Re: Questions about interface traffic statistics

You need to use the 64 bit counter.  The number of bits you're transferring
is exceeding the capacity of the 32 bit counter and it's rolling over
before your 5 minute poll.

I use 64 bit for any interface over 100Mb.  Actually, I use it for
everything because there's no downside for devices that report back for
ifHCInOctets and ifHCOutOctets.

Tom


On Thu, Feb 20, 2014 at 4:05 AM, Stephan Seitz <
[email protected]> wrote:

> Hi!
>
> I'm using cacti 0.8.8a together with Debian 7 and have some questions
> concerning interface traffic statistics.
>
> The poller runs every five minutes. The system has two gigabit network
> interfaces configured as bonding device. Via SNMP I'm polling bond0
> together with the two physical interfaces using "In/Out Bytes with Total
> Bandwidth".
>
> Now I notice that the numbers in cacti are much lower than compared with
> the ifconfig output. And the total values of bond0 are not the sum of the
> physical interfaces.
> E.g. choosing a time range of 16 hours the cacti values are:
>         - bond0: total in:  79GB, total out: 123GB
>         - eth0:  total in:  36MB, total out: 167GB
>         - eth1:  total in: 120GB, total out:  15MB
>
> Calculating the traffic with the help of the ifconfig output I'll get:
>         - bond0: total in: 376GB, total out: 424GB
>         - eth0:  total in:  34MB, total out: 424GB
>         - eth1:  total in: 376GB, total out:  14MB
>
> So something is wrong. There is the possibility to chose "In/Out Bytes
> (64bit counter)", but then I don't have the total bandwidth values. Could
> this be a counter problem?
>
> Shade and sweet water!
>
>         Stephan
>
> --
> | Stephan Seitz          E-Mail: [email protected] |
> | Public Keys: http://fsing.rootsland.net/~stse/keys.html |
>
>
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