[INFO] My traffic graphs won't exceed 114 mbit/s

fmangeant

Hi

you may encouter this problem, when you traffic graphs won't exceed ~ 114 mbits/s :

The solution is to use SNMP v2 and 64-bit counters.

First step is done when creating a host :

Second step is done when adding graphs to a host :

Voila ! You graphs now display the correct values :

Super-Mike · Joined: 26 Jan 2006 Posts: 21

Hi.

I’m create graph.

Port 52 switch edge-core (ES3552XA) port 52 <----> port 3 cisco 3560G

I’m using SNMP version 2 and 64 bit counter.

debug:

01/26/2008 12:39:20 PM - CMDPHP: Poller[0] Host[143] DS[4783] SNMP: v2: 192.168.70.97, dsname: traffic_in, oid: .1.3.6.1.2.1.31.1.1.1.6.52, output: 998464678
01/26/2008 12:39:20 PM - CMDPHP: Poller[0] Host[143] DS[4783] SNMP: v2: 192.168.70.97, dsname: traffic_out, oid: .1.3.6.1.2.1.31.1.1.1.10.52, output: 2822791283

My graphics with a switch edge-core (host [143]) are drawn incorrectly

abdulcc · Cacti User Joined: 14 Jul 2006 Posts: 52

I am definitely using snmpV2.

Here are the OID logs
03/07/2008 07:55:02 AM - CMDPHP: Poller[0] Host[2] DS[3445] SNMP: v2: 10.18.2.1, dsname: traffic_in, oid: .1.3.6.1.2.1.2.2.1.10.1, output: 1166060285

03/07/2008 07:55:02 AM - CMDPHP: Poller[0] Host[2] DS[3445] SNMP: v2: 10.18.2.1, dsname: traffic_out, oid: .1.3.6.1.2.1.2.2.1.16.1, output: 3305274964

I do not see any picture on how to set this up. Please advise.

Regards,

fmangeant · Posted: Fri Mar 07, 2008 3:44 am Post subject:

Did you delete / recreate your graphs using the 64-bit graph template ?

abdulcc · Cacti User Joined: 14 Jul 2006 Posts: 52

Where I can I get it?

Thanks

abdulcc · Cacti User Joined: 14 Jul 2006 Posts: 52

I got it fixed. Hopefully It will display properly from now on.

Thanks

Regards

kasimong · Posted: Thu Mar 13, 2008 10:15 am Post subject:

Hi,
on my router it works but not on the connected hosts
ideas ?
regards

wolfgang

fmangeant · Posted: Thu Mar 13, 2008 10:20 am Post subject:

What kind of hosts are you trying to graph ?

kasimong · Posted: Thu Mar 13, 2008 10:49 am Post subject:

kasimong · Posted: Thu Mar 13, 2008 10:59 am Post subject:

BSOD2600 · Posted: Thu Mar 13, 2008 1:20 pm Post subject:

your device doesn't support the 64bit counters.

Super-Mike · Joined: 26 Jan 2006 Posts: 21

My problem was solved.

The problem was that on my L2 switch (Edge-Core)
for storage passed through traffic used 32 bit type, even if on SNMP it is used 64 bit counters

As is known, in 32 bit type it is possible to write 2^32 = 4294967296

switch writes the traffic passed through in this field and if it reaches the maximal value, nulls it.

Speed is calculated: ([current quantity of traffic] - [quantity of traffic in the last poller interrogation]) / time of interrogation

but in fact counter can be nulled more than 1 time
and values will be incorrect

My calculations show, that at 5 minute poller interval maximal speed can be 110 MBit/s.

For this time only can be downloaded 4294967296 bytes.

To solve a problem it is necessary to reduce time of interrogation of devices.
After reduction of time from 5 minutes to 1 minute, trends have come to a normal form.

frdrk · Joined: 06 Jul 2007 Posts: 41

Hi!

First of all; great guide. I have alot of graphs on an old cacti install that is using 32-bit counters that now has started to roll over. Is there any way to change them to 64-bit counters and still use the same rrd/graph so I can have history etc? Or do I need to make completely new graphs?

gigglesworth · Joined: 25 Jan 2006 Posts: 22

Thanks for the tip!

Can anyone tell me how to change my existing graphs to use the 64-bit counters instead of the regular 32-bit counters?

crashergs · Cacti User Joined: 23 May 2008 Posts: 51

You need to delete your old graphs and recreate to 64bit

Question: Can 100MB ports use the 64bit graphs? It will be time consuming to choose each individual 1GB port from switches to use 64bit counters and the 100MB selected to 32bit.