[Docs] [txt|pdf] [Tracker] [WG] [Email] [Diff1] [Diff2] [Nits]
Versions: 00 01 02 03 04 05 06 07 08 09 10 11
12 13 14 15 16 17 RFC 5444
Mobile Ad hoc Networking (MANET) T. Clausen
Internet-Draft LIX, Ecole Polytechnique, France
Intended status: Standards Track C. Dearlove
Expires: December 31, 2007 BAE Systems Advanced Technology
Centre
J. Dean
Naval Research Laboratory
C. Adjih
INRIA Rocquencourt
June 29, 2007
Generalized MANET Packet/Message Format
draft-ietf-manet-packetbb-07
Status of this Memo
By submitting this Internet-Draft, each author represents that any
applicable patent or other IPR claims of which he or she is aware
have been or will be disclosed, and any of which he or she becomes
aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet-
Drafts.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html.
This Internet-Draft will expire on December 31, 2007.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Clausen, et al. Expires December 31, 2007 [Page 1]
Internet-Draft MANET packet format June 2007
Abstract
This document specifies a multi-message packet format that may be
used by mobile ad hoc network routing and other protocols.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Applicability Statement . . . . . . . . . . . . . . . . . . . 6
4. Protocol Overview and Functioning . . . . . . . . . . . . . . 7
5. Signaling Framework . . . . . . . . . . . . . . . . . . . . . 8
5.1. Packets . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2. Messages . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.2.1. Address Blocks . . . . . . . . . . . . . . . . . . . . 11
5.3. TLVs and TLV Blocks . . . . . . . . . . . . . . . . . . . 13
5.3.1. TLVs . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.3.2. Constraints . . . . . . . . . . . . . . . . . . . . . 16
5.4. Padding . . . . . . . . . . . . . . . . . . . . . . . . . 16
6. TLV specification . . . . . . . . . . . . . . . . . . . . . . 18
6.1. Address Block TLV Specification . . . . . . . . . . . . . 18
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
8. Security Considerations . . . . . . . . . . . . . . . . . . . 21
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.1. Normative References . . . . . . . . . . . . . . . . . . . 22
9.2. Informative References . . . . . . . . . . . . . . . . . . 22
Appendix A. Examples . . . . . . . . . . . . . . . . . . . . . . 23
A.1. Address Block Examples . . . . . . . . . . . . . . . . . . 23
A.2. TLV Examples . . . . . . . . . . . . . . . . . . . . . . . 24
Appendix B. Illustrations . . . . . . . . . . . . . . . . . . . 27
Appendix B.1. Packet . . . . . . . . . . . . . . . . . . . . . . . 27
Appendix B.2. Message and Padding . . . . . . . . . . . . . . . . 29
Appendix B.3. Message Body . . . . . . . . . . . . . . . . . . . . 35
Appendix B.4. Address Block . . . . . . . . . . . . . . . . . . . 36
Appendix B.5. TLV Block . . . . . . . . . . . . . . . . . . . . . 38
Appendix B.6. TLV . . . . . . . . . . . . . . . . . . . . . . . . 38
Appendix C. Complete Example . . . . . . . . . . . . . . . . . . 44
Appendix D. Contributors . . . . . . . . . . . . . . . . . . . . 46
Appendix E. Acknowledgements . . . . . . . . . . . . . . . . . . 47
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 48
Intellectual Property and Copyright Statements . . . . . . . . . . 49
Clausen, et al. Expires December 31, 2007 [Page 2]
Internet-Draft MANET packet format June 2007
1. Introduction
This document specifies the syntax of a general purpose multi-message
packet format for information exchange between MANET routers.
Messages consist of a message header, which is designed for control
of message dissemination, and a message body, which contains protocol
information. Only the syntax of the message body is specified. All
syntactical entities, including messages and packets, are specified
using regular expressions.
This document specifies:
o A packet format, allowing zero or more messages to be contained
within a single transmission, and optionally including a packet
header. A packet with zero messages may be sent in case the only
information to exchange is contained in the packet header (such as
a "keep alive" sequence number).
o A message format, where a message is composed of a message header
and a message body.
o A message header format which allows a node to make forwarding
decisions based on the node's present state and the message
header, without inspecting and processing the message body, and
independently of the TTL or hop limit information in the IP
header. Message header information permits single- and multi-hop
message diffusion.
o A message body format, containing attributes associated with the
message or the originator of the message, as well as blocks of
addresses with associated attributes.
o An address block format, where an address block represents sets of
addresses in a compact (compressed) form.
o A generalized type-length-value (TLV) format representing
attributes. Multiple TLVs can be included and associated with a
packet, a message, an address, or a set of addresses.
The specification has been explicitly designed with the following
properties, listed in no particular order, in mind:
Parsing logic - the regular expression specification facilitates
generic, protocol independent, parsing logic.
Clausen, et al. Expires December 31, 2007 [Page 3]
Internet-Draft MANET packet format June 2007
Extensibility - packets and messages defined by a protocol using
this specification are extensible through defining new message
types and new TLVs. Existing protocol specifications using this
specification will be able to correctly identify and skip such new
message types and TLVs, while correctly parsing the remainder of
the packet and message.
Efficiency - when reported addresses share common bit sequences
(e.g. prefixes or IPv6 interface identifiers) the address block
representation allows for a compact representation. Compact
message headers are ensured through permitting inclusion of only
required message header elements.
Separation of forwarding and processing - duplicate detection and
controlled scope message forwarding decisions can be made using
information contained in the message header, without processing
the message body.
