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DMB_19518's avatar
DMB_19518
Icon for Altocumulus rankAltocumulus
Feb 02, 2017

UDP Virtual server (port 162) not working

Dear community,   I have set up a UDP standard Virtual Server with two members, listening to port UDP 162. The purpose of this VS is to balance SNMP traps to the active pool member. The pool has b...
application delivery
LTM
  • DMB_19518's avatar
    DMB_19518
    Mar 08, 2017

    To finish this topic, there was nothing wrong with the VS definition nor in the software release. The problem was in a wrong pool member health monitor configuration, that was causing the VS to become not available.

     

    Thanks to all replies.

     

    PS - lesson learned: an udp health monitor was not enough to monitor the pool for this specific case, as this monitor is always "green" even if port 162 is not listening in the pool member. This was corrected by adding a second monitor and hence, truly determining the status of the pool member.

     

DMB_19518's avatar
DMB_19518
Icon for Altocumulus rankAltocumulus
Feb 02, 2017

Hi Kees, thanks for replying. Yes, here it goes:

ltm virtual OAM_INT_CN_MON_ALARM_INT_VS_162 {
    destination 192.168.30.242:snmptrap
    ip-protocol udp
    mask 255.255.255.255
    pool OAM_INT_CN_MON_ALARM_INT_Pool
    profiles {
        udp { }
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    vlans {
        VLAN_333_OAM_INT
    }
    vlans-enabled
    vs-index 203
}

Also some info on the SW version:

Main Package
  Product  BIG-IP
  Version  11.4.1
  Build    711.0
  Edition  Hotfix HF11
  Date     Tue Aug 30 12:18:51 PDT 2016