Forum Discussion

VictorRuiz's avatar
VictorRuiz
Icon for Altocumulus rankAltocumulus
Feb 12, 2024
Solved

Drop reason counters.rx_portd_rdisc

Hello everyone, i'm asking for your help in order to undestand some values i'm seeing when looking for the drop reason in my big ip devices   I have 2 big ip i5600 devices in an Active/Standby conf...
drop
  • Jeffrey_Granier's avatar
    Jeffrey_Granier
    Feb 20, 2024

    Hello Victor,

     

    RPORTD is incremented when a port’s spanning tree state is not in the forwarding state, while RDISC is incremented for packets discarded due to ingress  buffer availability.  This doesnt necessarily mean TMM traffic.  

     

    BPDU packets coming from a switch which will register this counter and increment the counters.rx_portd_rdisc.. this can likely be determined by run tcpdump on the interface.  Please take all ***precautions*** when running tcpdump 

     

Jeffrey_Granier's avatar
Jeffrey_Granier
Icon for Employee rankEmployee
Feb 12, 2024

did you run through all of the tmctl commands in the KB article you posted?  Looks like you should get more details if you run this:  tmctl drop_reason   

  • VictorRuiz's avatar
    VictorRuiz
    Icon for Altocumulus rankAltocumulus
    Feb 19, 2024

    Thanks for your answer Jeffrey.

     

    The image attached is the output of tmctl drop_reason.

    • Jeffrey_Granier's avatar
      Jeffrey_Granier
      Icon for Employee rankEmployee
      Feb 20, 2024

      Hello Victor,

       

      RPORTD is incremented when a port’s spanning tree state is not in the forwarding state, while RDISC is incremented for packets discarded due to ingress  buffer availability.  This doesnt necessarily mean TMM traffic.  

       

      BPDU packets coming from a switch which will register this counter and increment the counters.rx_portd_rdisc.. this can likely be determined by run tcpdump on the interface.  Please take all ***precautions*** when running tcpdump