Dynamic Host Configuration

Protocol

(DHCP)

Group Members

Bilal TahirMuhammad Saqib

Introduction

Configuration

Scope

Reference

Overview

IntroductionThe Dynamic Host Configuration Protocol (DHCP) is a standardized network used on Internet.

Clients should require no manual configuration by the user to connect to the network.

This is normally accomplished through the use of a Dynamic Host Configuration Protocol

Introduction (Cont)

Requires little or no administrative overhead, after initial configurations of the DHCP server.

Addresses can be leased for a predefined amount of time before the lease expires and must be renewed by the client.

DHCP Operations

DHCPDISCOVERDHCPOFFERDHCPREQUESTDHCPACK

DHCP Configuration

Steps to Configure Easy IPConfigure a named DHCP poolConfigure network/subnet mask poolConfigure the default gatewayConfigure addresses to exclude from the DHCP address pool

DHCP Configuration

DHCP Pool

Router(config)#ip dhcp pool name

Pool Of Addresses

Router(dhcp-config)#network net_address subnet_mask

DHCP Configuration

The Default Gateway

Excluded Addresses

Router(dhcp-config)#default-router ip_address

Router(config)#ip dhcp excluded-address address_1 [address_n]

Example DHCP Configuration

RTA(config)#ip dhcp excluded-address 10.1.1.1

RTA(config)#ip dhcp pool RTA_LAN

RTA(dhcp-config)#network 10.1.1.0 255.255.255.0

RTA(dhcp-config)#default-router 10.1.1.1

DHCP Scope

Super-scope

Multi-scope

A range of IP addresses that span several Subnets.

The DHCP server can assign these addresses to clients that are on several subnets.

A superscope is an administrative feature of DHCP servers that you can create and manage through the DHCP console.

Super-scope

Multicast scope

A range of class D addresses from 224.0.0.0 to 239.255.255.255 . only one copy of the message.

(MADCAP) is used to request a multicast address from a DHCP server.

DHCP Scope Properties

Network IDSubnet maskNetwork IP address rangeLease durationRouterScope nameExclusion range

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References

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