On Monday 24 March 2003 10:43 am, George Chelidze wrote: > Once again: > > definition_0: > unknaszero - Log unknown data as zero instead of the default behaviour > of repeating the last value seen. Be careful with this, often a flat > line in the graph is much more obvious than a line at 0. > > definition_1: (from faq.html) > The problem is that MRTG doesn't know *why* the data didn't come back, > all it knows is that it didn't come back. It has to do something, and it > assumes it's a stray lost packet rather than an outage. > > fact_0: > when some interface is down, interface data isn't available and nas > returns error "noSuchName", Options include "unknaszero", graphs do not > update until interface is still up. > > The data is unknown at least in two cases: > > 1. data didn't came back > 2. nas returned "noSuchName" > > according to definition_0 in both cases 0 should be graphed. fact_0 > shows the different action.
I use MRTG with RRDTool I want to make the rrdtool to store ZERO instead of the famous NaN Also, I want to graph the sum of multiple interfaces using the summing capability of MRTG, but when one of the interfaces is down ( or doesn't return data ) the porcess stops. Does using unknaszero is the way to solve this problem, and gives me a way to make the sums ?? Again, my question is specific to using MRTG with RRDTool. Regards Mohamed Eldesoky -- Person who say it cannot be done should not interrupt person doing it. --Chinese Proverb -- 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
