Cisco 700 series Configuration Guide

CHAPTER
Configuring DHCP Relay, DHCP Server, and PAT 5-1
5
Configuring DHCP Relay,
DHCP Server, and PAT
Cisco 700 series routers can perform the role of the relay agent, relaying IP configuration
information request packets from the LAN interface, over the ISDN interface, to a specified
Dynamic Host Configuration Protocol (DHCP) server. Cisco 700 series routers provide
DHCP relay, DHCP server, Port Address Translation (PAT), and Internet Protocol Control
Protocol (IPCP).
This chapter provides descriptions, application notes, and example configurations for
configuring Dynamic Host Configuration Protocol (DHCP) relay, DHCP server, and Port
Address Translation (PAT) on the Cisco 700 series router. It contains the following
sections:
• DHCP Description
• PAT Description
• IPCP Description
• PPP IPCP Negotiation Example
• DHCP Relay with IPCP Negotiation Example
• DHCP Server with IPCP Negotiation Example
• PAT with IPCP Single-Destination Negotiation Example
• DHCP Server and PAT with IPCP Single-Destination Negotiation Example
• DHCP Server with PAT and IPCP Dual-Destination PPP Negotiation Example

Cisco 700 series Specifications

General

Wireless	No
Compression	No
WAN Ports	1
Weight	0.48 kg
Power Supply	External
Category	Network Router