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  1. ZABBIX BUGS AND ISSUES
  2. ZBX-25820

Wrong calculations for items Bits sent/received

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    • S25-W14/15, S25-W16/17
    • 1

      There is a default template called Interfaces by SNMP, inside interfaces discovery there are items "Bits sent" and "Bits received".

      Those items are collecting octects count/info with preprocessing steps:

      1. Change per second
      2. custom multiplier: 8

      Since the item update interval is 3mins we will have the difference of octects between 3mins and multiplied by 8 will have value of: Total number of bits transmitted in 3mins. But we have applied directly "bps" in units which is saying: total number of bits transmitted in 1sec.

       

      For example:

      1st polling value: 12345678

      2nd polling value after 3mins: 134567892 (since 3mins is the item update interval)

      Now the preprocessing steps executes:

      1. Change per second = 134567892 - 123456789 = 11111103
      2. custom multiplier = 11111103 * 8 = 88888824

      the value is 88888824 bits transmitted in 3mins of time

      but as we have applied units as bps for that item it says 88888824 bits transmitted in 1 sec which is wrong right? its showing 88.8Mbps for Bits sent item where my link is only 25Mbps link.

       

      Please correct me if I'm wrong with any misunderstanding.

       

       

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            andris Andris Mednis
            Vinodh4181 Dileep B
            Team C
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