Prefix all commands with
https://10.1.1.1/api/?key=API_KEY
type=op&cmd=<request><high-availability><state><functional></functional></state></high-availability></request>
type=op&cmd=<request><high-availability><state><suspend></suspend></state></high-availability></request>
type=op&cmd=<request><high-availability><state><peer><functional></functional></peer></state></high-availability></request>
type=op&cmd=<request><high-availability><state><peer><suspend></suspend></peer></state></high-availability></request>