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Spirent TestCenter: STC v5.10 - Streamblock Tx and Port Tx both show 0 after starting traffic on 4th port of MX3-QSFP28-4

Symptoms
On the 4th port of MX3-QSFP28-4, After starting traffic, both Streamblock Tx and Port Tx show 0, seems the traffic does not send out at all.

Customer tried rebooting the module also, first time start traffic, they can see the traffic flowing for several seconds, then no more sending any more.
 
It is for PFC cable delay feature on MX3 and FX3.
 
Environment
Spirent TestCenter
  • v 5.10
Explanation/Resolution
Issue resolved in Spirent TestCenter 5.11. Also confirmed working by customer with upgrade to 9.90.9033 (pre-release of 5.11 GA).
 
Root Cause
As per comments from the development team, this defect was due to a bad image that has since been replaced. 
 

Product : Windows GUI