In Cisco ISE, network access devices (NADs) are individually configured under the Network Devices section. Each network device entry includes details such as IP address, shared secret, and optional ports for RADIUS and CoA (Change of Authorization) communications.
Since some of the devices are using nondefault CoA ports, the administrator must specify the correct port information for each device. This configuration ensures that Cisco ISE can properly communicate with and manage these devices using the appropriate CoA port settings.