Questions about interface traffic statistics

Stephan Seitz <[email protected]> Thu, 20 Feb 2014 10:05:23 +0100
Newsgroups gmane.network.cacti.user
Organization Minas Tirith, Gondor
Message-ID <[email protected]>
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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