You could call an external routine that feeds 2 fixed values (preferably 100) to mrtg. It will then create graphs that show a permanent 100% availability and satisfy management needs :-)
Seriously though, availability monitoring may be better obtained by using BigBrother, WhatsUp Gold or tools of that nature, so that you have appropriate monthly report capabilities at your disposal. You *may* be able to use mrtg if you were to poll the loopback interface and graph the OperStatus. mrtg has embedded code to use OperHack which returns 1-up and 0-down instead of the multiple status values normally returned by the OperStatus oid. As the loopback interface is generally up when the switch is available, mrtg should graph it as a gauge value and calculate the daily/weekly/monthly percentage values. If the switch fails and cannot be polled, the loopback interface information cannot be obtained, therefore mrtg *should* record the values as zero. This is theorical interpretation, so please test. There are some drawbacks in this approach because you do not get true availability stats bearing in mind that the polling is by default performed every 5 mins, so outages less than this (ie. a switch reload etc) would not be identified. I am sure others on this list may have alternate or better suggestions, but thats my 5 cents for what its worth. Regards, -- Unsubscribe mailto:[EMAIL PROTECTED] 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
