Invalid SNMP Usage Calculation

[lucaderi]

05/May/2025 11:45:16 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:225] ERROR SNMP Usage, in-bits percentage higher than [value: 1029%][192.168.67.247]
05/May/2025 11:45:16 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:217] ERROR SNMP Usage, out-bits percentage higher than 100 [value: 1029%][192.168.67.247]
05/May/2025 11:40:16 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:225] ERROR SNMP Usage, in-bits percentage higher than [value: 1029%][192.168.67.247]
05/May/2025 11:40:16 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:217] ERROR SNMP Usage, out-bits percentage higher than 100 [value: 1029%][192.168.67.247]
05/May/2025 11:35:16 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:225] ERROR SNMP Usage, in-bits percentage higher than [value: 850%][192.168.67.247]
05/May/2025 11:35:16 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:217] ERROR SNMP Usage, out-bits percentage higher than 100 [value: 850%][192.168.67.247]

[MatteoBiscosi]

The issue should now be fixed

[b1b3tt3r]

v.6.5.250515 (Rocky Linux release 9.5

16/May/2025 14:15:13 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:255] [Host: 172.25.0.87][Port: 239][Time Delta: 300][In Bits: 7948303000][In Percentage: 0][In Bits Delta: 0][Out Bits: 13229964232][Out Percentage: 0][Out Bits Delta: 1050888344]
16/May/2025 14:15:13 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:205] ERROR SNMP Usage, in-bits negative delta [value: 7948303000][delta: -26232962544][172.25.0.87]
16/May/2025 14:15:13 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:255] [Host: 172.25.0.152][Port: 198][Time Delta: 300][In Bits: 2653605816][In Percentage: 0][In Bits Delta: 0][Out Bits: 17450466912][Out Percentage: 4][Out Bits Delta: 11586916752]
16/May/2025 14:15:13 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:205] ERROR SNMP Usage, in-bits negative delta [value: 2653605816][delta: -29335755672][172.25.0.152]

[celeroncool]

Welcome to ntopng x86_64 v.6.4.250610 (6.4-stable:726561689db25a6adfe05d9a23206850b85fb0c1:20250610)
Built on Rocky Linux release 9.5

I have same kind of errors with HPE Aruba switches:
Jun 11 09:21:55 ntop ntopng[7822]: 11/Jun/2025 09:21:55 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:198] ERROR: SNMP Usage, in-bits negative delta [value: 162935536775344][delta: -13525040472]
Jun 11 09:21:55 ntop ntopng[7822]: 11/Jun/2025 09:21:55 [snmp_poll.lua:428] [snmp_dev_if_counters.lua:198] ERROR: SNMP Usage, in-bits negative delta [value: 162935536775344][delta: -13525040472]

[MatteoBiscosi]

As of today, after many fixes, the issue seems fixed. Please reopen if needed