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follow interface using snmp after reboot firewall

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  • systeembeheerder
    Junior Member
    • Mar 2013
    • 3
    #1

    follow interface using snmp after reboot firewall

    Hi,

    I am using zabbix 1.8.15, I have a zabbix agent installed on an Astaro/Sophos UTM 9 firewall and I am reading SNMP data from it.
    I am most interested in the network interface values. For this I am reading out values like: interfaces.ifTable.ifEntry.ifInOctets.27
    this works untill I reboot the firewall and all the interface numbers are mixed up again. So for example, interfaces.ifTable.ifEntry.ifDescr.27 read br0 (bridge
    0) and after a reboot br0 is at interfaces.ifTable.ifEntry.ifDescr.218.
    Is there a way to automagically follow the interfaces? I read somewhere that the ifalias can be used for this, but I am not sure. And I don't know how to fix this.
    Any help appreciated.
    Tags: None
    • eskytthe
      Senior Member
      Zabbix Certified Specialist
      • May 2011
      • 363
      #2
      On many network boxes your can make the Interface Index persistence over reboots e.g. cisco:
      Interface Index (ifIndex) Persistence
      http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080134eec.shtml
      One of the most commonly used identifiers in SNMP-based network management applications is the Interface Index (ifIndex) value. IfIndex is a unique identifying number associated with a physical or logical interface. For most software, the ifIndex is the name of the interface. Although relevant RFCs do not require that the correspondence between particular ifIndex values and their interfaces be maintained across reboots, applications such as device inventory, billing, and fault detection depend on this correspondence.

      I do not know with Astaro/Sophos.
      BR
      Erik

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