Prepare to upgrade the optical network

Complete these checks for Cisco Optical Network Controller and the target software release:

• Upgrade Cisco Optical Network Controller to the required target release. See Upgrade a standalone Cisco Optical Network Controller deployment.

• Verify that the target software release supports all host and managed-device combinations in the upgrade domain. For more details about the supported releases, see Supported platform and software combinations.

Prepare the software image server and verify network connectivity:

• Upload the required software images to the external SFTP server.

• Verify that the remote path folder has write permissions for uploads.

• Verify that the SFTP server uses SSH version 7.x or 8.x.

• Verify connectivity between Cisco Optical Network Controller, Cisco Optical Site Manager, and the external SFTP server.

• Configure static routes from the devices hosting Cisco Optical Site Manager to the external SFTP server.

• Configure the SFTP server in the SWIMU application in Cisco Optical Network Controller.

Prepare the devices and confirm that the upgrade can proceed:

• Confirm that sufficient storage is available on the Cisco Optical Site Manager hosts and managed devices.

• Resolve upgrade-impacting active alarms, license-compliance conditions, and incomplete IOS XR install operations before starting the upgrade.

• Back up the current Cisco Optical Site Manager and managed-device configurations.

• Plan the activation window so that directly connected devices do not remain on different software releases longer than necessary.

• Verify that the Cisco Optical Network Controller VM time is synchronized with the device backend time.

• Ensure that the target GISO contains the Cisco Optical Site Manager RPM.

• For upgrades from 24.3.1 or 25.1.1 to 26.1.1, ensure that the GISO includes the required bridge SMU.