Clausen, et al. Expires December 31, 2007 [Page 4]
Internet-Draft MANET packet format June 2007
2. Terminology
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. [1].
Additionally, this document uses the following terminology:
Packet - the top level entity in this specification. Packets are
transmitted over a single logical hop and are not forwarded. A
packet contains zero or more messages, and may contain a packet
header.
Message - the fundamental entity carrying protocol information, in
the form of addresses and TLVs. Messages are transmitted in
packets, and may be forwarded based on their header information.
Address - an address of the same length as the source IP address in
the IP datagram carrying the packet.
TLV - a Type-Length-Value structure. This is a generic way in which
an attribute can be represented and correctly parsed, without the
parser having to understand the attribute.
element - a syntactic entity defined in the regular expression
specification, represented using the notation <foo>.
<foo> - if <foo> is an 8 or 16 bit field then <foo> is also used to
represent the value of that field.
? - zero or one occurrences of the preceding element.
* - zero or more occurrences of the preceding element.
bar - a variable, usually obtained through calculations based on the
value(s) of field(s). Variables are introduced into the
specification solely as a means to clarify the description.
address-length - a variable whose value is the length of an address
in octets, it is 4 if using IPv4, 16 if using IPv6.
Clausen, et al. Expires December 31, 2007 [Page 5]
Internet-Draft MANET packet format June 2007
3. Applicability Statement
This specification describes a generic multi-message packet format,
for carrying MANET routing protocol signals. The specification has
been developed from that used by OLSR (The Optimized Link State
Routing Protocol) [4].
The specification is designed specifically with IP (IPv4/IPv6) in
mind. All addresses within a control message are assumed to be of
the same size, deduced from IP. In the case of mixed IPv6 and IPv4
addresses, IPv4 addresses are represented as IPv4-mapped IPv6
addresses as specified in [2].
The messages defined by this specification are designed to carry
routing protocol signals between MANET routers, and to support scope
limited diffusion, as well as point to point signaling in a multi-hop
network.
The packets defined by this specification are designed to carry a
number of messages between in a single transmission. The packets may
be unicast or multicast and may use any transport protocol (TCP, UDP,
...) appropriate to the protocol using this specification and may
travel over a single logical hop which might consist of one or more
IP hops. When the diffusion mechanism enabled by this specification
is employed, UDP may be most appropriate.
This specification is particularly appropriate for extensible
protocols. It offers external extensibility in the form of new
message types. It offers internal extensibility in the form of TLVs,
which may be added to existing message types.
A protocol using the multi-message packet format defined by this
specification may constrain the syntax (for example requiring a full
message header) and features (for example specifying the suggested
diffusion mechanism) that the protocol will employ.
Clausen, et al. Expires December 31, 2007 [Page 6]
Internet-Draft MANET packet format June 2007
4. Protocol Overview and Functioning
This specification does not describe a protocol. It describes a
packet format, which may be used by any mobile ad hoc network routing
or other protocol.
Clausen, et al. Expires December 31, 2007 [Page 7]
Internet-Draft MANET packet format June 2007
5. Signaling Framework
This section provides syntactical specification of a packet,
represented by the element <packet> and the elements from which it is
composed. The specification is given in the form of regular
expressions. Illustrations of specified elements are given in
Appendix B.
The length of a <packet> is obtained as the size of the payload of
the transport protocol employed.
5.1. Packets
<packet> is defined by:
<packet> = {<packet-header><pad-octet>*}?
{<message><pad-octet>*}*
where <message> is defined in Section 5.2, and <pad-octet> is defined
in Section 5.4. Successful parsing is terminated when all octets are
used.
<packet-header> is defined by:
<packet-header> = <zero>
<packet-semantics>
<packet-seq-number>?
<tlv-block>?
where:
<zero> is an 8 bit field with all bits cleared ('0'). This field
serves to identify that the packet starts with a packet header.
<packet-semantics> is an 8 bit field, specifying the composition of
the packet header:
bit 0 (pnoseqnum): if cleared ('0'), then the packet header
contains a <packet-seq-number>. If set ('1'), then the packet
header does not include a <packet-seq-number>.
bit 1 (ptlv): if cleared ('0'), then the packet header does not
include a TLV block. If set ('1'), then the packet header
includes a TLV block.
Clausen, et al. Expires December 31, 2007 [Page 8]
Internet-Draft MANET packet format June 2007
bits 2-7: are RESERVED, and MUST each be cleared ('0') to be in
conformance with this version of the specification.
<packet-seq-number> is omitted if the pnoseqnum bit is set ('1'),
otherwise is a 16 bit field, specifying a packet sequence number.
<tlv-block> is omitted if the ptlv bit is cleared ('0'), and is
otherwise defined in Section 5.3.
Note that since the message type zero is reserved (see Section 7),
the presence or absence of a packet header can be determined by
inspecting the first octet of the packet.
5.2. Messages
Information is carried through messages. Messages contain:
o A message header.
o A message TLV block that contains zero or more TLVs, associated
with the whole message.
o Zero or more address blocks, each containing one or more
addresses.
o A TLV block, containing zero or more TLVs, following each address
block.
<message> is defined by:
<message> = <msg-header>
<tlv-block>
{<addr-block><tlv-block>}*
<msg-header> = <msg-type>
<msg-semantics>
<msg-size>
<msg-header-info>
<msg-header-info> = <originator-address>?
<hop-limit>?
<hop-count>?
