Cacti Graphs Spikes to Petabyte

[pradeeps]

Hello Folks,

I am noticing an unusual spike in "Interface - Traffic" graph. Looks like its following a cycle where it goes up to petabyte on "Inbound/Outbound" traffic and drops. However, the graph generated by the real-time plugin for the same interface doesn't show that behavior. Any idea what could be the reason?
Script/Command: 8058
SNMP: 84014
SNMP Query: 44916
Script Query: 3
Script - Script Server (PHP): 13
Total: 137004

Graph with Spike

spike.JPG (48.98 KiB) Viewed 739 times

Realtime Plugin Graph

realtime.JPG (46.57 KiB) Viewed 739 times

[TheWitness]

Likely you created a 32bit graph, or you have the wrong polling interval/data source profile mix.

[pradeeps]

I used "In/Out Bits(64-bit Counter)" like all ours devices.I also tried deleting the graph with data source and re-add it but the the issue still occurs.

[netniV]

Your next step would be to manually walk the appropriate OIDs and check that the values are coming back properly. If they are not, that suggests a device issue and we have seen that before. If they do come back OK, that suggests some form of conversion issue of the data within Cacti or a modified CDEF that has an unexpected impact.

[pradeeps]

I agree. I ran snmpwalk every 5 minutes for 24 hours and couldn't find any hit. What I dont understand is, how come graph from a real-time plugin, not capturing any of these spike? Afterall it uses the same template/conversion.

[pradeeps]

Thank you. I will look into it.