Active DHCPv4 Lease Query
draft-ietf-dhc-dhcpv4-active-leasequery-02

The information below is for an old version of the document
Document Type Active Internet-Draft (dhc WG)
Last updated 2015-05-20 (latest revision 2015-03-02)
Replaces draft-kinnear-dhc-dhcpv4-active-leasequery
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state WG Consensus: Waiting for Write-Up
Revised I-D Needed - Issue raised by WG
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Send notices to "Tomek Mrugalski" <tomasz.mrugalski@gmail.com>
Network Working Group                                         K. Kinnear
Internet-Draft                                                  M. Stapp
Updates: 6926 (if approved)                                      B. Volz
Intended status: Standards Track                           Cisco Systems
Expires: September 3, 2015                                    N. Russell
                                                                 Staples
                                                           March 2, 2015

                       Active DHCPv4 Lease Query
             draft-ietf-dhc-dhcpv4-active-leasequery-02.txt

Abstract

   The Dynamic Host Configuration Protocol for IPv4 (DHCPv4) has been
   extended with a Leasequery capability that allows a client to request
   information about DHCPv4 bindings.  That mechanism is limited to
   queries for individual bindings.  In some situations individual
   binding queries may not be efficient, or even possible.  In addition,
   continuous update of an external client with Leasequery data is
   sometimes desired.  This document expands on the DHCPv4 Leasequery
   protocol, and allows for active transfer of near real-time DHCPv4
   address binding information data via TCP.  This document updates
   RFC6926, DHCPv4 Bulk Leasequery.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 3, 2015.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Kinnear, et al.         Expires September 3, 2015               [Page 1]
Internet-Draft          Active DHCPv4 Lease Query             March 2015

   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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Interaction Between Active Leasequery and Bulk Leasequery . .   7
   5.  Message and Option Definitions  . . . . . . . . . . . . . . .   7
     5.1.  Message Framing for TCP . . . . . . . . . . . . . . . . .   8
     5.2.  New or Changed Options  . . . . . . . . . . . . . . . . .   8
       5.2.1.  dhcp-message-type . . . . . . . . . . . . . . . . . .   8
       5.2.2.  dhcp-status-code  . . . . . . . . . . . . . . . . . .   8
     5.3.  Connection and Transmission Parameters  . . . . . . . . .   9
   6.  Information Communicated by Active Leasequery . . . . . . . .  10
   7.  Requestor Behavior  . . . . . . . . . . . . . . . . . . . . .  11
     7.1.  General Processing  . . . . . . . . . . . . . . . . . . .  11
     7.2.  Initiating a Connection . . . . . . . . . . . . . . . . .  11
     7.3.  Forming an Active Leasequery  . . . . . . . . . . . . . .  12
     7.4.  Processing Active Replies . . . . . . . . . . . . . . . .  13
       7.4.1.  Processing Replies from a Request Containing a query-
               start-time  . . . . . . . . . . . . . . . . . . . . .  15
     7.5.  Closing Connections . . . . . . . . . . . . . . . . . . .  17
   8.  Server Behavior . . . . . . . . . . . . . . . . . . . . . . .  17
     8.1.  Accepting Connections . . . . . . . . . . . . . . . . . .  17
     8.2.  Replying to an Active Leasequery  . . . . . . . . . . . .  19
     8.3.  Multiple or Parallel Queries  . . . . . . . . . . . . . .  21
     8.4.  Closing Connections . . . . . . . . . . . . . . . . . . .  21
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  21
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  22
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  23
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  23
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  23
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