<msg-seq-number>?
where:
Clausen, et al. Expires December 31, 2007 [Page 9]
Internet-Draft MANET packet format June 2007
<tlv-block> is defined in Section 5.3.
<addr-block> is defined in Section 5.2.1.
<msg-type> is an 8 bit field, specifying the type of message. A
type with all bits cleared ('0') MUST NOT be used.
<msg-semantics> is an 8 bit field, specifying the interpretation of
the remainder of the message header:
bit 0 (noorig): If cleared ('0'), then <originator-address> is
included in the <msg-header-info>. If set ('1'), then
<originator-address> is not included in the <msg-header-info>.
bit 1 (nohoplimit): If cleared ('0'), then <hop-limit> is
included in the <msg-header-info>. If set ('1'), then <hop-
limit> is not included in the <msg-header-info>.
bit 2 (nohopcount): If cleared ('0'), then <hop-count> is
included in the <msg-header-info>. If set ('1'), then <hop-
count> is not included in the <msg-header-info>
bit 3 (noseqnum): If cleared ('0'), then <msg-seq-number> is
included in the <msg-header-info>. If set ('1'), then <msg-
seq-number> is not included in the <msg-header-info>.
bit 4 (typedep): If cleared ('0'), then the message sequence
number in the message is type-independent. If set ('1'), then
the message sequence number contained in the message is type
dependent (the message originator maintains a sequence number
specific to <msg-type>). This bit MUST be cleared ('0') if the
noorig bit is set ('1').
bits 5-7: are RESERVED and MUST each be cleared ('0') to be in
conformance with this version of the specification.
If bit 0 (noorig) and bit 3 (noseqnum) are both cleared, then the
message header provides for duplicate suppression.
If bit 1 (nohoplimit) and bit 2 (nohopcount) are both cleared,
then the message header provides for scope-delimited forwarding.
<msg-size> is a 16 bit field, specifying the size of the <message>,
counted in octets.
Clausen, et al. Expires December 31, 2007 [Page 10]
Internet-Draft MANET packet format June 2007
<originator-address> is an identifier of length equal to address-
length, which serves to uniquely identify the node that originated
the message.
<hop-limit> is an 8 bit field, which contains the maximum number of
logical hops a message should be further transmitted.
<hop-count> is an 8 bit field, which contains the number of logical
hops a message has traveled.
<msg-seq-number> is a 16 bit field, which contains a unique number,
generated by the originator node. The <originator-address>, <msg-
seq-number>, and, if the typedep bit in the <msg-semantics> field
is set, the <msg-type> of a message serves to uniquely identify
the message in the network.
5.2.1. Address Blocks
An address is specified as a sequence of address-length octets of the
form head:mid:tail. An address block is an ordered set of addresses
sharing the same head and tail, and having individual mids. Network
addresses may be represented using the PREFIX_LENGTH TLV defined in
Section 6.
<address block> is defined by:
<address-block> = <num-addr>
<addr-semantics>
<head-length>?
<head>?
<tail-length>?
<tail>?
<mid>*
where:
<num-addr> is an 8 bit field containing the number of addresses
represented in the address block, which MUST NOT be zero.
<addr-semantics> is an 8 bit field specifying the interpretation of
the remainder of the address block:
bit 0 (nohead): if cleared ('0'), then <head-length> is included
in <address-block>, and <head> may be included in <address-
block>. If set ('1'), then <head-length> and <head> are not
included in <address-block>.
Clausen, et al. Expires December 31, 2007 [Page 11]
Internet-Draft MANET packet format June 2007
bit 1 (notail) and bit 2 (zerotail): MUST NOT both be set ('1').
Otherwise, they are interpreted according to Table 1.
+--------+----------+---------------+-----------------+
| notail | zerotail | <tail-length> | <tail> |
+--------+----------+---------------+-----------------+
| 0 | 0 | included | may be included |
| | | | |
| 0 | 1 | included | not included |
| | | | |
| 1 | 0 | not included | not included |
+--------+----------+---------------+-----------------+
Table 1
bits 3-7: are RESERVED and MUST each be cleared ('0') to be in
accordance with this version of the specification.
<head-length> if present is an 8 bit field, which contains the total
length (in octets) of the head of all of the addresses.
head-length is a variable, defined to equal <head-length> if
present, or 0 otherwise.
<head> is omitted if head-length == 0, otherwise it is a field of
the head-length leftmost octets of all the addresses.
<tail-length> if present is an 8 bit field, which contains the total
length (in octets) of the tail of all of the addresses.
tail-length is a variable, defined to equal <tail-length> if
present, or 0 otherwise.
<tail> is omitted if tail-length == 0 or if the zerotail bit is set
('1'), otherwise it is a field of the tail-length rightmost octets
of all the addresses. If the zerotail bit is set ('1') then the
tail-length rightmost octets of all the addresses are all 0.
mid-length is a variable, which MUST be non-negative, defined by:
* mid-length = address-length - head-length - tail-length
<mid> is omitted if mid-length == 0, otherwise each <mid> is a field
of length mid-length octets, representing the mid of the
corresponding address in the address block.
Clausen, et al. Expires December 31, 2007 [Page 12]
Internet-Draft MANET packet format June 2007
5.3. TLVs and TLV Blocks
A TLV block is defined by:
<tlv-block> = <tlvs-length>
<tlv>*
where:
<tlvs-length> is a 16 bit field, which contains the total length (in
octets) of all of the immediately following <tlv> elements.
<tlv> is defined in Section 5.3.1.
