Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
On the MX85 it’s unlikely you “need magic” for a basic RJ45 link—if port 3 shows no link light even when plugged into a known-good switch or device, that already points more toward a physical layer issue than configuration. First, double-check you’re...