Description:
Since the DNS server and the DNS forwarder aren't needed in a WLAN-Controller scenario on a managed access point, an access point with LCOS as of version 10.50 deactivates these settings after obtaining a WLAN profile from the WLAN-Controller. The DNS client in the access point remains functional, if the IP address and a DNS server were obtained via DHCP. Therefore a DNS request to the address WLC-Address can be sent.
In this case the messages Disable DNS forwarding and Disable DNS server are displayed in a CAPWAP-CTRL trace as well as in the status table ls Status/WLAN-Management/Log-Table/ on the access point.
The DNS-Server and the DNS-Forwarder are also deactivated, if only one WiFi module (on Dual radio access points) is operated in Managed mode and the other one in mode Access point.
The DNS-Server and the DNS-Forwarder aren't deactivated on a managed WiFi router.
Impact bei manueller IP-Adress-Zuweisung auf dem Access Point:
Wurde dem Access Point manuell in der Access Point Konfiguration eine IP-Adresse zugewiesen (anstatt diese per DHCP zuweisen zu lassen) und eine DNS-Weiterleitung für die DNS-Auflösung eingerichtet, ist ab LCOS 10.50 keine DNS-Auflösung mehr möglich.
In diesem Fall muss als Workaround in der Konfiguration des Access Points ein DNS-Server als Erster DNS in dem Menü IPv4 → Adressen hinterlegt werden, damit die DNS-Auflösung wieder funktioniert.