5.3.1. TLVs
There are three kinds of TLV, each represented by an element <tlv>:
o A packet TLV, included in a packet header.
o A message TLV, included in a message before all address blocks.
o An address block TLV, included in a TLV block following an address
block. An address block TLV applies to:
* all addresses in the address block; OR
* any continuous sequence of addresses in the address block; OR
* a single address in the address block.
<tlv> is defined by:
<tlv> = <tlv-type>
<tlv-subtype>?
<tlv-semantics>
<index-start>?
<index-stop>?
<length>?
<value>?
where:
<tlv-type> is an 8 bit field, specifying the type of the TLV,
specific to the TLV kind (i.e. packet, message, or address block
TLV).
Clausen, et al. Expires December 31, 2007 [Page 13]
Internet-Draft MANET packet format June 2007
<tlv-semantics> is an 8 bit field specifying the interpretation of
the remainder of the TLV:
bit 0 (hassubtype): if cleared ('0'), then <tlv-subtype> is not
included in the <tlv>. If set ('1'), then <tlv-subtype> is
included in the <tlv>.
bit 1 (extended) and bit 2 (novalue): MUST NOT both be set ('1').
Otherwise, they are interpreted according to Table 2.
+----------+---------+--------------+--------------+
| extended | novalue | <length> | <value> |
+----------+---------+--------------+--------------+
| 0 | 0 | 8 bits | included |
| | | | |
| 0 | 1 | not included | not included |
| | | | |
| 1 | 0 | 16 bits | included |
+----------+---------+--------------+--------------+
Table 2
bit 3 (noindex) and bit 4 (singleindex): MUST NOT both be set
('1'). The former MUST be set ('1') and the latter MUST be
cleared ('0') for packet or message TLVs. They are interpreted
according to Table 3.
+---------+-------------+---------------+--------------+
| noindex | singleindex | <index-start> | <index-stop> |
+---------+-------------+---------------+--------------+
| 0 | 0 | included | included |
| | | | |
| 0 | 1 | included | not included |
| | | | |
| 1 | 0 | not included | not included |
+---------+-------------+---------------+--------------+
Table 3
bit 5 (multivalue): this bit serves to specify how the <value>
field is interpreted, as specified below. This bit MUST be
cleared ('0') for packet or message TLVs, if the singleindex
bit is set ('1'), or if the novalue bit is set ('1').
bits 6-7: are RESERVED and MUST each be cleared ('0') to be in
accordance with this version of the specification.
Clausen, et al. Expires December 31, 2007 [Page 14]
Internet-Draft MANET packet format June 2007
<tlv-subtype> is an 8 bit field, specifying the subtype of the TLV,
specific to the TLV type and kind (i.e. packet, message, or
address block TLV).
tlv-subtype is a variable, defined to equal <tlv-subtype> if
present, or 0 otherwise.
tlv-fulltype is a variable, defined by:
* tlv-fulltype = 256 * <tlv-type> + tlv-subtype;
<index-start> and <index-stop> when present are each an 8 bit field,
interpreted as follows.
index-start and index-stop are variables, defined according to
Table 4. The variable end-index is defined as follows:
* For message and packet TLVs:
+ end-index = 0
* For address block TLVs:
+ end-index = <num-addr> - 1
+---------+-------------+---------------+---------------+
| noindex | singleindex | index-start = | index-stop = |
+---------+-------------+---------------+---------------+
| 0 | 0 | <index-start> | <index-stop> |
| | | | |
| 0 | 1 | <index-start> | <index-start> |
| | | | |
| 1 | 0 | 0 | end-index |
+---------+-------------+---------------+---------------+
Table 4
For an address block TLV, the TLV applies to the addresses from
position index-start to position index-stop (inclusive) in the
address block, where the first address has position zero.
number-values is a variable, defined by:
* number-values = index-stop - index-start + 1
Clausen, et al. Expires December 31, 2007 [Page 15]
Internet-Draft MANET packet format June 2007
<length> is omitted or is a 8 or 16 bit field according to Table 2.
If present it MUST NOT be zero. If the multivalue bit is set
('1') then <length> MUST be an integral multiple of number-values,
and the variable single-length is defined by:
* single-length = <length> / number-values
If the multivalue bit is cleared ('0'), then the variable single-
length is defined by:
* single-length = <length>
<value> if present (see Table 2) is a field of length <length>
octets. In an address block TLV, <value> is associated with the
addresses from index-start to index-stop, inclusive. If the
multivalue bit is cleared ('0') then the whole of this field is
associated with each of the indicated addresses. If the
multivalue bit is set ('1') then this field is divided equally
into number-values fields, each of length single-length octets and
these are associated, in order, with the indicated addresses.
5.3.2. Constraints
TLVs in the same TLV block MUST be sorted in non-descending tlv-
fulltype order.
Packet and message TLVs MUST be defined so as to indicate whether two
TLVs with the same tlv-fulltype are, or are not, allowed in the same
packet or message TLV block, respectively.
Two or more TLVs with the same tlv-fulltype in the same address block
TLV block MUST NOT be associated with the same copy of an address
(i.e. they must not have overlapping index ranges).
TLVs with the same tlv-fulltype associated with the same address
block MUST be sorted in ascending index-start order.
5.4. Padding
Packet headers and messages MAY be padded to ensure 32 bit alignment
of each message contained within the packet and of the overall packet
length.
All elements are an integer multiple of octets, hence padding can be
accomplished by inserting an integer number of <pad-octet> elements
after the element that is to be 32 bit aligned.
