D-Link DWS-4026 Product Manual - Page 500

D-Link Unified Access System Software User Manual 12/10/09 Field Signal Strength Noise Level Age Table 321: Detected Client Triangulation Description Received signal strength in dBm. The possible range is -127 to 127. However, realistically, this value is expected to range from -95 to -10. Noise reported on the channel by the non-sentry AP. The possible range is -127 to 127. Time since this AP detected the signal. Viewing Detected Client Roam History The wireless system keeps a record of clients as they roam from one managed AP to another managed AP. A history of up to 10 APs is kept for each client. The Detected Client Roam History page shows the managed APs with which the client has associated. The first entry in the client list is the oldest. After the list fills up, the oldest entry is deleted and all other entries are moved one slot up. Figure 345: Detected Client Roam History Table 322 describes the fields on the Detected Client Roam History page. Table 322: Detected Client Roam History Field Description MAC Address MAC address of the detected client. AP MAC Address MAC Address of the managed AP to which the client authenticated. Radio Interface Number Radio Number to which the client is authenticated. VAP MAC Address SSID New Authentication VAP MAC address to which the client roamed. SSID Name used by the VAP. A flag indicating whether the history entry represents a new authentication or a roam event. Age Time since the history entry was added. Detected Client Pre-Authentication Summary To help authenticated clients roam without losing sessions and needing to re-authenticate, wireless clients can attempt to authenticate to other APs within range that the client could possibly associate with. For successful pre-authentication, the target AP must have a VAP with an SSID and security configuration that matches that of the client, including MAC authentication, encryption method, and pre-shared key or RADIUS parameters. The the AP that the client is associated with captures all pre-authentication requests and sends them to the switch. Page 500 Monitoring and Managing Intrusion Detection Document 34CSFP6XXUWS-SWUM100-D7