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Spirent TestCenter Virtual: Not able to apply using 5.18 STCv, getting validation errors

Symptoms

When using 5.18 STCv with License Server 3.1.790593 version, the GUI is preventing you to apply as soon as you create some streamblock (even b2b - unidirectional / bidirectional traffic), throwing the following errors:
 
L2L3 Traffic: Bandwidth load 87 exceeds limits 0port//1/2
License check: L2L3 bandwidth load exceeds the limit
L2L3 Traffic: Bandwidth load 87 exceeds limits 0Port//1/1
License check: L2L3 bandwidth load exceeds the limit
License check: Chassis missing valid"0001_PACKET_GEN_ANALYZER_BPK_A" license.

However you can see the license is there:
 

 
Environment
 
  • STCv 5.18
  • License Server 3.1.790593
  • LS 3.1.790593
  • License Server 4.0.0
  • Licensing errors
  • Chassis missing valid"0001_PACKET_GEN_ANALYZER_BPK_A" license
  • PACKET GENERATOR AND ANALYZER BASE PACKAGE A
Explanation/Resolution

The issue went away after re-generating the licenses for License Server 3.1
 
  • CR-01484117
  • JIRA: CIPCD-16773
  • Subject: 5.18 STCv works with minimum License Server 4.0.0 version ONLY.
  • Date/Time Opened: 2/19/2021 8:41 AM
  • Date/Time Closed: 2/22/2021
  • Target Release: NA
  • Status: Declined
Root Cause
 
  • License Issue
    • For some reason the licenses on License Server 3.1 got corrupted.
    • Also seen on N11U after upgrade to from v5.13 to v5.18.
      • Rebooting the N11U cleared the issue.

Product : STC Virtual,Spirent TestCenter,License Issues