Cisco Cisco IOS Software Release 12.2(27)SBC 技术参考

This document uses a model network tested in a Cisco lab to describe how to deploy a service provider 
broadband-based network using Cisco 7200 and 7300 series routers as a Cisco Intelligent Service 
Gateway (ISG) and Gigabit Ethernet (GE) as the aggregation technology. The Cisco ISG software 
provides a feature set that assists the service provider with provisioning and maintaining broadband 
networks that have many types of edge devices and many subscribers and services. The Cisco ISG 
software combines real-time session and flow control with programmable, dynamic policy control to 
deliver flexible and scalable subscriber session management capabilities. The role of the Cisco ISG 
software is to execute policies that identify and authenticate subscribers, and to provide access to the 
services that the subscriber is entitled to access. The role of the Cisco ISG router is deployment at 
network access control points so subscribers can access services through the software.

Cisco IOS software is packaged in feature sets that are supported on specific platforms. The Cisco ISG 
software is supported on Cisco 7200 and 7300 series routers. To get updated information regarding 
platform support and ISG feature sets, access Cisco Feature Navigator at 

. 

To access Cisco Feature Navigator, you must have an account on Cisco.com. Qualified users can 
establish an account on Cisco.com by following the directions at 

. If you 

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