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CHAPTER

22-1

Cisco CNS Network Registrar User’s Guide

OL-6240-02

Advanced DHCP Server Properties

This chapter describes how to set up some of the more advanced DHCP server properties. Before clients

can use DHCP for address assignment, you must add at least one scope to the server. This is described

in Chapter 19, “Configuring Scopes and Networks.” The additional properties are:

• Configuring BOOTP, page 22-1

• Defining Advanced Server Parameters, page 22-3

• Integrating Windows System Management Servers, page 22-7

• Using Extensions to Affect DHCP Server Behavior, page 22-8

• Tuning the DHCP Server, page 22-10

• Configuring Virtual Private Networks and Subnet Allocation, page 22-12

• Setting DHCP Forwarding, page 22-19

Configuring BOOTP

BOOTP (the BOOTstrap Protocol) was originally created for loading diskless computers. It was later

used to allow a host to obtain all the required TCP/IP information to use the Internet. Using BOOTP, a

host can broadcast a request on the network and get information required from a BOOTP server. The

BOOTP server is a computer that listens for incoming BOOTP requests and generates responses from a

configuration database for the BOOTP clients on that network. BOOTP differs from DHCP in that it has

no concept of lease or lease expiration. All IP addresses that a BOOTP server allocates are permanent.

You can configure Cisco CNS Network Registrar to act like a BOOTP server. In addition, although

BOOTP normally requires static address assignments, you can choose to either reserve IP addresses

(and, therefore, use static assignments) or have IP addresses dynamically allocated for BOOTP clients.

About BOOTP

When you configure the DHCP server to return a BOOTP packet, be aware that BOOTP requires

information in the DHCP packet in fields other than the option space. BOOTP devices often need

information in the boot file (file), server’s IP address (siaddr), and server’s host name (sname) fields of

the DHCP packet (see RFC 2131).

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Shrnutí obsahu

Strany 1 - Configuring BOOTP

CHAPTER22-1Cisco CNS Network Registrar User’s GuideOL-6240-0222Advanced DHCP Server PropertiesThis chapter describes how to set up some of the more ad

Strany 2 - Enabling BOOTP for Scopes

22-10Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesTuning the DHCP Server• Windows:–For Tcl—\progra

Strany 3 - BOOTP Relay

22-11Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesTuning the DHCP Serverclient-detail (8) After ev

Strany 4

22-12Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesConfiguring Virtual Private Networks and Subnet

Strany 5

22-13Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesConfiguring Virtual Private Networks and Subnet

Strany 6 - Deferring Lease Extensions

22-14Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesConfiguring Virtual Private Networks and Subnet

Strany 7

22-15Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesConfiguring Virtual Private Networks and Subnet

Strany 8

22-16Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesConfiguring Virtual Private Networks and Subnet

Strany 9

22-17Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesConfiguring Virtual Private Networks and Subnet

Strany 10 - Tuning the DHCP Server

22-18Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesConfiguring Virtual Private Networks and Subnet

Strany 11 - OL-6240-02

22-19Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesSetting DHCP ForwardingVPN and Subnet Allocation

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22-2Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesConfiguring BOOTPEvery Network Registrar DHCP pol

Strany 13

22-20Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesSetting DHCP ForwardingAs the DHCP server proces

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22-3Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesDefining Advanced Server ParametersMoving or Deco

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22-4Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesDefining Advanced Server ParametersTable 22-1 DHC

Strany 16 - VPN Usage

22-5Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesDefining Advanced Server ParametersStep 1 In the

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22-6Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesDefining Advanced Server ParametersIn the CLI, us

Strany 18

22-7Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesIntegrating Windows System Management ServersAs a

Strany 19

22-8Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesUsing Extensions to Affect DHCP Server BehaviorWh

Strany 20

22-9Cisco CNS Network Registrar User’s GuideOL-6240-02Chapter 22 Advanced DHCP Server PropertiesUsing Extensions to Affect DHCP Server BehaviorYo

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