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This also came in handy for WLCs and APs that have expired certificates. Had the same issues with the handshake failing (assume due to expired certs). NMSP up but always "inactive" (after years of it working correctly). Disabling NMSP authenticati...
Within DHCP option 43 you can add any number of controller IP addresses. I have not tested if this works or not, but the premise is if the first controller in the list is not available it will use the next.To configure IOS DHCP server with option 43...
If you have msl qos enabled on your switches, you should also add the command:mls qos trust dscpon all uplinks and connections to Access Points. There is a doc that isn't very easy to follow but explains how it works:http://www.cisco.com/en/US/partn...
If you look closely at that document, you will see that the DSCP is preserved when traffic is coming from the AP to the controller. I was actually working on a QoS Policy yesterday and can confirm that. The 802.1p value of 7 I believe will be in pl...
