Hi Shane, I suspect you don't use the 64-bit counters but the default 32-bit counters in the MRTG config file. See http://people.ee.ethz.ch/~oetiker/webtools/mrtg/mrtg-reference.html#item_version for details.
To change to 64-bit counters using configmaker have a look at http://people.ee.ethz.ch/~oetiker/webtools/mrtg/cfgmaker.html#item__2d_2dsnmp_2doptions__3a_5bport_5d_5b_3a_5btimeout Hth, Jan. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shane Presley Sent: Thursday, April 07, 2005 2:46 PM To: [EMAIL PROTECTED] Subject: [mrtg] Cisco Switch: Interfaces don't add up right Hello, We're using MRTG to watch a 26 port Cisco switch. It has 24 100mb ports, and 2 1000mb ports. Basically the 100mb ports are connected to Unix servers, and the 1000mb ports are uplinks connected to our backup media servers (for tape backup). So each night our servers back themselves up by sending data to the uplink port (where the media server is) The MRTG configs look right. It detected the 24 ports as 12.5MB/s and the uplinks as 125MB/s. When we fire off our backups at midnight, we see lots of ports max out (95% utilization or about 11MB/s). They all are sending data to our uplink port (media server). But what's odd is the gigabit uplink port only shows 10% utilization (11MB/s). Since we have multiple ports sending data at exactly the same time (midnight) and MRTG accurately reflects this, we expected to see an aggregate bandwidth to the uplink of about 40MB/s. If you look at the graphs and add up the various servers sending 11MB/s in, how can the uplink also only be doing 11MB/s out. Sorry if that's a little confusion, wasn't sure how to explain it. Thanks, Shane -- 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 _________________________________________________________ Het ministerie van Sociale Zaken en Werkgelegenheid sluit elke aansprakelijkheid uit in verband met het niet juist, onvolledig of niet tijdig overkomen van de informatie in deze e-mail. Aan dit bericht kunnen geen rechten worden ontleend. Dit bericht is alleen bestemd voor de geadresseerde. Indien dit bericht niet voor u bestemd is, verzoeken wij u dit onmiddellijk aan ons te melden en de inhoud van dit bericht te vernietigen. _________________________________________________________ The ministry of Social Affairs and Employment is not liable for any incorrect or incomplete transmission of the information in this e-mail or for any delay in its receipt. This message shall not constitute any obligations. This message is intended solely for the addressee. If you have received this message in error, please inform us immediately and delete its content. _________________________________________________________ -- 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
