[network::dlink::standard::snmp::plugin] mode "interfaces" and incorrect perfdata values ​​for discard packets

[Aleksey-Maksimov]

Hello.

From time to time we see percentages greater than 100 on different D-Link switches. For example, here we see 300-400%.
It looks like there is some kind of logic error with the plugin.

# ./centreon_plugins.pl' '--plugin=network::dlink::standard::snmp::plugin' '--mode=interfaces' 
' --snmp-community' 'my'  '--snmp-version' '2c' 
'--warning-out-traffic' '98' '--warning-out-error' '1' '--warning-out-discard' '50' '--warning-in-traffic' '98' 
'--warning-in-error' '1' '--warning-in-discard' '50' '--use-new-perfdata' '--units-traffic' '%'
'--snmp-force-getnext' '--add-errors' '--snmp-autoreduce' 
'--oid-filter' 'ifName' '--oid-display' 'ifName' '--hostname' '10.2.18.9' '--filter-uom' 'null' 
'--filter-perfdata-adv' 'not (%(value) == 0)' '--filter-perfdata' '.*[.](traffic|error|discard)[.].*' 
'--change-perfdata' '.*,,eval(%(label) =~ s/#interface//g)' '--add-traffic'


WARNING: Interface 'Slot0/2' Packets Out Discard : 317.11% (241 on 76) | 

'Slot0/1.traffic.in.bitspersecond'=4137534.86;0:98000000;;0;100000000 
'Slot0/1.traffic.out.bitspersecond'=1276362.61;0:98000000;;0;100000000 
'Slot0/10.traffic.in.bitspersecond'=12705.31;0:98000000;;0;100000000 
'Slot0/10.traffic.out.bitspersecond'=26758.20;0:98000000;;0;100000000 
'Slot0/10.packets.out.discard.percentage'=27.60;0:50;;0;100 
'Slot0/11.traffic.in.bitspersecond'=1776.65;0:98000000;;0;100000000 
'Slot0/11.traffic.out.bitspersecond'=17209.63;0:98000000;;0;100000000 
'Slot0/11.packets.out.discard.percentage'=35.35;0:50;;0;100 
'Slot0/13.traffic.in.bitspersecond'=1171442.29;0:98000000;;0;100000000 
'Slot0/13.traffic.out.bitspersecond'=3344648.16;0:98000000;;0;100000000 
'Slot0/13.packets.out.discard.percentage'=1.14;0:50;;0;100 
'Slot0/14.traffic.in.bitspersecond'=11923.76;0:98000000;;0;100000000 
'Slot0/14.traffic.out.bitspersecond'=23026.12;0:98000000;;0;100000000 
'Slot0/14.packets.out.discard.percentage'=23.15;0:50;;0;100 
'Slot0/15.traffic.in.bitspersecond'=26634.78;0:98000000;;0;100000000 
'Slot0/15.traffic.out.bitspersecond'=34569.47;0:98000000;;0;100000000 
'Slot0/15.packets.out.discard.percentage'=13.86;0:50;;0;100 
'Slot0/17.traffic.in.bitspersecond'=79.35;0:98000000;;0;100000000 
'Slot0/17.traffic.out.bitspersecond'=15681.96;0:98000000;;0;100000000 
'Slot0/17.packets.out.discard.percentage'=42.64;0:50;;0;100 
'Slot0/2.traffic.in.bitspersecond'=72.65;0:98000000;;0;100000000 
'Slot0/2.traffic.out.bitspersecond'=907.27;0:98000000;;0;100000000 
'Slot0/2.packets.out.discard.percentage'=317.11;0:50;;0;100 
'Slot0/22.traffic.in.bitspersecond'=20247.84;0:98000000;;0;100000000 
'Slot0/22.traffic.out.bitspersecond'=29025.80;0:98000000;;0;100000000 
'Slot0/22.packets.out.discard.percentage'=18.76;0:50;;0;100 
'Slot0/23.traffic.in.bitspersecond'=29183.51;0:98000000;;0;100000000 
'Slot0/23.traffic.out.bitspersecond'=745460.73;0:98000000;;0;100000000 
'Slot0/23.packets.out.discard.percentage'=5.38;0:50;;0;100 
'Slot0/24.traffic.in.bitspersecond'=57.80;0:98000000;;0;100000000 
'Slot0/24.traffic.out.bitspersecond'=15567.84;0:98000000;;0;100000000 
'Slot0/24.packets.out.discard.percentage'=42.86;0:50;;0;100 
'Slot0/9.traffic.in.bitspersecond'=53.55;0:98000000;;0;100000000 
'Slot0/9.traffic.out.bitspersecond'=15435.76;0:98000000;;0;100000000 
'Slot0/9.packets.out.discard.percentage'=44.12;0:50;;0;100

[lucie-dubrunfaut]

Hello :)

Can you provide us an anonymized .snmpwalk (full snmpwalk of enterprise branch : snmpwalk -ObentU -v 2c -c public address .1.3.6.1.4.1 > equipment.snmpwalk) of your equipment to help us troubleshooting this issue? Or at least the --debug output.

[Aleksey-Maksimov]

https://disk.yandex.ru/d/xupsIYvIyvn6Bw
Let me know when you download the file, I will delete it.

[lucie-dubrunfaut]

Done you can remoove the download link.
I'll create a ticket to study this issue.