Thanks for the reply. I have attached the grepped output of the poller above. I am really not sure why sometimes I get eth0bps and others eth0negative on occasion.
I have ran the poller every 5 seconds with debug, and grepped the eth0 interface in/out octets and calculated the difference for each 5 second run for a specific VM
Count Difference
ifInOctets.2 = 3451622675
ifInOctets.2 = 3470338065 18715390
ifInOctets.2 = 3491320446 20982381
ifInOctets.2 = 3510886710 19566264
ifInOctets.2 = 3533200359 22313649
ifInOctets.2 = 3554484595 21284236
ifInOctets.2 = 3605333884 50849289
ifInOctets.2 = 3625814384 20480500
ifInOctets.2 = 3657292211 31477827
ifInOctets.2 = 3679268370 21976159
ifInOctets.2 = 3700787418 21519048
Count Difference
ifOutOctets.2 = 1777841236
ifOutOctets.2 = 3459858673 1682017437
ifOutOctets.2 = 803618875 -2656239798
ifOutOctets.2 = 2382803055 1579184180
ifOutOctets.2 = 4028147832 1645344777
ifOutOctets.2 = 1460210559 -2567937273
ifOutOctets.2 = 3147358843 1687148284
ifOutOctets.2 = 562007710 -2585351133
ifOutOctets.2 = 3343395107 2781387397
ifOutOctets.2 = 934626935 -2408768172
ifOutOctets.2 = 2757740986 1823114051
It seems that the OutOctets count is pretty weird - I get negative values. Has anyone seen this before?
Strangely, I have a PRTG installation which reports the data accurately and smoothly. I am unsure what LibreNMS is doing differently here. Both use eth0 and both use SNMP.
- Does anyone have any suggestions on how I can investigate why snmp is producing this data?
- Does the missing port speed, as it’s a VM interface make any difference to RRDTune?
Thanks