The number of <pad-octet> elements required to achieve this 32 bit
Clausen, et al. Expires December 31, 2007 [Page 16]
Internet-Draft MANET packet format June 2007
alignment is the smallest number (0 to 3) that, when added to the
size of the preceding elements, produces an integer multiple of 4.
<pad-octet> is an 8 bit field with all bits cleared ('0').
There is no need to indicate if padding is included, since a <pad-
octet> will always precede either a message or the end of the packet.
In the former case, the start of a message is indicated by the next
non-zero octet parsed.
The padding after a message may be freely changed when a message is
forwarded without affecting the message.
Clausen, et al. Expires December 31, 2007 [Page 17]
Internet-Draft MANET packet format June 2007
6. TLV specification
This document specifies one address block TLV, which is included to
allow a standardized way of representing network addresses.
6.1. Address Block TLV Specification
+---------------+------+---------+--------+-------------------------+
| Name | Type | Subtype | Length | Value |
+---------------+------+---------+--------+-------------------------+
| PREFIX_LENGTH | 0 | 0 | 8 bits | Indicates that the |
| | | | | address is a network |
| | | | | address, rather than a |
| | | | | host address. The |
| | | | | value is the length of |
| | | | | the prefix/netmask, in |
| | | | | bits. |
+---------------+------+---------+--------+-------------------------+
Table 5
An address in an address block without an associated PREFIX_LENGTH
TLV may be considered to have a prefix length equal to the address
length in bits (i.e. 8 * address-length).
Clausen, et al. Expires December 31, 2007 [Page 18]
Internet-Draft MANET packet format June 2007
7. IANA Considerations
A new registry for message types must be created with initial
assignments as specified in Table 6. Future values in the range
5-127 can be allocated using standards action [3]. Additionally,
values in the range 128-255 are reserved for private/local use.
+------+------------------------+
| Type | Description |
+------+------------------------+
| 0 | MUST NOT be allocated. |
| | |
| 1-4 | RESERVED |
+------+------------------------+
Table 6
Message type 0 MUST NOT be allocated because a zero-octet signifies a
packet header and zero-octets are used for padding. Message types 1
to 4 are reserved because they are used by OLSR [4], which uses a
compatible packet/message header format.
A new registry for packet TLV types must be created, with no initial
assignments. Future values in the range 0-127 can be allocated using
standards action [3]. Additionally, values in the range 128-255 are
reserved for private/local use. If a packet TLV type is allocated
then a new registry for subtypes of that type must be created. A
document which defines a packet TLV type MUST also specify the
mechanism by which its subtypes are allocated, from among those in
[3].
A new registry for message TLV types must be created with no initial
assignments. Future values in the range 0-127 can be allocated using
standards action [3]. Additionally, values in the range 128-255 are
reserved for private/local use. If a message TLV type is allocated
then a new registry for subtypes of that type must be created. A
document which defines a message TLV type MUST also specify the
mechanism by which its subtypes are allocated, from among those in
[3].
A new registry for address block TLV types must be created with
initial assignments as specified in Table 7. Future values in the
range 1-127 can be allocated using standards action [3].
Additionally, values in the range 128-255 are reserved for private/
local use. If an address block TLV type is allocated then a new
registry for subtypes of that type must be created. A document which
defines an address block TLV type MUST also specify the mechanism by
which its subtypes are allocated, from among those in [3].
Clausen, et al. Expires December 31, 2007 [Page 19]
Internet-Draft MANET packet format June 2007
+---------------+------+---------+----------------------------------+
| Mnemonic | Type | Subtype | Description |
+---------------+------+---------+----------------------------------+
| PREFIX_LENGTH | 0 | 0 | Indicates that associated |
| | | | addresses are network addresses, |
| | | | with given prefix length, in |
| | | | bits. |
| | | | |
| | 0 | 1-255 | RESERVED |
+---------------+------+---------+----------------------------------+
Table 7
Subtypes indicated as RESERVED may be allocated by standards action,
as specified in [3].
Clausen, et al. Expires December 31, 2007 [Page 20]
Internet-Draft MANET packet format June 2007
8. Security Considerations
Messages are designed to be carriers of protocol information and MAY,
at each hop, be forwarded and/or processed according to the
information in the message header by the protocol using this
specification.
For forwarded messages where the message is unchanged by forwarding
nodes, then end-to-end security MAY be implemented, between nodes
with an existing security association, by including a suitable
message TLV containing a cryptographic signature in the message.
Since <hop-count> and <hop-limit> are the only fields that may be
modified when such a message is forwarded in this manner, this
signature can be calculated based on the entire message, including
the message header, with the <hop-count> and <hop-limit> fields set
to zero ('0') if present.
Packets are designed to carry a number of messages between
neighboring nodes in a single transmission and over a single logical
hop. Hop-by-hop packet level security MAY be implemented, between
nodes with an existing security association, by including a suitable
packet TLV containing a cryptographic signature to the packet. Since
packets are received as transmitted, this signature can be calculated
based on the entire packet, or on parts thereof as appropriate.
Clausen, et al. Expires December 31, 2007 [Page 21]
Internet-Draft MANET packet format June 2007
9. References
9.1. Normative References
[1] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", RFC 2119, BCP 14, March 1997.
[2] Hinden, R. and S. Deering, "IP Version 6 Addressing
Architecture", RFC 4291, February 2006.
[3] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA
Considerations Section in RFCs", October 1998.
9.2. Informative References
[4] Clausen, T. and P. Jacquet, "The Optimized Link State Routing
Protocol", RFC 3626, October 2003.
