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IPv4 Option for Sender Directed Multi-Destination Delivery (RFC1770)

IP.com Disclosure Number: IPCOM000004022D
Original Publication Date: 1995-Mar-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 5 page(s) / 11K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C. Graff: AUTHOR

Abstract

This memo defines an IPv4 option to provide a sender directed multi- destination delivery mechanism called Selective Directed Broadcast Mode (SDBM). The SDBM provides unreliable UDP delivery to a set of IP addresses included in the option field of an IPv4 datagram. Data reliability if required will be provided by the application layer. This approach was developed to support sender directed multi- destination delivery to sparsely populated groups with no additional control traffic. This approach will find application in the extremely bandwidth constrained tactical military environment, as well as in some commercial applications requiring sender control of data delivery.

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Network Working Group C. Graff

Request for Comments: 1770 US Army CECOM

Category: Informational March 1995

IPv4 Option for Sender Directed Multi-Destination Delivery

Status of this Memo

This memo provides information for the Internet community. This memo

does not specify an Internet standard of any kind. Distribution of

this memo is unlimited.

Abstract

This memo defines an IPv4 option to provide a sender directed multi-

destination delivery mechanism called Selective Directed Broadcast

Mode (SDBM). The SDBM provides unreliable UDP delivery to a set of

IP addresses included in the option field of an IPv4 datagram. Data

reliability if required will be provided by the application layer.

This approach was developed to support sender directed multi-

destination delivery to sparsely populated groups with no additional

control traffic. This approach will find application in the

extremely bandwidth constrained tactical military environment, as

well as in some commercial applications requiring sender control of

data delivery.

Background

The Selective Directed Broadcast Mode (SDBM) is an integral part of

the U.S. Army standard for tactical data communication networks as

defined in MIL-STD-188-220() (Reference 1). The MIL-STD-188-220()

defines a protocol architecture for the lower four layers of the

ISO-OSI Reference model. The MIL-STD-188-220() is currently

undergoing a reformatting to be consistent with other DoD standards

that deal with IP networking. These efforts will provide tactical IP

internetting of tactical Army broadcast radio networks, and will

support fully IP compliant internetworking to other types of IP

networks via commercial IP routers. It is the goal of the U.S. Army

to move toward a fully IP compliant internetwork architecture for all

tactical battlefield data communications. The Army does, however,

have a critical need for a reliable, sender directed multi-

destination data transfer capability that is not currently supported

by the existing or emerging internet standards. The SDBM IP option

was developed to meet this need. The required data reliability will

be provided by incorporating an acknowledgement strategy at the

application layer. It is hoped that this IP option, providing multi-

destination capability not currently provided by the current and

emerging internet standards, will be embraced by the internet

community and become an integal part of the IP family of protocols

and be incorporated in commercial IP software products.

SDBM Format

The SDBM provides the ability for an application to explicitly list a

set of intended IP destinations. This capability will be implemented

as an option in the IP layer, as shown in Figure 1. This option field

is variable in length, up to a maximum of 40 octets due to the

limitation of the HLEN field ...