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The Classless Static Route Option for Dynamic Host Configuration Protocol (DHCP) version 4 (RFC3442)

IP.com Disclosure Number: IPCOM000010534D
Original Publication Date: 2002-Dec-01
Included in the Prior Art Database: 2002-Dec-13
Document File: 10 page(s) / 19K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

T. Lemon: AUTHOR [+3]

Abstract

This document defines a new Dynamic Host Configuration Protocol (DHCP) option which is passed from the DHCP Server to the DHCP Client to configure a list of static routes in the client. The network destinations in these routes are classless - each routing table entry includes a subnet mask.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 15% of the total text.

Network Working Group� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � T. Lemon

Request for Comments: 3442� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Nominum, Inc.

Updates: 2132� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � S. Cheshire

Category: Standards Track� � � � � � � � � � � � � � � � � � � � � � � � � � Apple Computer, Inc.

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B. Volz

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Ericsson

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � December 2002

� � � � � � � � � � � � � � � � The Classless Static Route Option for

� � � � � � � � � Dynamic Host Configuration Protocol (DHCP) version 4

Status of this Memo

� � This document specifies an Internet standards track protocol for the

� � Internet community, and requests discussion and suggestions for

� � improvements.� Please refer to the current edition of the "Internet

� � Official Protocol Standards" (STD 1) for the standardization state

� � and status of this protocol.� Distribution of this memo is unlimited.

Copyright Notice

� � Copyright (C) The Internet Society (2002).� All Rights Reserved.

Abstract

� � This document defines a new Dynamic Host Configuration Protocol

� � (DHCP) option which is passed from the DHCP Server to the DHCP Client

� � to configure a list of static routes in the client.� The network

� � destinations in these routes are classless - each routing table entry

� � includes a subnet mask.

Introduction

� � This option obsoletes the Static Route option (option 33) defined in

� � RFC 2132 [4].

� � The IP protocol [1] uses routers to transmit packets from hosts

� � connected to one IP subnet to hosts connected to a different IP

� � subnet.� When an IP host (the source host) wishes to transmit a

� � packet to another IP host (the destination), it consults its routing

� � table to determine the IP address of the router that should be used

� � to forward the packet to the destination host.

� � The routing table on an IP host can be maintained in a variety of

� � ways - using a routing information protocol such as RIP [8], ICMP

� � router discovery [6,9] or using the DHCP Router option, defined in

� � RFC 2132 [4].

Lemon, et. al.� � � � � � � � � � � � � Standards Track� � � � � � � � � � � � � � � � � � � � [Page 1]

RFC 3442� � � � � � � Classless Static Route Option for DHCPv4� � December 2002

� � In a network that already provides DHCP service, using DHCP to update

� � the routing table on a DHCP client has several virtues.� It is

� � efficient, since it makes use of messages that would have been sent

� � anyway.� It is convenient - the DHCP server configuration is already

� � being maintained, so maint...