function fttnGetMacs($ip){
    $ssh = new SSH2($ip);
    if (!$ssh->login('admin', '123')) {
        return "error";
    }

    $ssh->read('Press <RETURN> to get started');
    $ssh->write("n");
    $ssh->read('/*.Username:/', phpseclibNetSSH2::READ_REGEX);
    $ssh->write("54321n");
    $ssh->read('Password:');
    $ssh->write("12345n");
    $ssh->read('/([0-9])*.#/');
    $ssh->write("show macsn");
    $raw_macs = $ssh->read('/([0-9])*.#/');