Broadband Network Gateway Overview; Understanding Bng; Cisco Asr 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide - Cisco ASR 9000 Series Configuration Manual

Broadband Network Gateway Overview

This chapter provides an overview of the Broadband Network Gateway (BNG) functionality implemented
on the Cisco ASR 9000 Series Router.
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Understanding BNG

Broadband Network Gateway (BNG) is the access point for subscribers, through which they connect to the
broadband network. When a connection is established between BNG and Customer Premise Equipment (CPE),
the subscriber can access the broadband services provided by the Network Service Provide (NSP) or Internet
Service Provider (ISP).
BNG establishes and manages subscriber sessions. When a session is active, BNG aggregates traffic from
various subscriber sessions from an access network, and routes it to the network of the service provider.
BNG is deployed by the service provider and is present at the first aggregation point in the network, such as
the edge router. An edge router, like the Cisco ASR 9000 Series Router, needs to be configured to act as the
BNG. Because the subscriber directly connects to the edge router, BNG effectively manages subscriber access,
and subscriber management functions such as:
• Authentication, authorization and accounting of subscriber sessions
• Address assignment
• Security
• Policy management
• Quality of Service (QoS)
OL-28375-03
Understanding BNG, page 15
BNG Architecture, page 16
BNG Role in ISP Network Models, page 18
BNG Packaging, page 19
BNG Configuration Process, page 21
Hardware Requirements for BNG, page 21
BNG Interoperability, page 22
Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide, Release
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