Autodesk AutoCAD Design Suite 2013, Installation Manual, Page: 129 / 138

At this point, no more computers can run the Autodesk product until a license
is returned to the NLM.
What is the benefit of using a network licensed version
of the software?
Network licensing provides ease of license management for large
drafting/design facilities, classrooms, and other environments that need to
support many users. The Network License Manager provides centralized control
of licenses, including their registration, activation, and distribution to users.
One main advantage of a network license is that you can install products on
more computers than the number of licenses you have purchased. For example,
you can purchase 25 licenses but install them on 40 computers for ease of
access. At any one time, products can run on the maximum number of
computers for which you have licenses. This means you get a true floating
license. A network licensing system can also be configured to allow users to
borrow a license for a limited time to use on a computer disconnected from
the network.
How does the licensing process use the Internet?
An Internet browser is used to facilitate license activation. After installing your
product, you can operate in trial mode for a specified period, typically 30 days.
When you choose to activate the software and enter your registration data,
your computer communicates with Autodesk over the Internet. An activation
code is returned and you are not prompted again during startup. The Internet
is also used to communicate with Autodesk for other purposes such as
authorizing access to the Subscription Center, downloading service packs, and
sending product support messages.
Glossary
ADSKFLEX_LICENSE_FILE In a distributed license server configuration, the
environment variable used to point a computer to the distributed license
servers.
Glossary | 123