[SOLVED] 64-bit counter graphs : the usual don't work

[laedrus]

Hello there,

I am having some problems with cacti graphs, the values are very below the expected, i am collecting data from a Cisco Catalyst 3750 from its SNMP, it is well configured, because cacti sees all interfaces and VLANs, i can even do a "normal" graph, but as i said above, the values are strange, always below 2 Kbps.

This problem was expected, other people before me have experienced that.

So i saw in this forum, that the solution was to create graphs with 64 bit counters.

I tried this, but the graph is simply in blank, and i had waited one day for data collection, it makes me think that there is no data about this to be collected, or some problem in this way.

Finally the question: what s the difference about the "normal" graph, and the graph with 64-bit counters?

[gandalf]

64 bit counters are reported using different OIDs. It's not mandatory to support those. So, unfortunately, you will find devices that only report the standard interface counters.
To verify, please goto "System Utilities -> View Poller Cache", filter for your host and find those OIDs.
Then, perform

Code: Select all

snmpwalk -c ... -v2c <device> .1.3.....

(replace with the OID found in the Poller Cache). If you don't get data, even cacti won't perform a miracle here
Reinhard

[laedrus]

It looks like the 64 bit counters "supports reading" of speeds up to 114 Mbps, and this 64 bit counters are an implementation in the SNMP 2c protocol, after i configured it on the cisco, everything goes fine and i graph speeds nearly 500 Mbps, admin, can "solve" this topic, or remove if you wish.

[halo13]

Seeing that my problem is similar I'll just post here...

The device being polled is a Juniper IDP box. When graphing a single interface traffic I'm most likely getting a counter rollover with a 32-bit counter, however graph with a 64-bit counter is blank. Here's snmpwalk output:

$ snmpwalk -c <community> -v2c <ip> .1.3.<snip>6.4
IF-MIB::ifHCInOctets.4 = Counter64: 167120586339015

$ snmpwalk -c <community> -v2c <ip> .1.3.<snip>10.4
IF-MIB::ifHCOutOctets.4 = Counter64: 0

OIDs are from the poller cache. Cacti is on RHEL5 box.

Looks like I'm getting data from the device but it's not being graphed. Any suggestions?

[laedrus]

I've passed for it too.

It seems that you configured on the polled device, only SNMP V1

Try to enable or configure a SNMP 2c community, this solved my problem.

I saw a comparative table of versions of SNMP, and it seems that 64 bit counters are an implementation of version 2c