Remote Access Overview; B-Ras Data Flow; Configuring Ip Addresses For Remote Clients - Juniper JUNOSE SOFTWARE 11.0.X - BROADBAND ACCESS CONFIGURATION GUIDE 4-1-2010 Configuration Manual

JUNOSe 11.0.x Broadband Access Configuration Guide

Remote Access Overview

Broadband Remote Access Server (B-RAS) is an application running on your router
that:
A DSLAM collects data traffic from multiple subscribers into a centralized point so
that it can be uploaded to the router over an ATM connection via a DS3, OC3, E3,
or OC12 link.
The router provides the logical termination for PPP sessions, as well as the interface
to authentication and accounting systems.

B-RAS Data Flow

The router performs several tasks for a digital subscriber line (DSL) PPP user to
establish a PPP connection. This is an example of the way B-RAS data might flow:
1.
2.
3.
4.
NOTE: For information about configuring RADIUS attributes see "Configuring RADIUS
Attributes" on page 165.

Configuring IP Addresses for Remote Clients

A remote client can obtain an IP address from one of the following:
4
Remote Access Overview
Configuring the SRC Client on page 94
DHCPv6 Local Address Pools for Allocation of IPv6 Prefixes Overview on page 101
Configuring the DHCPv6 Local Address Pools on page 104
Using DHCPv6 Local Address Pools for Prefix Delegation over non-PPP Links
Example on page 107
Aggregates the output from digital subscriber line access multiplexers (DSLAMs)
Provides user Point-to-Point Protocol (PPP) sessions or IP-over-Asynchronous
Transfer Mode (ATM) sessions
Enforces quality of service (QoS) policies
Routes traffic into an Internet service provider's (ISP's) backbone network
Authenticate the subscriber using RADIUS authentication.
Assign an IP address to the PPP/IP session via RADIUS, local address pools, or
Dynamic Host Configuration Protocol (DHCP).
Terminate the PPP encapsulation or tunnel a PPP session.
Provide user accounting via RADIUS.
RADIUS server
Local address server