Texas Instruments TINSPIRE Software Installation Manual page 26

 LICENSE_SERVER_2
#Configuration item that points the client application to the specified
secondary license server in case the primary license server is not available
or cannot be contacted.
#Accepted values: IP address or hostname.
LICENSE_SERVER_2=
--------------------------------------------------
License type: Concurrent only
Comment: It is recommended that you enter the IP address here with
License_Server_2 and use the hostname in License_Server_1. If you
have an additional server you can use License_Server_3.
 LICENSE_SERVER_3
#Configuration item that points the client application to the specified
tertiary license server in case the primary or secondary license server is
not available or cannot be contacted.
#Accepted values: IP address or hostname.
LICENSE_SERVER_3=
--------------------------------------------------
License type: Concurrent only
Comment: Leave blank if only using one server. Enter another
hostname or IP Address here if you have an additional server.
22 Installing and Activating TI Software