Jump to content
Welcome to our new Citrix community!
  • License Expiration Behavior


    Brian Huhn 2
    • Validation Status: Validated
      Summary: What happens when your NetScaler license expires? The intent of this article is to provide clarity on license expiry behavior for various NetScaler licensing models. The following licensing models will be addressed:

      - NetScaler pooled capacity licensing
      - NetScaler fixed throughput term licensing (NEW)
      - NetScaler perpetual licensing
      Has Video?: No

    The intent of this article is to provide clarity on license expiry behavior for various NetScaler licensing models. The following licensing models will be addressed:
     
    -       NetScaler pooled capacity licensing
    -       NetScaler fixed throughput term licensing (NEW)
    -       NetScaler perpetual licensing

    Before discussing these scenarios, know that NetScaler always encourages customers to renew their license before it expires. The best way for customers to avoid all of these license expiration scenarios is to renew and apply the license before it expires.

    NetScaler pooled capacity licensing

     

    Firstly, the recent changes to NetScaler’s licensing programs have not had any effect on pooled capacity license expiry behavior, and it will remain the same as it has been since the program was launched.

     

    When a pooled capacity license is nearing expiration, the customer, sales rep, and partner (if applicable) will all receive advance notification of when this license will expire. This should provide ample time to purchase and upload a new license.

     

    The expiry date shown in the NetScaler ADM user interface is the final expiry date. However, NetScalers that are licensed with a pooled capacity license will automatically receive a 30 day period of continued functionality past its initial purchase term. These extra 30 days are automatically accounted for in the expiration date, and functionality will not continue past that date. Throughout the 30 days of extra time (leading up to the expiry date), the NetScaler will retain identical functionality. This is true even if the NetScaler is rebooted. If a new license is not applied before the expiry date, the NetScaler will stop processing traffic until a new license is applied. 

     

    Some have referred to this 30 day period as a “grace period”, but this is not the case. The 30 day period following a license’s expiration date is not the same as “the grace period”. A grace period only occurs when a NetScaler licensed with pooled capacity loses connectivity to NetScaler ADM while the license is still active. The grace period is also a 30 day window where the NetScaler will continue to function as normal. If the NetScaler is in this grace period (due to loss of connectivity to the management plane) and the NetScaler is rebooted, there will not be any impact to the NetScaler’s functionality and it will continue to operate in this grace period. 

     

    The difference between the expiry window and the grace period is this – during a disconnect grace period, if connectivity is not restored to NetScaler ADM within 30 days, the NetScaler will stop processing traffic, even if the NetScaler license has not expired. Once connectivity is restored, the NetScaler will recognize the active license and return to full functionality.

     

    Corner case scenarios to consider regarding license functionality:

    -   If connectivity is lost to NetScaler ADM, the NetScaler will enter a 30 day grace period. But be warned, if NetScaler connects to the management plane again and the license is missing (very unlikely but possible if someone is messing around with their management license) then the grace will terminate and the NetScaler will enter express mode.

    -   If the license has not expired, but the grace period was started due to lack of management plane connectivity, the grace period will not terminate upon a reboot.

     

    For more information regarding pooled capacity licensing troubleshooting, follow this link or reach out to your NetScaler sales rep or partner.

     

    NetScaler fixed throughput term licensing

    This is a new licensing model for NetScaler and it does not feature the use of NetScaler ADM. Because of this, the licensing expiry behavior is not the same as pooled capacity.

     

    However, they do share the following similarity. When a license is nearing expiration, the customer, sales rep, and partner (if applicable) will all receive advance notification of when this license will expire. This should provide ample time to purchase and upload a new license.

     

    If a NetScaler fixed throughput term license expires, the NetScaler will continue to function indefinitely until it is rebooted. Upon reboot, the NetScaler will stop processing traffic. At this stage, the only way to restore functionality is to apply a new license.

     

     

    NetScaler perpetual licensing

    The recent changes to NetScaler’s licensing programs have had no effect on Perpetual renewals and the corresponding hardware maintenance.

     

    The NetScaler perpetual license does not expire. However, hardware maintenance is required for perpetual licensing, and does expire on a termed basis. If hardware maintenance is not renewed, the customer will no longer be able to receive support.


     

    User Feedback

    Recommended Comments

    There are no comments to display.



    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now

×
×
  • Create New...