Switch wizard doesn't detect 20gb port speed correctly

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hhlodge
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Joined: Tue Mar 08, 2011 2:13 pm

Switch wizard doesn't detect 20gb port speed correctly

Post 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?
- Kyle
scottwilkerson
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Re: Switch wizard doesn't detect 20gb port speed correctly

Post by scottwilkerson »

Are you using SNMP v 2c ?
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hhlodge
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Joined: Tue Mar 08, 2011 2:13 pm

Re: Switch wizard doesn't detect 20gb port speed correctly

Post by hhlodge »

No, v1.
- Kyle
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nscott
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Re: Switch wizard doesn't detect 20gb port speed correctly

Post 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
Nicholas Scott
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