Re: how can I disable (default enabled) QoS on a radio interface
Not actually. I was running 12.4 mainline without any problems for a almost a year. A month ago I bought an HWIC-AP-AG-A which I needed to run on station-role non-root; ie: the universal client mode.
Upon installation of the module on my C1841 I realized I was needing to upgrade to a T image to enable it since mainline didn't detect the interface at all so there I went to 12.4.22T and this is where my problems started: the router went very very unresponsive even from a console connection including exasperating delays while typing a simple command.
I started to investigate a bit and I noticed two processes consuming more than half the CPU power: dot11 driver and HQF which I later realized had to do something with QoS. Since I don't need this feature at all ... thus my question to begin with because these two processes with 50%+ CPU load didn't feel quite right to me at the time.
After diving into many configuration guides and command references and lacking any answers on how to disable said service, a week ago I went with my configuration disabling one line after another and issuing sh processes cpu after each one and voilÃ¡; my mainline config included the following three lines:
no exception memory ignore overflow processor
no exception memory ignore overflow io
no scheduler heapcheck process memory processor io
Everything returned normal after deleting these lines on the T image.
These commands were placed a year or so ago following recommendations by a Cisco guide on hardening routers which I don't remember the exact name but I can look for it if needed since I know I have it somewhere on my drives.