Thanks paul & others too, I have changed the value of target in mrtg_lib that monitors the ifinoctets & ifoutoctets by default, now i'm able to monitor the ifinerrors & ifouterrors by default. While reading the mrtg_lib i found the mibs named ifhcinoctets & ifhcoutoctets. can anybody tell me what are they? regards Tarik -- Unsubscribe mailto:mrtg-request@list.ee.ethz.ch?subject=unsubscribe Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi