Juniper JUNOSE 11.1.X - BROADBAND ACCESS CONFIGURATION GUIDE 6-4-2010, Configuration Manual

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Chapter 21
Configuring the DHCP External Server
Application
The following sections describe how to configure the DHCP external server application
on the E Series router:
■
DHCP External Server Overview on page 523
■
Preservation of Dynamic Subscriber Interfaces with DHCP External Server
Overview on page 525
■
DHCP External Server Identification of Clients with Duplicate MAC Addresses
Overview on page 526
■
DHCP External Server Configuration Requirements on page 528
■
Enabling and Disabling the DHCP External Server Application on page 528
■
Monitoring DHCP Traffic Between Remote Clients and DHCP Servers on page 529
■
Synchronizing the DHCP External Application and the Router on page 529
■
Configuring Interoperation with Ethernet DSLAMs on page 529
■
Configuring the DHCP External Server to Support the Creation of Dynamic
Subscriber Interfaces on page 530
■
Configuring DHCP External Server to Control Preservation of Dynamic Subscriber
Interfaces on page 532
■
Configuring Dynamic Subscriber Interfaces for Interoperation with DHCP Relay
and DHCP Relay Proxy on page 533
■
Deleting Clients from a Virtual Router’s DHCP Binding Table on page 534
■
Configuring DHCP External Server to Uniquely Identify Clients with Duplicate
MAC Addresses on page 536
■
Configuring DHCP External Server to Re-Authenticate Auto-Detected Dynamic
Subscriber Interfaces on page 537
DHCP External Server Overview
You can configure the E Series router to provide support for an external DHCP server.
This enables the router, which is not running DHCP relay or DHCP proxy server, to
monitor DHCP packets and to keep information for subscribers based on their IP
address and MAC address. When the E Series router’s DHCP external server
application is used, all DHCP traffic to and from the DHCP server is monitored by
the router.
DHCP External Server Overview
■ 523