Clausen, et al. Expires December 31, 2007 [Page 22]
Internet-Draft MANET packet format June 2007
Appendix A. Examples
This appendix contains some examples of parts of this specification.
A.1. Address Block Examples
The following examples illustrate how some combinations of addresses
may be efficiently included in address blocks. These examples are
for IPv4, with address-length equal to 4. a, b, c etc. represent
distinct, non-zero, octet values.
Note that it is permissible to use a less efficient representation,
in particular one in which the nohead and notail bits of the
semantics octet are set, and hence head-length = 0, tail-length = 0,
mid-length = address-length, and the address block consists of the
number of addresses, the semantics octet with value 3, and a list of
the uncompressed addresses. This is also the most efficient way to
represent a single address, and the only way to represent, for
example, a.b.c.d and e.f.g.h in one address block.
Examples:
o To include a.b.c.d, a.b.e.f and a.b.g.h:
* head-length = 2;
* tail-length = 0;
* mid-length = 2;
* <semantics> has notail set (value 2);
* <tail-length> and <tail> are omitted.
The address block is then 3 2 2 a b c d e f g h (11 octets).
o To include a.b.c.g and d.e.f.g:
* head-length = 0;
* tail-length = 1;
* mid-length = 3;
* <semantics> has nohead set (value 1);
* <head-length> and <head> are omitted.
Clausen, et al. Expires December 31, 2007 [Page 23]
Internet-Draft MANET packet format June 2007
The address block is then 2 1 1 g a b c d e f (10 octets).
o To include a.b.d.e and a.c.d.e:
* head-length = 1;
* tail-length = 2;
* mid-length = 1;
* <semantics> = 0.
The address block is then 2 0 1 a 2 d e b c (9 octets).
o To include a.b.0.0, a.c.0.0, and a.d.0.0:
* head-length = 1;
* tail-length = 2;
* mid-length = 1;
* <semantics> has zerotail set (value 4);
* <tail> is omitted.
The address block is then 3 4 1 a 2 b c d (8 octets).
o To include a.b.0.0 and c.d.0.0:
* head-length = 0;
* tail-length = 2;
* mid-length = 2;
* <semantics> has nohead and zerotail set (value 5);
* <head> and <tail> are omitted.
The address block is then 2 5 2 a b c d (7 octets).
A.2. TLV Examples
If network addresses a.b.0.0/16, c.d.0.0/16, c.d.e.0/24 and
c.d.e.f/32 are to be represented using a single address block
containing a.b.0.0, c.d.0.0, c.d.e.0 and c.d.e.f, with the prefix
lengths added using one or more address block TLVs of type
Clausen, et al. Expires December 31, 2007 [Page 24]
Internet-Draft MANET packet format June 2007
PREFIX_LENGTH (0), then this can be done in a number of ways.
Possible examples are:
o Using one multivalue TLV covering all of the addresses:
* <semantics> has noindex and multivalue set (value 40);
* <index-start> and <index-stop> are omitted;
* <length> = 4 (single-length = 1).
* The TLV is then 0 40 4 16 16 24 32 (7 octets).
o Using one multivalue TLV omitting the last address (a prefix
length of 32 is the default):
* <semantics> has multivalue set (value 32);
* <index-start> = 0;
* <index-stop> = 2
* <length> = 3 (single-length = 1).
* The TLV is then 0 32 0 2 3 16 16 24 (8 octets).
o Using two single value TLVs, omitting the last address. First:
* <semantics> = 0;
* <index-start> = 0;
* <index-stop> = 1;
* <length> = 1;
* <value> = 16.
* The TLV is then 0 0 0 1 1 16 (6 octets).
Second:
* <semantics> has singlevalue set (value 16);
* <index-start> = 2;
* <index-stop> is omitted;
Clausen, et al. Expires December 31, 2007 [Page 25]
Internet-Draft MANET packet format June 2007
* <length> = 1;
* <value> = 24.
* The TLV is then 0 16 2 1 24 (5 octets).
Total length of TLVs is 11 octets.
In this case the first of these is the most efficient. In other
cases patterns such as the others may be preferred. Regardless of
efficiency, any of these may be used.
Assuming the definition of an address block TLV with type EXAMPLE
which has no value (it is sufficient to simply indicate which
addresses are examples), for the same address block, with the second
and third addresses being examples, this can be indicated with a
single TLV:
o <semantics> has novalue set (value 4);
o <index-start> = 1;
o <index-stop> = 2;
o <length> and <value> are omitted.
o The TLV is then EXAMPLE 4 1 2 (4 octets).
Assuming the definition of a message TLV with type DATA which can
take a value field of any length, for such a message TLV with 8
octets of data (a to h):
o <semantics> has noindex set (value 8);
o <index-start> and <index-stop> are omitted;
o <length> = 8.
o The TLV is then DATA 8 8 a b c d e f g h (11 octets).
If, in this example, the number of data octets were 256 or greater
then <semantics> would also have extended set and have value 10. The
length would require two octets (most significant first). The TLV
length would be 4 + N octets, where N is the number of data octets
(it can be 3 + N octets if N is 255 or less).
Clausen, et al. Expires December 31, 2007 [Page 26]
Internet-Draft MANET packet format June 2007
Appendix B. Illustrations
This informative appendix illustrates the elements, which are
normatively specified in Section 5 using regular expressions.
