This read-only INTEGER indicates the configured priority of a constituent port within a Multi-Chassis Link Aggregation Group (MC-LAG), identified in the table by the MC-LAG name, slot, and port. Admins use it to understand how individual member ports are ranked for selection purposes within the aggregate link group. For example, an admin comparing priorities across multiple constituent ports on an MC-LAG would expect the lower (or higher, per the vendor's convention) priority port to be preferred when the LAG must select among available links.