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Link Selection sub-option for the Relay Agent Information Option for DHCPv4 (RFC3527)

IP.com Disclosure Number: IPCOM000012309D
Original Publication Date: 2003-Apr-01
Included in the Prior Art Database: 2003-Apr-29
Document File: 10 page(s) / 17K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Kinnear: AUTHOR [+4]

Abstract

This document describes the link selection sub-option of the relay- agent-information option for the Dynamic Host Configuration Protocol (DHCPv4). The giaddr specifies an IP address which determines both a subnet, and thereby a link on which a Dynamic Host Configuration Protocol (DHCP) client resides as well as an IP address that can be used to communicate with the relay agent. The subnet-selection option allows the functions of the giaddr to be split so that when one entity is performing as a DHCP proxy, it can specify the subnet/link from which to allocate an IP address, which is different from the IP address with which it desires to communicate with the DHCP server. Analogous situations exist where the relay agent needs to specify the subnet/link on which a DHCP client resides, which is different from an IP address that can be used to communicate with the relay agent.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 16% of the total text.

Network Working Group                                         K. Kinnear

Request for Comments: 3527                                      M. Stapp

Category: Standards Track                                     R. Johnson

                                                           J. Kumarasamy

                                                           Cisco Systems

                                                              April 2003

                       Link Selection sub-option

           for the Relay Agent Information Option for DHCPv4

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 (2003).  All Rights Reserved.

Abstract

   This document describes the link selection sub-option of the relay-

   agent-information option for the Dynamic Host Configuration Protocol

   (DHCPv4).  The giaddr specifies an IP address which determines both a

   subnet, and thereby a link on which a Dynamic Host Configuration

   Protocol (DHCP) client resides as well as an IP address that can be

   used to communicate with the relay agent.  The subnet-selection

   option allows the functions of the giaddr to be split so that when

   one entity is performing as a DHCP proxy, it can specify the

   subnet/link from which to allocate an IP address, which is different

   from the IP address with which it desires to communicate with the

   DHCP server.  Analogous situations exist where the relay agent needs

   to specify the subnet/link on which a DHCP client resides, which is

   different from an IP address that can be used to communicate with the

   relay agent.

1.  Introduction

   In RFC 2131, the giaddr specifies an IP address which determines a

   subnet (and from there a link) on which a DHCP client resides as well

   as an IP address which can be used to communicate with the relay

   agent.  The subnet-selection option [RFC 3011] allows these functions

   of the giaddr to be split, so that when one entity is performing as a

Kinnear, et al.             Standards Track                     [Page 1]

RFC 3527               Link Selection sub-option              April 2003

   DHCP proxy, it can specify the subnet/link from which to allocate an

   IP address that is different from the IP address with which i...