Bits labeled Reserved, Resv, or Rsv are cleared ('0'). Bits labeled
N and M may be cleared ('0') or set ('1'). Octets labeled Padding
are cleared ('0'), and are optional.
Appendix B.1. Packet
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0| Reserved |0|0| Packet Sequence Number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
: ... :
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0| Reserved |0|1| Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
: ... :
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 27]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0| Reserved |1|0| Packet Sequence Number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Packet TLV Block |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
: ... :
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0| Reserved |1|1| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Packet TLV Block |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
: ... :
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 28]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
: ... :
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message + Padding |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Appendix B.2. Message and Padding
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|0|0|0|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | Hop Count | Message Sequence Number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |0|0|0|0|1| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | Hop Count | Message Sequence Number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 29]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|0|0|1|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Count | Message Sequence Number | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |0|0|0|1|1| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Count | Message Sequence Number | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|0|1|0|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | Message Sequence Number | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 30]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|0|1|0|1| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | Message Sequence Number | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|0|1|1|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Sequence Number | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|0|1|1|1| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Sequence Number | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 31]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|1|0|0|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | Hop Count | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|1|0|0|1| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | Hop Count | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|1|0|1|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Count | |
+-+-+-+-+-+-+-+-+ |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 32]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|1|0|1|1| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Count | |
+-+-+-+-+-+-+-+-+ |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|1|1|0|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | |
+-+-+-+-+-+-+-+-+ |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|1|1|0|1| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | |
+-+-+-+-+-+-+-+-+ |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 33]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|1|1|1|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type | Rsv |N|1|1|1|0| Message Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message Body |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Padding |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 34]
Internet-Draft MANET packet format June 2007
Appendix B.3. Message Body
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Message TLV Block |
| +-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Address Block |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+ |
| Address TLV Block |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
: ... :
| |
| +-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Address Block |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Address TLV Block |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 35]
Internet-Draft MANET packet format June 2007
Appendix B.4. Address Block
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Number Addrs | Resv |0|0|0| Head Length | Head |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Head (cont) | Tail Length | Tail |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Mid | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
: ... :
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Number Addrs | Resv |0|0|1| Tail Length | Tail |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Tail (cont) | Mid | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
: ... :
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Number Addrs | Resv |0|1|0| Head Length | Head |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Head (cont) | Mid | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
: ... :
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 36]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Number Addrs | Resv |0|1|1| Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Mid (cont) | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
: ... :
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Mid (cont) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Number Addrs | Resv |1|0|0| Head Length | Head |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Head (cont) | Tail Length | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
: ... :
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Number Addrs | Resv |1|0|1| Tail Length | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Mid (cont) | |
+-+-+-+-+-+-+-+-+ |
| |
: ... :
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 37]
Internet-Draft MANET packet format June 2007
Appendix B.5. TLV Block
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| TLV |
| +-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
: ... :
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| TLV |
| +-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Appendix B.6. TLV
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|M|0|0|0|0|0| Index Start | Index Stop |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | |
+-+-+-+-+-+-+-+-+ |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 38]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|M|0|0|0|0|1| Subtype | Index Start |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Index Stop | Length | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|M|0|0|0|1|0| Index Start | Index Stop |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|M|0|0|0|1|1| Subtype | Index Start |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Index Stop | Length | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 39]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|0|0|1|0|0| Index Start | Index Stop |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|0|0|1|0|1| Subtype | Index Start |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Index Stop |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|M|0|1|0|0|0| Length | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|M|0|1|0|0|1| Subtype | Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 40]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|M|0|1|0|1|0| Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|M|0|1|0|1|1| Subtype | Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length (cont) | |
+-+-+-+-+-+-+-+-+ |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|0|1|1|0|0|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|0|1|1|0|1| Subtype |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 41]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|1|0|0|0|0| Index Start | Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|1|0|0|0|1| Subtype | Index Start |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | |
+-+-+-+-+-+-+-+-+ |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|1|0|0|1|0| Index Start | Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length (cont) | |
+-+-+-+-+-+-+-+-+ |
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 42]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|1|0|0|1|1| Subtype | Index Start |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |
| Value |
| |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|1|0|1|0|0| Index Start |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type |Rsv|0|1|0|1|0|1| Subtype | Index Start |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 43]
Internet-Draft MANET packet format June 2007
Appendix C. Complete Example
An example packet, using IPv4 addresses (length four octets) is
shown. This packet has a header, indicated by the initial octet 0.
The packet header has semantics octet 0, and hence has a packet
sequence number, but no packet TLV block.
The packet contains a single message. This message has semantics
octet 0, and hence has a complete message header, including
originator address, hop limit, hop count and message sequence number
(which is type independent). The message has a message TLV block
with content length 9 octets, containing a single TLV. This TLV has
the noindex bit of its semantics octet 8 set, and has value length 6
octets. The message then has two address blocks each with a
following TLV block.
The first address block contains 3 addresses. It has the notail bit
of its semantics octet 2 set, and has head length 2 octets, hence mid
length two octets. It is followed by a TLV block, with content
length 9 octets, containing two TLVs. The first of these TLVs has
the noindex bit of its semantics octet 8 set, and has a single value
of length 2 octets, which applies to all of the addresses in the
address block. The second of these TLVs has the novalue bit of its
semantics octet 4 set, and hence has no length or value fields. It
does have index fields, which indicate those addresses this TLV
applies to.
