383
- Information about the Flash File System383
- Displaying Available File Systems383
- Setting the Default File System386
- Displaying Information about Files on a File System386
- Changing Directories and Displaying the Working Directory388
- Creating Directories388
  - Removing Directories389
- Copying Files389
  - Deleting Files390
- Creating, Displaying and Extracting Files390
- Additional References for Flash File System392
- Feature History for Flash File System392
C H a P T E395
Conditional Debug and Radioactive Tracing395
- Introduction to Conditional Debugging395
- Introduction to Radioactive Tracing396
- How to Configure Conditional Debug and Radioactive Tracing396
- Monitoring Conditional Debugging400
- Configuration Examples for Conditional Debugging400
- Additional References for Conditional Debugging and Radioactive Tracing401
- Feature History for Conditional Debugging and Radioactive Tracing401
CHAPTER 18 Consent Token403
- Restrictions for Consent Token403
- Information about Consent Token403
- Consent Token Authorization Process for System Shell Access404
- Feature History for Consent Token405
C H a P T E407
Troubleshooting the Software Configuration407
- Information about Troubleshooting the Software Configuration407
- How to Troubleshoot the Software Configuration416
- Troubleshooting Packet Loss427
- Troubleshooting When Module Not Online428
- Troubleshooting Interface Problems429
- Troubleshooting When a Workstation Is Unable to Log in to the Network429
- Verifying Troubleshooting of the Software Configuration430
  - Displaying OBFL Information430
  - Example: Verifying the Problem and Cause for High CPU Utilization430
- Scenarios for Troubleshooting the Software Configuration432
  - Scenarios to Troubleshoot Power over Ethernet (Poe)432
- Configuration Examples for Troubleshooting Software434
  - Example: Pinging an IP Host434
  - Example: Performing a Traceroute to an IP Host435
- Additional References for Troubleshooting Software Configuration436
- Feature History for Troubleshooting Software Configuration436
CHAPTER 20 Recover from Corrupt or Missing File Image or in Rommon Mode437
- Introduction437
- Recover Switch from a Corrupt or Missing Image in Rommon Mode438
- Recover Switch from a Continous Reboot439
- Recover from a Corrupt or Missing Image442
- Feature Information for Recovering a Switch449
Chapter 21451
- Line Auto Consolidation451
- Feature History for Line Auto Consolidation457

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