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Switch wizard doesn't detect 20gb port speed correctly
Posted: Mon Dec 31, 2012 10:11 am
by hhlodge
We have a HP Procurve switch with a two 10 Gbps ports linked via LACP. An SNMP walk shows the port correctly at 20000 Mbps, but the wizard is showing it at 4.29 Gbps. Any thoughts? I suspect I can just change this in mrtg.conf, yes?
Re: Switch wizard doesn't detect 20gb port speed correctly
Posted: Wed Jan 02, 2013 11:11 am
by scottwilkerson
Are you using SNMP v 2c ?
Re: Switch wizard doesn't detect 20gb port speed correctly
Posted: Thu Jan 03, 2013 10:02 am
by hhlodge
No, v1.
Re: Switch wizard doesn't detect 20gb port speed correctly
Posted: Thu Jan 03, 2013 10:14 am
by nscott
v1 doesn't support 64 bit counters and you will have to use 64 bit counters if you wish to fetch numbers over ~4.29 billion (this is the unsigned 32 bit maximum number.) In order to do that you'll need to get rid of the mrtg configuration currently in place for the 20gb device, of which the steps are outlined in this document.
http://assets.nagios.com/downloads/nagi ... Router.pdf