Bulk DHCPv4 Lease Query
draft-ietf-dhc-dhcpv4-bulk-leasequery-06

The information below is for an old version of the document
Document Type Active Internet-Draft (dhc WG)
Last updated 2012-03-12
Replaces draft-dtv-dhc-dhcpv4-bulk-leasequery, draft-kinnear-dhc-dhcpv4-bulk-leasequery
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state WG Document
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IESG IESG state IESG Evaluation::AD Followup
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Needs a YES. Needs 10 more YES or NO OBJECTION positions to pass.
Responsible AD Ralph Droms
IESG note Ted Lemon (ted.lemon@nominum.com) is the document shepherd.
Send notices to dhc-chairs@tools.ietf.org, draft-ietf-dhc-dhcpv4-bulk-leasequery@tools.ietf.org
DHC Working Group                                            Kim Kinnear
Internet Draft                                                Mark Stapp
Intended Status: Standards Track                     Cisco Systems, Inc.
Expires: September 12, 2012                                       D. Rao
                                                                B. Joshi
                                               Infosys Technologies Ltd.
                                                            Neil Russell
                                                      BMC Software, Inc.
                                                          March 12, 2012

                        Bulk DHCPv4 Lease Query
             <draft-ietf-dhc-dhcpv4-bulk-leasequery-06.txt>

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
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   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
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   include Simplified BSD License text as described in Section 4.e of

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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Abstract

   The Dynamic Host Configuration Protocol for IPv4 (DHCPv4) Leasequery
   extension allows a requestor to request information about DHCPv4
   bindings. This mechanism is limited to queries for individual
   bindings. In some situations individual binding queries may not be
   efficient, or even possible. This document extends the DHCPv4
   Leasequery protocol to allow for bulk transfer of DHCPv4 address
   binding data via TCP.

Table of Contents

    1.  Introduction................................................. 3
    2.  Terminology.................................................. 4
    3.  Design Goals................................................. 7
    3.1.  Information Acquisition before Data Starts................. 7
    3.2.  Lessen need for Caching and Negative Caching............... 7
    3.3.  Antispoofing in 'Fast Path'................................ 8
    3.4.  Minimize data transmission................................. 8
    4.  Protocol Overview............................................ 8
    5.  Interaction Between UDP Leasequery and Bulk Leasequery....... 10
    6.  Message and Option Definitions............................... 10
    6.1.  Message Framing for TCP.................................... 10
    6.2.  New or Changed Options..................................... 11
    6.3.  Connection and Transmission Parameters..................... 19
    7.  Requestor Behavior........................................... 19
    7.1.  Connecting and General Processing.......................... 19
    7.2.  Forming a Bulk Leasequery.................................. 20
    7.3.  Processing Bulk Replies.................................... 22
    7.4.  Processing Time Values in Leasequery messages.............. 24
    7.5.  Querying Multiple Servers.................................. 25
    7.6.  Making Sense Out of Multiple Responses Concerning a Single. 25
    7.7.  Multiple Queries to a Single Server over One Connection.... 26
    7.8.  Closing Connections........................................ 27

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    8.  Server Behavior.............................................. 27
    8.1.  Accepting Connections...................................... 27
    8.2.  Replying to a Bulk Leasequery.............................. 28
    8.3.  Building a Single Reply for Bulk Leasequery................ 31
    8.4.  Multiple or Parallel Queries............................... 32
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