diff --git a/plugins/router/arris-tg3442 b/plugins/router/arris-tg3442
old mode 100644
new mode 100755
index 35307c74..088b50e5
--- a/plugins/router/arris-tg3442
+++ b/plugins/router/arris-tg3442
@@ -1,49 +1,65 @@
 #!/usr/bin/env python3
 
 """
-# MUNIN Plugin to monitor status of Arris TG3442 / TG2492LG-85
-# and compatible cable modems
-#
-# Connect to the web-frontend and get current DOCSIS status of upstream and
-# downstream channels. (Signal Power, SNR, Lock Status)
-#
-#
-# Requirements:
-#   - BeautifulSoup
-#   - pycryptodome
-#
-# Configuration:
-#   [arris]
-#   env.url http://192.168.100.1
-#   env.username admin
-#   env.password yourpassword
-#
-# Parameters:
-#   url      - URL to web-frontend
-#   username - defaults to "admin"
-#   password - valid password
-#
-#
-# References: https://www.arris.com/products/touchstone-tg3442-cable-voice-gateway/
-#
-#
-#
-# Copyright (c) 2019 Daniel Hiepler <d-munin@coderdu.de>
-#
-# Permission to use, copy, and modify this software with or without fee
-# is hereby granted, provided that this entire notice is included in
-# all source code copies of any software which is or includes a copy or
-# modification of this software.
-#
-# THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
-# IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
-# REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
-# MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
-# PURPOSE.
-#
-#
-# Magic markers
-#  #%# family=contrib
+=head1 NAME
+
+arris - MUNIN Plugin to monitor status of Arris TG3442 / TG2492LG-85
+        and compatible cable modems
+
+=head1 DESCRIPTION
+Connect to the web-frontend and get current DOCSIS status of upstream and
+downstream channels. (Signal Power, SNR, Lock Status)
+
+
+=head1 REQUIREMENTS
+- BeautifulSoup
+- pycryptodome
+
+
+=head1 CONFIGURATION
+
+=head2 Example
+[arris]
+env.url http://192.168.100.1
+env.username admin
+env.password yourpassword
+
+
+=head2 Parameters
+url      - URL to web-frontend
+username - defaults to "admin"
+password - valid password
+
+
+=head1 REFERENCES
+https://www.arris.com/products/touchstone-tg3442-cable-voice-gateway/
+
+
+=head1 AUTHOR
+
+ Copyright (c) 2019 Daniel Hiepler <d-munin@coderdu.de>
+ Copyright (c) 2004-2009 Nicolas Stransky <Nico@stransky.cx>
+ Copyright (c) 2018 Lars Kruse <devel@sumpfralle.de>
+
+
+=head1 LICENSE
+ Permission to use, copy, and modify this software with or without fee
+ is hereby granted, provided that this entire notice is included in
+ all source code copies of any software which is or includes a copy or
+ modification of this software.
+
+ THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
+ IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
+ REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
+ MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
+ PURPOSE.
+
+
+=head1 MAGIC MARKERS
+
+ #%# family=contrib
+
+=cut
 """
 
 import binascii
@@ -134,6 +150,7 @@ def login(session, url, username, password):
     # set session
     r = session.post(f"{url}/php/ajaxSet_Session.php")
 
+
 def docsis_status(session):
     """get current DOCSIS status page, parse and return channel data"""
     r = session.get(f"{url}/php/status_docsis_data.php")
@@ -214,7 +231,7 @@ if __name__ == "__main__":
     ]
 
     # configure ?
-    if len(sys.argv) > 1 and "config" in sys.argv[1]:
+    if len(sys.argv) > 1 and "config" == sys.argv[1]:
         # process all graphs
         for g in graph_descriptions:
             # graph config