[c-nsp] Snmp monitoring of 10GigE Interfaces

[Bill Nash]

Alternatively, make sure you're using the 64 bit counters (ifHCInOctets 
ifHCOutOctets).

See the ifXtable in ftp://ftp.cisco.com/pub/mibs/v2/IF-MIB.my

- billn

On Thu, 10 May 2007, Rhett Bassett wrote:

> Kumar Dasari wrote:
> > I am having rather erratic and inconsistent results for bandwidth usage reports from different SNMP software packages (MRTG, Cacti, Solarwinds etc) when monitoring 10GigE interfaces on Cisco 7609 Routers. For example there is discripency in what the snmp software says what the 5 min bps output rate is, and what the show int te1/1 shows on the router itself. Software is lower always. Any suggestions on how I can fix this?
> 
> Increase your sample rate - you're probably hitting the SNMP counter
> rollover.
> 
> Quoth the Cricket manual
> (http://cricket.sourceforge.net/support/doc/reference.html): "an SNMP
> Counter32 can wrap in under 5 minutes at bandwidths above 100 Mbits,
> it's critical to fetch the data more often, or else RRD will not be able
> to correctly detect and process the counter wrap".
> 
>