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Spirent TestCenter: 5.04 | FX2-100GO-P4 Tx counter is randomly increasing/togling on streamblocks that are not even started and going to 0 on the ones started.

Symptoms
When we run just a few stream blocks (not all the stream blocks configured/created) we see under Stream Block Results that TX stats on another stream blocks that have not been even started are being displayed and toggling.

NOTE: -> In largest configurations (when LAG is involved), also, some of the TX stats for the Streamblocks that we are manually running toggle between 0 and the correct value, which causes inconsistent results.
 
Environment
  • FX2-100GO-P4
  • STC 5.04

Steps to reproduce:
1.- Bring up the configuration attached (dd-b-5.04_FX2_100GO_P4_txvaluestoggling_reva.tcc)
2.- Relocate the ports into an FX2-100GO-P4 ports
3.- Set the view to Streams > Streamblock Results
4.- Hit APPLY
5.- Go to All Stream blocks section and run JUST Streamblocks called "1" through "5"
6.- Stream block results will show inconsistent stats.
Explanation/Resolution
  • CR raised:
    • CR-01420031 
      Subject: FX2-100GO-P4 | STC 5.04 TX counter is randomly increasing/togliing on streamblocks that are not even started and going to 0 on the ones started
      Opened on: 12/18/2019 
      Target Release: PENDING
Root Cause
  • Bug

Product : Spirent TestCenter