The device ESN (Electronic Serial Number) is a unique identifier that is used by the CloudCampus cloud management platform to determine the tenant to which a device belongs. The device ESN is bound to a tenant when a device is added to the platform.

FF02::18C is an IPv6 multicast address. An IPv6 multicast address starts with FF and identifies a group of interfaces that belong to the same multicast group. The other options are not IPv6 multicast addresses. 2222::11 is an IPv6 unicast address, FE80::A is an IPv6 link-local address, and FC00::1 is an IPv6 unique local address.

Satellite positioning can achieve high positioning accuracy in outdoor scenarios, but not in indoor scenarios. This is because satellite signals are easily blocked or interfered by buildings, walls, ceilings, and other obstacles in indoor environments.

Fingerprint-based positioning technology is a method that uses the signal strength or phase difference of wireless signals to locate objects. There are two types of fingerprint-based positioning technology: virtual fingerprint-based positioning and real fingerprint-based positioning. In virtual fingerprint-based positioning, the positioning engine generates a virtual fingerprint library through calculations based on the AP deployment and environment information. In real fingerprint-based positioning, the fingerprint map is obtained through onsite information collection.

With protocol trace, iMaster NCE-CampusInsight displays protocol-level interaction details at theAP,WAC, andACphases for wireless users.