Virtual Subnet Selection Options for DHCPv4 and DHCPv6
RFC 6607
Document | Type |
RFC - Proposed Standard
(April 2012; No errata)
Updates RFC 3046
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|
---|---|---|---|
Authors | Kim Kinnear , Mark Stapp , Richard Johnson | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6607 (Proposed Standard) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Ralph Droms | ||
IESG note | John Jason Brzozowski (john_brzozowski@cable.comcast.com) is the document shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) K. Kinnear Request for Comments: 6607 R. Johnson Updates: 3046 M. Stapp Category: Standards Track Cisco Systems ISSN: 2070-1721 April 2012 Virtual Subnet Selection Options for DHCPv4 and DHCPv6 Abstract This memo defines a DHCPv4 Virtual Subnet Selection (VSS) option, a DHCPv6 VSS option, and the DHCPv4 VSS and VSS-Control sub-options carried in the DHCPv4 Relay Agent Information option. These are intended for use by DHCP clients, relay agents, and proxy clients in situations where VSS information needs to be passed to the DHCP server for proper address or prefix allocation to take place. For the DHCPv4 option and Relay Agent Information sub-options, this memo documents and extends existing usage as per RFC 3942. This memo updates RFC 3046 regarding details relating to the copying of sub- options (see Section 8). Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6607. Kinnear, et al. Standards Track [Page 1] RFC 6607 Virtual Subnet Selection Options April 2012 Copyright Notice Copyright (c) 2012 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Kinnear, et al. Standards Track [Page 2] RFC 6607 Virtual Subnet Selection Options April 2012 Table of Contents 1. Introduction ....................................................3 2. Terminology .....................................................4 3. Virtual Subnet Selection Options and Sub-Options: Definitions ...6 3.1. DHCPv4 Virtual Subnet Selection Option .....................6 3.2. DHCPv4 Virtual Subnet Selection Sub-Option .................6 3.3. DHCPv4 Virtual Subnet Selection Control Sub-Option .........7 3.4. DHCPv6 Virtual Subnet Selection Option .....................7 3.5. Virtual Subnet Selection Type and Information ..............8 4. Overview of Virtual Subnet Selection Usage ......................8 4.1. VPN Assignment by the DHCP Relay Agent .....................9 4.2. VPN Assignment by the DHCP Server .........................12 4.3. Required Support ..........................................14 4.4. Alternative VPN Assignment Approaches .....................14 5. Relay Agent Behavior ...........................................15 5.1. VPN Assignment by the DHCP Server .........................16 5.2. DHCP Leasequery ...........................................17 6. Client Behavior ................................................17 7. Server Behavior ................................................19 7.1. Returning the DHCPv4 or DHCPv6 Option .....................20 7.2. Returning the DHCPv4 Sub-Option ...........................20 7.3. Making Sense of Conflicting VSS Information ...............21 8. Update to RFC 3046 .............................................22Show full document text