[AusNOG] Cacti Graphing @ 100MBit

[matz]

It depends on the polling interval.  A 32 bit counter can record a 
maximum of 4,294,967,295 bytes of data transferred on an interface.  At 
a 5 minute polling interval, this is 114 Mbps (4,294 MB * 8 / 300 sec), 
1 minute polling interval this is 572Mbps (4,294 MB * 8 / 60 seconds) 
before it starts to break.

On 16/11/2013 9:30 PM, PRK wrote:
>
> As a slight digression, I've usually seen a 32 bit counter break 
> between 200 & 300Mbit (IIRC), not at the 100Mbit boundary you're 
> describing.
>
> prk.
>
> On 2013-11-16 21:11, Alex Maclaren wrote:
>
>> Hi Daniel,
>> We had a problem where cacti couldn't graph speeds of over 100mbit in 
>> graphs.
>> We found you have to set the data query data type to the 64-bit 
>> counter type when creating the graph.
>> Hope this helps.
>>
>> Regards,
>> Alex Maclaren
>>
>> On 16/11/2013 7:17 PM, Greg Cockburn wrote:
>>> Hi Daniel,
>>> You might find it is snmpd on the host if it is Linux.
>>> The SNMP daemon doesn't have permissions to get the speed of the 
>>> interface and so defaults to 1000Mbit.
>>> If you add:
>>> interface eth0 6 1000000000
>>> to your snmpd.local.conf file, this will fix the problem.
>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/250549
>>> Of course maybe I am barking up the wrong tree, but this has been a 
>>> problem for me in the past.
>>> Good luck.
>>> Greg.
>>>
>>>
>>> On Fri, Nov 15, 2013 at 11:43 PM, Daniel Watson 
>>> <daniel at glovine.com.au <mailto:daniel at glovine.com.au>> wrote:
>>>
>>>     Hey Noggers
>>>     We use cacti for our bandwidth monitoring
>>>     Recently I have noticed that none of my servers graphs are
>>>     showing the transit peaking over 100mbit which is untrue as all
>>>     servers are on 1GBit ports, I have verified this numerous times,
>>>     but yet cacti won't graph above 100mbit
>>>     Can somebody please tell me how I can fix cacti to graph up to
>>>     1gbit?
>>>     Appreciate the assistance in advance
>>>     D.
>>>
>>>     Sent from my iPad
>>>
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