Surely it will help to set a max, but btw, sometimes cisco counters jump above the interface capacity. For example, they show up that you transfer an average of 224 MBit/s over a FastEthernet-Interface. For this kind of stuff you really need to set a max of 100 MBit.
Best regards, Stephan Am Dienstag, 28. Januar 2003 10:02 schrieb Serge Maandag: > I regularly clear the interface counters, I do it on the command line > though. > That also clears the in- and outoctets. It never caused peaks in my > graph. > > Do you have a max set for the ds's in your rrd? try rrdtool info to > check. > > Serge > > -----Original Message----- > From: Scott P. Daffron [mailto:[EMAIL PROTECTED] > Sent: Monday, January 27, 2003 6:37 PM > To: [email protected] > Subject: [rrd-users] clearing of counters on Cisco switches > > > > > RRDTOOL gurus, > > We have noticed that our installation of MRTG+RRDTOOL+14all.cgi shows a > huge spike on our Cisco interface graphs whenever a "clear counters" is > done on the device. This is becoming a big problem for us, as we have > just implemented a new NMS which clears all counters once per day. We > run > MRTG with RRDTOOL and 14all.cgi, and this problem is seen in the latest > versions of each. MRTG alone does NOT exhibit this behavior. > > I know this is an issue of the OID counter wrapping, but why is it that > MRTG alone handles this and the RRDTOOL implementation does not. Is > there > a way to tweak RRDTOOL or 14all.cgi to better handle this wrapping > situation? > > More info on my setup: > - Switches are Cisco Cat 4006 and 5XXX > - Our NMS is resetting all port counters by doing an snmpset on > private.1.9.5.1.1.13.0. Most people do not believe me, but this DOES > reset the ifOctets value to 0, by design. > > > Thanks in advance... > > > Scott Daffron > Network Engineer > Sentara Health Care -- Stephan Harren Manager Site Operations MFN-IS ------------------------------- Phone +49 69 90554 153 Fax +49 69 90554 111 Cell +49 173 7011126 -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
