def METHOD_NAME(dvs, idx, cfg):
    prepare_exa_env(dvs, idx)
    run_dir = "/var/run/exabgp"
    mkdir(run_dir)
    fifo_in_path  = "%s/exabgp.%d.in"  % (run_dir, idx)
    fifo_out_path = "%s/exabgp.%d.out" % (run_dir, idx)
    remove(fifo_in_path)
    remove(fifo_out_path)
    os.mkfifo(fifo_in_path)
    os.mkfifo(fifo_out_path)
    os.chmod(fifo_in_path,  0o666)
    os.chmod(fifo_out_path, 0o666)
    print("!!! Start exabgp instance %d" % idx)
    cmd = "exabgp -d --env %s %s" % (get_target_env(idx), cfg)
    print("Cmd is ___ %s ___" % cmd)
    return dvs.servers[idx].runcmd_async(cmd)