I’ve tried to upgrade a number of my lab devices using DNAC today. Generally speaking, it works perfectly fine, when everything is compatible (remember my note about Greenfield deployments in the last blog post?). I’ve managed to upgrade three Catalyst 3850 switches without any issues. All switches were running IOS-XE version 16.6.4 prior to upgrade and were upgraded to 16.6.4a.
The following SWIM methods have been tried:
- Distribution, followed by instant Activation
- Distribution, followed by delayed Activation
- Distribution only, followed by Activation as a separate task