Upgrading a Cisco XR router involves several steps to ensure a smooth transition and minimize downtime. It’s essential to follow best practices and perform backups before proceeding with the upgrade Environment Cisco NCS540 router with XR 7.7.2 installed Target version XR7.7.21 Upgrade via TFTP server Preparation Upgrade Procedure Check where to put the Image, switch … Continue reading How to Upgrade Cisco XR Router