Active DHCPv4 Lease Query
draft-ietf-dhc-dhcpv4-active-leasequery-06

The information below is for an old version of the document
Document Type Active Internet-Draft (dhc WG)
Last updated 2015-10-01 (latest revision 2015-09-14)
Replaces draft-kinnear-dhc-dhcpv4-active-leasequery
Stream IETF
Intended RFC status Proposed Standard
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Send notices to "Tomek Mrugalski" <tomasz.mrugalski@gmail.com>
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Network Working Group                                         K. Kinnear
Internet-Draft                                                  M. Stapp
Updates: 6926 (if approved)                                      B. Volz
Intended status: Standards Track                           Cisco Systems
Expires: March 17, 2016                                       N. Russell
                                                                 Staples
                                                      September 14, 2015

                       Active DHCPv4 Lease Query
             draft-ietf-dhc-dhcpv4-active-leasequery-06.txt

Abstract

   The Dynamic Host Configuration Protocol for IPv4 (DHCPv4) has been
   extended with a Leasequery capability that allows a requestor to
   request information about DHCPv4 bindings [RFC4388].  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 requestor with
   Leasequery data is sometimes desired.  This document expands on the
   DHCPv4 Leasequery protocol, and allows for active transfer of near
   real-time DHCPv4 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
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   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 March 17, 2016.

Copyright Notice

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

Kinnear, et al.          Expires March 17, 2016                 [Page 1]
Internet-Draft          Active DHCPv4 Lease Query         September 2015

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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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  . . . . . . . . . . . . . . .   8
     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  . . . . . . . . . . . . . . . . . .   9
     5.3.  Connection and Transmission Parameters  . . . . . . . . .  10
   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  . . . . . . . . . . . . . .  13
     7.4.  Processing Active Replies . . . . . . . . . . . . . . . .  14
       7.4.1.  Processing Replies from a Request Containing a query-
               start-time  . . . . . . . . . . . . . . . . . . . . .  15
     7.5.  Closing Connections . . . . . . . . . . . . . . . . . . .  18
   8.  Server Behavior . . . . . . . . . . . . . . . . . . . . . . .  18
     8.1.  Accepting Connections . . . . . . . . . . . . . . . . . .  18
       8.1.1.  Update to RFC 6926  . . . . . . . . . . . . . . . . .  20
     8.2.  Replying to an Active Leasequery  . . . . . . . . . . . .  20
     8.3.  Multiple or Parallel Queries  . . . . . . . . . . . . . .  22
     8.4.  Closing Connections . . . . . . . . . . . . . . . . . . .  22
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  23
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  23
   11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  24
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  24
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