I have a pair of 7220 controllers that are performing local controller functions at a large campus. Both controllers are configured with name servers and have ip domain lookup enabled. They also both have the same default route. However, the secondary controller can resolve DNS correctly (tested via the ping www.cnn.com command) but the primary controller cannot. When testing using the ping command and a name, I get the following response:
#ping www.cnn.com
Incorrect input! Use 'ping <target-ip-address>'
Any ideas on how to get DNS working? This is preventing our BLE beacons from talking through the controller correctly. Thank you.