Internet Research Task Force (IRTF) RJ Atkinson
Request for Comments: 6741 Consultant
Category: Experimental SN Bhatti
ISSN: 2070-1721 U. St Andrews
November 2012
Identifier-Locator Network Protocol (ILNP)
Engineering Considerations
Abstract
This document describes common (i.e., version independent)
engineering details for the Identifier-Locator Network Protocol
(ILNP), which is an experimental, evolutionary enhancement to IP.
This document is a product of the IRTF Routing Research Group.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for examination, experimental implementation, and
evaluation.
This document defines an Experimental Protocol for the Internet
community. This document is a product of the Internet Research Task
Force (IRTF). The IRTF publishes the results of Internet-related
research and development activities. These results might not be
suitable for deployment. This RFC represents the individual
opinion(s) of one or more members of the Routing Research Group of
the Internet Research Task Force (IRTF). Documents approved for
publication by the IRSG are not a candidate for any level of Internet
Standard; see 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/rfc6741.
Atkinson & Bhatti Experimental [Page 1]RFC 6741 ILNP Engineering November 2012Copyright Notice
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
Provisions Relating to IETF Documents
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translate it into languages other than English.
Table of Contents
1. Introduction ....................................................3
1.1. Document Roadmap ...........................................4
1.2. Terminology ................................................5
2. ILNP Identifiers ................................................5
2.1. Syntax .....................................................6
2.2. Default Values for an Identifier ...........................6
2.3. Local-Scoped Identifier Values .............................6
2.4. Multicast Identifiers ......................................7
2.5. Administration of Identifier Values ........................7
3. Encoding of Identifiers and Locators for ILNPv6 .................7
3.1. Encoding of I and L Values .................................7
3.2. Network-Level Packet Formats ..............................10
3.3. Encoding of Identifiers and Locators for ILNPv4 ...........11
4. Transport-Layer Changes ........................................12
4.1. End-System State ..........................................12
4.2. TCP/UDP Checksum Handling .................................12
4.3. ICMP Checksum Handling ....................................12
5. ILNP Communication Cache (ILCC) ................................13
5.1. Formal Definition .........................................13
5.2. Ageing ILCC Entries .......................................15
5.3. Large Numbers of Locators .................................15
5.4. Lookups into the ILCC .....................................16
6. Handling Location/Connectivity Changes .........................16
6.1. Node Location/Connectivity Changes ........................16
6.2. Network Connectivity/Locator Changes ......................17
7. Subnetting .....................................................17
7.1. Subnetting for ILNPv6 .....................................18
7.2. Subnetting for ILNPv4 .....................................19
7.3. Subnetting for Router-Router Links in IPv6/ILNPv6 .........19
8. DNS Considerations .............................................19
Atkinson & Bhatti Experimental [Page 2]RFC 6741 ILNP Engineering November 2012
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