2010

In the redundant license server model, all servers must reside on the same
subnet and have consistent network communications. (Slow, erratic, or dial-up
connections are not supported.)
Advantage of the Redundant License Server Model
■ If one of the three servers fails, all licenses that are managed in the server
pool are still available.
Disadvantages of the Redundant License Server Model
■ If more than one server fails, no licenses are available.
■ All three servers must reside on the same subnet and have reliable network
communications. The redundant server pool does not provide network
fault tolerance.
■ If one of the three servers is replaced, the complete redundant server pool
must be rebuilt.
■ If your Autodesk product supports license borrowing and licenses are
borrowed from a redundant license server pool, you must restart the license
server after you stop the Network License Manager.
Learn About Your License
In this section, you learn about license operation and availability, the license
file, license types and behaviors, and the heartbeat signal.
License Operation and Availability
When you start an Autodesk product, the product determines the server from
which it should try to obtain a license. The product then requests a license
through the TCP/IP network protocol to the license server.
If the number of available licenses has not been exceeded on the license server,
the Network License Manager assigns a license to the workstation. A product
session then starts on the workstation, and the number of available licenses
on the license server is reduced by one.
Likewise, when you exit a product, the Network License Manager frees a license
for another user. If you run multiple sessions of an Autodesk product on an
individual workstation, only one license is used. When the last session is
closed, the license is freed.
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