Browse Prior Art Database

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...