Standalone Mode Overview; Local Pool Selection And Address Allocation; Figure 11: Non-Ppp Equal Access Via The Router - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - BROADBAND ACCESS CONFIGURATION GUIDE 2010-10-12 Configuration Manual

JunosE 11.3.x Broadband Access Configuration Guide

Figure 11: Non-PPP Equal Access via the Router

SRC

Standalone Mode Overview

Local Pool Selection and Address Allocation

468
NOTE: If a DHCP client attempts to renew its address and the DHCP server
receives the request on a different interface than the interface that the
client originally used, the DHCP server sends a NAK message to the client,
forcing the client to begin the DHCP connection process again.
SRC client
Subscriber requests IP address
DHCP server asks SRC software for subscriber information
SRC software gets subscriber information from RADIUS
SRC software gives subscriber information to DHCP
DHCP picks IP address from address pool
DHCP gives IP address to subscriber
Subscriber logs on to SRC application
In standalone mode, the DHCP local server operates as a basic DHCP server. Clients are
not authenticated by default; however, you can optionally configure the DHCP local
server to use AAA authentication for the incoming clients. The DHCP local server receives
DHCP client requests for addresses, selects DHCP local pools from which to allocate
addresses, distributes addresses to the clients, and maintains the resulting DHCP bindings
in a server management table.
In standalone mode, the DHCP local server selects a pool to allocate an address for a
client; the SRC software is never notified or queried. The process used depends on whether
AAA authentication is configured.
If AAA authentication is not configured, the DHCP local server selects a pool by matching
the local pool network address to the giaddr or the received interface IP address. The
router compares the parameters with the local DHCP pools in the order presented in
Table 99 on page 469. When the router finds a match, it selects a pool based on the
match and does not examine other parameters.
E Series router
Copyright © 2010, Juniper Networks, Inc.