DLEP Latency Range Extension
draft-ietf-manet-dlep-latency-extension-03

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Last updated 2018-02-21
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Network Working Group                                           B. Cheng
Internet-Draft                                        Lincoln Laboratory
Intended status: Standards Track                          L. Berger, Ed.
Expires: August 25, 2018                         LabN Consulting, L.L.C.
                                                       February 21, 2018

                      DLEP Latency Range Extension
               draft-ietf-manet-dlep-latency-extension-03

Abstract

   This document defines an extension to the DLEP protocol to provide
   the range of latency that may be experienced on a link.

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
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   This Internet-Draft will expire on August 25, 2018.

Copyright Notice

   Copyright (c) 2018 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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   described in the Simplified BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Key Words . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Extension Usage and Identification  . . . . . . . . . . . . .   2
   3.  Latency Range Data Item . . . . . . . . . . . . . . . . . . .   3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  Extension Type Value  . . . . . . . . . . . . . . . . . .   4
     5.2.  Data Item Value . . . . . . . . . . . . . . . . . . . . .   4
   6.  Normative References  . . . . . . . . . . . . . . . . . . . .   4
   Appendix A.  Acknowledgments  . . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   The Dynamic Link Exchange Protocol (DLEP) is defined in [RFC8175].
   It provides the exchange of link related control information between
   DLEP peers.  DLEP peers are comprised of a modem and a router.  DLEP
   defines a base set of mechanisms as well as support for possible
   extensions.  This document defines one such extension.

   The base DLEP specification includes the Latency metric which
   provides a single latency value on a link, which is implementation
   dependent.  This document adds the ability to relay the minimum and
   maximum latency range seen on a link.  The extension defined in this
   document is referred to as "Latency Range".

   This document defines a new DLEP Extension Type Value in Section 2
   which is used to indicate the use of the extension, and one new DLEP
   Data Item in Section 3.

1.1.  Key Words

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

2.  Extension Usage and Identification

   The use of the Latency Range Extension SHOULD be configurable.  To
   indicate that the Latency Range Extension is to be used, an
   implementation MUST include the Latency Range Extension Type Value in
   the Extensions Supported Data Item.  The Extensions Supported Data
   Item is sent and processed according to [RFC8175].

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   Note: the usage of the extension defined in this document does not
   impact processing associated with the Latency Data Item defined in
   [RFC8175].

   The Latency Range Extension Type Value is TBA1, see Section 5.

3.  Latency Range Data Item

   The Latency Range Data Item serves much the same purpose as the
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