12-20-2011 01:03 PM - edited 03-07-2019 03:59 AM
The other day 3rd party supplier ran some stats on our Gigabit link between 2 Cisco catalyst 3750Gs.
now the graphs produced showed only a Maximum output of about 100Mbps ( 5 minute intervals) yet when I do a show interface it shows a lot more always 150Mbps and more. So I did my own Perl script doing an "sh interface" every minute and then graphed it, and the results were a lot different to the MRTG results.
Questions: I know MRTG uses SNMP to get the traffic is there a bug in the SNMP, what OID does it use?
does the "sh interface" give the correct results?
I would be interested if anybody else has experienced this variance between MRTG and sh interface
12-20-2011 01:51 PM
On any interface over 100mbs you MUST use 64bit counters, as 100mbs uand below ses 32bit counters. I have no clue about MRTG - as I use Cacti and it works great.
HTH>
12-21-2011 02:27 PM
Please see the enclosed link to previous conversations. I should have looked into it more before I posted the question
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide