[rrd-users] Re: RRD Graph and CISCO GSR traffic problem?

[Logg, Connie A.]

The problem is that the 32 bit counters wrap.  See RFC 2233 for  
very clear detailed information.  The mib variables specified in RFC 2233 
require Snmpv2c to read the 64 bit counters.

Now there is one question I have for mrtg and rrdtool
experts.  How is the arithmetic done for the 64 bit counters?

Is it done as 64 bit unsigned arithmetic, or 32 bit floating point?
If it is done as 32 arithmetic, precision is lost.

Thanks, Connie Logg
Connie Logg - Network Analyst - 650-926-2879
Stanford Linear Accelerator Center
MS 97; 2575 SandHill Road; Menlo Park CA 94025
"Happiness is found along the way, not at the end of the road"




-----Original Message-----
From: weider_hsu [mailto:weider_hsu at yahoo.com.tw]
Sent: Wednesday, January 09, 2002 1:10 AM
To: rrd-users at list.ee.ethz.ch
Subject: [rrd-users] RRD Graph and CISCO GSR traffic problem?



Dear all:

I have one problem about graphing SNMP traffic of
CISCO GSR when the traffic was 
higher than 10x M bits/s.
Someone tells me MRTG has the same problem and it can
be resolved by change the SNMP 
version to 2. However, it did not work for my
perl program. Does anyone know what is wrong ?
Thanks for help!

                                                      
                 
                                        Weider Hsu


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