The second address block contains 2 addresses. It has the nohead and
zerotail bits of its semantics octet 5 set, and has tail length 2
octets, hence mid length two octets. The two tail octets of each
address are zero. It is followed by a TLV block with content length
5 octets. This TLV block contains a single TLV of type PREFIX_LENGTH
that has the multivalue and noindex bits of its semantics octet 40
set, and a value field length of 2 octets, indicating two values each
of one octet length. There is one final padding octet 0 that is not
included in the message length of 59 octets.
Clausen, et al. Expires December 31, 2007 [Page 44]
Internet-Draft MANET packet format June 2007
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0|0 0 0 0 0 0 0 0| Packet Sequence Number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Message Type |0 0 0 0 0 0 0 0|0 0 0 0 0 0 0 0 0 0 1 1 1 0 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Originator Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Hop Limit | Hop Count | Message Sequence Number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1| TLV Type |0 0 0 0 1 0 0 0|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 1 1 0| Value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Value (cont) |0 0 0 0 0 0 1 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 1 0|0 0 0 0 0 0 1 0| Head |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Mid | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Mid |0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| TLV Type |0 0 0 0 1 0 0 0|0 0 0 0 0 0 1 0| Value |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Value (cont) | TLV Type |0 0 0 0 0 1 0 0| Index Start |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Index Stop |0 0 0 0 0 0 1 0|0 0 0 0 0 1 0 1|0 0 0 0 0 0 1 0|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Mid | Mid |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1| PREFIX_LENGTH |0 0 1 0 1 0 0 0|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 0 1 0| Value0 | Value1 |0 0 0 0 0 0 0 0|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Clausen, et al. Expires December 31, 2007 [Page 45]
Internet-Draft MANET packet format June 2007
Appendix D. Contributors
This specification is the result of the joint efforts of the
following contributors from the OLSRv2 Design Team -- listed
alphabetically.
o Cedric Adjih, INRIA, France, <Cedric.Adjih@inria.fr>
o Emmanuel Baccelli, Hitachi Labs Europe, France,
<Emmanuel.Baccelli@inria.fr>
o Thomas Heide Clausen, LIX, Ecole Polytechnique, France,
<T.Clausen@computer.org>
o Justin W. Dean, NRL, USA<jdean@itd.nrl.navy.mil>
o Christopher Dearlove, BAE Systems, UK,
<chris.dearlove@baesystems.com>
o Satoh Hiroki, Hitachi SDL, Japan, <h-satoh@sdl.hitachi.co.jp>
o Philippe Jacquet, INRIA, France, <Philippe.Jacquet@inria.fr>
o Monden Kazuya, Hitachi SDL, Japan, <monden@sdl.hitachi.co.jp>
Clausen, et al. Expires December 31, 2007 [Page 46]
Internet-Draft MANET packet format June 2007
Appendix E. Acknowledgements
The authors would like to acknowledge the team behind OLSRv1, as
specified in RFC 3626, including Anis Laouiti, Pascale Minet, Laurent
Viennot (all at INRIA, France), and Amir Qayyum (Center for Advanced
Research in Engineering, Pakistan) for their contributions.
The authors would like to gratefully acknowledge the following people
for intense technical discussions, early reviews and comments on the
specification and its components: Joe Macker (NRL), Alan Cullen (BAE
Systems), Ian Chakeres (Boeing), Charlie E. Perkins (Nokia), Andreas
Schjonhaug (LIX), Florent Brunneau (LIX), Yasunori Owada (Niigata
University) and the entire IETF MANET working group.
Clausen, et al. Expires December 31, 2007 [Page 47]
Internet-Draft MANET packet format June 2007
Authors' Addresses
Thomas Heide Clausen
LIX, Ecole Polytechnique, France
Phone: +33 6 6058 9349
Email: T.Clausen@computer.org
URI: http://www.thomasclausen.org/
Christopher M. Dearlove
BAE Systems Advanced Technology Centre
Phone: +44 1245 242194
Email: chris.dearlove@baesystems.com
URI: http://www.baesystems.com/
Justin W. Dean
Naval Research Laboratory
Phone: +1 202 767 3397
Email: jdean@itd.nrl.navy.mil
URI: http://pf.itd.nrl.navy.mil/
Cedric Adjih
INRIA Rocquencourt
Phone: +33 1 3963 5215
Email: Cedric.Adjih@inria.fr
URI: http://menetou.inria.fr/~adjih/
Clausen, et al. Expires December 31, 2007 [Page 48]
Internet-Draft MANET packet format June 2007
Full Copyright Statement
Copyright (C) The IETF Trust (2007).
This document is subject to the rights, licenses and restrictions
contained in BCP 78, and except as set forth therein, the authors
retain all their rights.
This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND
THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF
THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Intellectual Property
The IETF takes no position regarding the validity or scope of any
Intellectual Property Rights or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; nor does it represent that it has
made any independent effort to identify any such rights. Information
on the procedures with respect to rights in RFC documents can be
found in BCP 78 and BCP 79.
Copies of IPR disclosures made to the IETF Secretariat and any
assurances of licenses to be made available, or the result of an
attempt made to obtain a general license or permission for the use of
such proprietary rights by implementers or users of this
specification can be obtained from the IETF on-line IPR repository at
http://www.ietf.org/ipr.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights that may cover technology that may be required to implement
this standard. Please address the information to the IETF at
ietf-ipr@ietf.org.
Acknowledgment
Funding for the RFC Editor function is provided by the IETF
Administrative Support Activity (IASA).
Clausen, et al. Expires December 31, 2007 [Page 49]
Html markup produced by rfcmarkup 1.129c, available from
https://tools.ietf.org/tools/rfcmarkup/