Contents - Cisco 10000 Series Configuration Manual

Redirecting Subscriber Traffic Using Intelligent
Service Gateway Layer 4 Redirect
Intelligent Service Gateway (ISG) is a Cisco IOS software feature set that provides a structured
framework in which edge devices can deliver flexible and scalable services to subscribers. This chapter
describes how to configure ISG to redirect subscriber traffic using the ISG Layer 4 Redirect feature. This
feature enables service providers to better control the user experience by allowing subscriber TCP or
User Datagram Protocol (UDP) packets to be redirected to specified servers for appropriate
management. ISG Layer 4 redirection can be used to facilitate subscriber authentication, initial and
periodic advertising captivation, redirection of application traffic, and Domain Name System (DNS)
redirection.
History for the Redirecting Subscriber Traffic Using ISG Layer 4 Redirect Feature
Release
Release 12.2(31)ZV
Release 12.2(31)ZV1 and
12.2(31)ZV2
Finding Feature Information in This Module
Your Cisco IOS software release may not support all features. To find information about feature support
and configuration and platform requirements, use the
Traffic" section on page

Contents

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OL-14660-03
Modification
This feature was introduced and implemented on the Cisco 10000 series
router.
This feature was integrated with the SSS tracebacks in ISG service
information.
4-12.
Prerequisites for Redirecting ISG Subscriber Traffic, page 4-2
Restrictions for Redirecting ISG Subscriber Traffic, page 4-2
Redirecting ISG Subscriber Traffic, page 4-2
Configuring ISG Layer 4 Redirection, page 4-3
Configuration Examples for ISG Layer 4 Redirect, page 4-9
Additional References, page 4-12
Feature Information for Redirecting ISG Subscriber Traffic, page 4-12
Cisco 10000 Series Router Access Network Control Protocol Configuration Guide
4
C H A P T E R
"Feature Information for Redirecting ISG Subscriber
4-1