Extending ICMP for Interface and Next-Hop Identification
RFC 5837

 
Document Type RFC - Proposed Standard (April 2010; No errata)
Was draft-atlas-icmp-unnumbered (individual in int area)
Last updated 2013-03-02
Stream IETF
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Stream WG state (None)
Consensus Unknown
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IESG IESG state RFC 5837 (Proposed Standard)
Telechat date
Responsible AD Jari Arkko
Send notices to akatlas@google.com, draft-atlas-icmp-unnumbered@ietf.org, watkinal@us.ibm.com
Internet Engineering Task Force (IETF)                     A. Atlas, Ed.
Request for Comments: 5837                                            BT
Category: Standards Track                                 R. Bonica, Ed.
ISSN: 2070-1721                                         Juniper Networks
                                                       C. Pignataro, Ed.
                                                                 N. Shen
                                                           Cisco Systems
                                                              JR. Rivers
                                                              Consultant
                                                              April 2010

        Extending ICMP for Interface and Next-Hop Identification

Abstract

   This memo defines a data structure that can be appended to selected
   ICMP messages.  The ICMP extension defined herein can be used to
   identify any combination of the following: the IP interface upon
   which a datagram arrived, the sub-IP component of an IP interface
   upon which a datagram arrived, the IP interface through which the
   datagram would have been forwarded had it been forwardable, and the
   IP next hop to which the datagram would have been forwarded.

   Devices can use this ICMP extension to identify interfaces and their
   components by any combination of the following: ifIndex, IPv4
   address, IPv6 address, name, and MTU.  ICMP-aware devices can use
   these extensions to identify both numbered and unnumbered interfaces.

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/rfc5837.

Atlas, et al.                Standards Track                    [Page 1]
RFC 5837                     ICMP Unnumbered                  April 2010

Copyright Notice

   Copyright (c) 2010 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.

   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.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conventions Used In This Document  . . . . . . . . . . . . . .  5
   3.  Applications . . . . . . . . . . . . . . . . . . . . . . . . .  5
     3.1.  Application to Traceroute  . . . . . . . . . . . . . . . .  5
     3.2.  Policy and MTU Detection . . . . . . . . . . . . . . . . .  6
   4.  Interface Information Object . . . . . . . . . . . . . . . . .  6
     4.1.  C-Type Meaning in an Interface Information Object  . . . .  7
     4.2.  Interface IP Address Sub-Object  . . . . . . . . . . . . .  9
     4.3.  Interface Name Sub-Object  . . . . . . . . . . . . . . . . 10
     4.4.  Interface Information Object Examples  . . . . . . . . . . 10
     4.5.  Usage  . . . . . . . . . . . . . . . . . . . . . . . . . . 13
   5.  Network Address Translation Considerations . . . . . . . . . . 14
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 14
   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 15
   8.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 16
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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