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Spirent TestCenter: Can I configure two primary licenses server in STC GUI and what will happen?

  • Let say the user configures both the primary and backup license servers as two individual primary license servers in the GUI, on this way:
  • If the first primary (in the GUI) is down and the second primary (in the GUI, which is the backup) is online, I would assume that the STC application will be successful in checking out the licenses from the backup server (as it is listed in the GUI as the second primary license server).
    • In short, the STC application just goes through multiple primary + backup pairs till it finds a license server that can provide the required licenses. Is my understanding correct?
  • There are two different behaviors depending on whether fragmentedLicensing=true is set. (Spirent_TestCenter_BLL_Virtual_Licensing.pdf)
    1. fragmentedLicensing=false (this is the default setting)
      • This default setting has the behavior mentioned in the previous section.
      • Support just tested that same scenario, and having 2 primary servers running, and put them in STC GUI, both as primary, the STC application (the chassis) will check out the licenses from any of the servers that are up (starting with the 1st listed as primary, and if the 1st primary is down, the 2nd primary will provide the licenses)
      • Actually, the same happens if you configure two real primary servers as Primary and Backup on the GUI on this way:
      • (Even if there is no HOTSTANDBY configuration between them)
    2. fragmentedLicensing=true
      • The behavior with this setting and 2 primary servers.
        • If the 1st primary licenses are used up, the 2nd primary will fulfill the required licenses.
      • Note, there is a limitation where all ports in the same STCv VM need to be checked out from the same license server.
  • HOTSTANDBY versus 2nd Primary
    • Hot Standby cannot be used as a standalone. It's primary would need to be down.
      • Note: The Hot Standby requires a special license.
    • 2nd Primary has it's own set of licenses and can be used as a standalone.

Product : VW Controller Virtual,STC Virtual,Spirent TestCenter,Virtualization,License Issues