MANET IANA allocations: IANA Allocations for Mobile Ad Hoc Network (MANET) Protocols
Well-known numbers for wireless mesh routing protocols to share.
Chakeres, I., "IANA Allocations for Mobile Ad Hoc Network (MANET) Protocols", RFC 5498, DOI 10.17487/RFC5498, March 2009, <https://www.rfc-editor.org/info/rfc5498>.
@misc{rfc5498,
series = {Request for Comments},
number = 5498,
howpublished = {RFC 5498},
publisher = {RFC Editor},
doi = {10.17487/RFC5498},
url = {https://www.rfc-editor.org/info/rfc5498},
author = {I. Chakeres},
title = {{IANA Allocations for Mobile Ad Hoc Network (MANET) Protocols}},
pagetotal = 5,
year = 2009,
month = mar,
} RFC text
Contents
Network Working Group I. Chakeres
Request for Comments: 5498 CenGen
Category: Standards Track March 2009
IANA Allocations for Mobile Ad Hoc Network (MANET) Protocols
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
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Abstract
This document enumerates several common IANA allocations for use by
Mobile Ad hoc NETwork (MANET) protocols. The following well-known
numbers are required: a UDP port number, an IP protocol number, and a
link-local multicast group address.
Table of Contents
1. Introduction ....................................................2
2. Conventions Used in This Document ...............................2
3. UDP Port Number .................................................2
4. IP Protocol Number ..............................................2
5. Link-Local Multicast Group for MANET Routers ....................3
6. IANA Considerations .............................................3
7. Security Considerations .........................................4
8. Acknowledgements ................................................4
9. References ......................................................5
9.1. Normative References .......................................5
9.2. Informative References .....................................5
1. Introduction
This document enumerates several common IANA allocations for use by
one or more protocols that conform to [RFC5444]. The following
well-known numbers are required: a UDP port number, an IP protocol
number, and a link-local multicast group address. All interoperable
protocols running on these well-known IANA allocations MUST conform
to [RFC5444]. [RFC5444] provides a common format that enables one or
more protocols to share the IANA allocations defined in this document
unambiguously.
2. Conventions Used in This Document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
3. UDP Port Number
MANET routers require a well-known UDP port number [IANA] to send and
receive MANET routing protocol packets. The title of this UDP port
is "manet". The value of this UDP port is 269.
4. IP Protocol Number
MANET routers require a well-known IP protocol number [IANA] to send
and receive MANET routing protocol packets. The title of this IP
protocol number is "manet". The value of this IP protocol number is
138.
5. Link-Local Multicast Group for MANET Routers
MANET routers require a well-known, link-local multicast address
[RFC4291] to send and receive MANET routing protocol packets. The
name of the multicast address to reach link-local (LL) MANET routers
is "LL-MANET-Routers".
For IPv4, a well-known, link-local scope multicast address is
required. The address for LL-MANET-Routers is 224.0.0.109.
For IPv6, a well-known, link-local scope multicast address is
required. The address for LL-MANET-Routers is FF02:0:0:0:0:0:0:6D.
6. IANA Considerations
This document enumerates several common IANA allocations for use by
one or more protocols that conform to [RFC5444]. Specifically, the
following well-known numbers have been assigned: a UDP port
(Section 3), an IP protocol number (Section 4), and a link-local
multicast group address (Section 5).
Action 1:
IANA has made the following assignments in the "PORT NUMBERS"
registry:
sub-registry "WELL KNOWN PORT NUMBERS"
Keyword Decimal Description References
------- ------- ----------- ----------
manet 269/udp MANET Protocols [RFC5498]
Action 2:
IANA has made the following assignments in the "PROTOCOL NUMBERS"
registry:
sub-registry "WELL KNOWN PORT NUMBERS"
Keyword Decimal Description References
------- ------- ----------- ----------
manet 138 MANET Protocols [RFC5498]
Action 3:
IANA has made the following assignments in the "Internet Multicast
Addresses" registry:
sub-registry "224.0.0.0 - 224.0.0.255 (224.0.0/24) Local Network
Control Block"
224.0.0.109 LL-MANET-Routers [RFC5498]
Action 4:
IANA has made the following assignments in the "INTERNET PROTOCOL
VERSION 6 MULTICAST ADDRESSES" registry:
sub-registry "Fixed Scope Multicast Addresses"
sub-sub-registry "Link-Local Scope"
FF02:0:0:0:0:0:0:6D LL-MANET-Routers [RFC5498]
7. Security Considerations
This document specifies only well-known numbers for protocols that
conform to [RFC5444], and it not does not specify the protocols that
carry the information across the network. Each protocol using these
well-known numbers may have its own set of security issues, but those
issues are not affected by using the IANA allocations specified
herein.
The security issues associated with possibly operating multiple
cooperating protocols using the same IANA assignments (e.g., UDP
port) MUST be addressed in each protocol's specification.
8. Acknowledgements
Fred Templin, Bill Fenner, Alexandru Petrescu, Sam Weiler, Ross
Callon, and Lars Eggert provided valuable input to this document.
9. References
9.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC4291] Hinden, R. and S. Deering, "IP Version 6 Addressing
Architecture", RFC 4291, February 2006.
[RFC5444] Clausen, T., Dearlove, C., Dean, J., and C. Adjih,
"Generalized Mobile Ad Hoc Network (MANET) Packet/Message
Format", RFC 5444, February 2009.
9.2. Informative References
[IANA] http://www.iana.org/
Author's Address
Ian D Chakeres
CenGen
9250 Bendix Road North
Columbia MD 21045 USA
EMail: ian.chakeres@gmail.com
URI: http://www.ianchak.com/
AI ELI5
On this page
§1Sharing Numbers for Ad Hoc Networks
Mobile ad hoc networks (MANETs) are wireless networks where devices forward traffic for each other without a central authority. Many different routing protocols exist for MANETs, and they all need the same handful of well-known identifiers to operate.
RFC 5498 defines a shared set of numbers that conforming MANET protocols can use, avoiding duplication. All protocols using these numbers must conform to RFC 5444, which provides a common message format.
Wireless networks with many independent devices need special numbers so the devices know how to talk to each other.
§2The Well-Known Numbers
Three allocations are specified. First, MANET routers use UDP port 269 to send and receive routing protocol packets. Second, they use IP protocol number 138 for the same purpose. Third, IPv4 routers use the link-local multicast address 224.0.0.109 and IPv6 routers use FF02:0:0:0:0:0:0:6D to reach all MANET routers on the local link.
These numbers are assigned to applications named manet in the IANA registries. The multicast address is identified as LL-MANET-Routers.
Port 269, protocol number 138, and multicast addresses 224.0.0.109 (IPv4) or FF02::6D (IPv6) are the reserved numbers for mesh routing.
§3RFC 5444 Requirement
Any protocol using these allocations must conform to RFC 5444, the Generalized MANET Packet/Message Format. This requirement ensures that when multiple MANET protocols share the same port and protocol number, they can coexist on the same network without colliding.
RFC 5444 provides a common header format that allows routers to parse and dispatch messages from different protocols even when they arrive on the same port.
All protocols that share these numbers must follow the same message format so they do not confuse each other.
§4Security Notes
RFC 5498 itself defines only the allocations, not the protocols. Each MANET protocol using these numbers may have its own security issues, but those issues are independent of the allocation. However, when multiple protocols share the same port, the specification of each protocol must address how security policies interact.
Sharing numbers does not create new problems, but each protocol must still be secure on its own.