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SNMP dynamic indexes and cache don't work

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  • jean
    Member
    • Apr 2006
    • 85

    #1

    SNMP dynamic indexes and cache don't work

    Hello,

    I just finished the migration of our Zabbix server in version 2.2.1 from 2.0.8. Since this migration, my SNMP trafic from our Zabbix server is higher. I use a lot of SNMP items with dynamic indexes. Generally this is useful for the status of interfaces. Example :
    Admin status port port1 the snmp_oid is .1.3.6.1.2.1.2.2.1.7[index,.1.3.6.1.2.1.2.2.1.2,port1]

    I read this in documentation
    "When a dynamic index item is requested, Zabbix retrieves and caches whole SNMP table under base OID for index, even if a match would be found sooner. This is done in case another item would refer to the same base OID later - Zabbix would look up index in the cache, instead of querying the monitored host again. Note that each poller process uses separate cache."
    , but when I sniff the trafic, I see that the browsing of the SNMP indexe tree are made on all check. It's like the cache doesn't work or the poller changed at any check.
    I have set up 100 pollers in the configuration.

    Maybe I make something wrong.

    Other people have the same behaviour ?

    Regards

    Jean
    Last edited by jean; 27-01-2014, 16:33.
  • jean
    Member
    • Apr 2006
    • 85

    #2
    No people use SNMP dynamic indexes ?

    Comment

    • wrocha
      Junior Member
      • Aug 2013
      • 27

      #3
      Same problem here

      I am experiencing the same problem!! i tought was a bug in version 2.2.1. Today i did the upgrade to version 2.2.2 and the problem persist!!

      Comment

      • jean
        Member
        • Apr 2006
        • 85

        #4
        I confirm, this bug is still present in version 2.2.2. Reference bug ZBX-7690...

        Comment

        • the_doc
          Junior Member
          • Jan 2014
          • 3

          #5
          Just for some overview. Reference bug ZBX-7690
          Forum post about same problem: Dynamic SNMP indexes timeout

          Comment

          • jean
            Member
            • Apr 2006
            • 85

            #6
            wrocha, have you make an another tcpdump/snoop on your Zabbix server to see if the problem is still present after a few hours of Zabbix server in working state ? I think more pollers do you have, longer the filling of the cache

            Comment

            • wrocha
              Junior Member
              • Aug 2013
              • 27

              #7
              no i didn't try that.

              Comment

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