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Overview of ISG
First Published: March 20, 2006
Last Updated: March 2, 2009
Intelligent Services Gateway (ISG) is a Cisco IOS and Cisco IOS XE software feature set that provides
a structured framework in which edge devices can deliver flexible and scalable services to subscribers.
This document provides information about what ISG is, the benefits of ISG, and how to begin
implementing it.
Finding Feature Information
For the latest feature information and caveats, see the release notes for your platform and software
release. To find information about the features documented in this module, and to see a list of the releases in
which each feature is supported, see the “Feature Information for the Overview of ISG” section on page 9.
Use Cisco Feature Navigator to find information about platform support and Cisco IOS XE software
image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on
Cisco.com is not required.
Contents
• Information About ISG, page 1
• Additional References, page 8
• Feature Information for the Overview of ISG, page 9
Information About ISG
This section contains the following concepts:
• What Is ISG?, page 2
• ISG Principles, page 3
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