FYI. Regards, Thomas ---------- Forwarded message ---------- Date: Fri, 08 May 1998 10:17:55 -0700 From: "by way of Bob Hinden <hinden@iprg.nokia.com>" <Internet-Drafts@ietf.org> To: ipng@sunroof.Eng.Sun.COM Subject: (IPng 5789) I-D ACTION:draft-ietf-diffserv-headers-00.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Differentiated Services Working Group of the IETF. Title : Definition of the Differentiated Services Field (DS Byte) in the IPv4 and IPv6 Headers Author(s) : K. Nichols, S. Blake Filename : draft-ietf-diffserv-headers-00.txt Pages : 11 Date : 07-May-98 Differentiated services are intended to provide scalable service discrimination in the Internet without the need for per-flow state and signaling at every hop. A variety of services may be built from a small, well-defined set of building blocks which are deployed in network nodes. The services may be either end-to-end or intra- domain. Services can be provided by a combination of: - setting bits in an IP header field at network edges and administrative boundaries, - using those bits to determine how packets are forwarded by the routers inside the network, and - conditioning the marked packets at network boundaries in accordance with the requirements or rules of each service. This document defines the IP header field, called the DS (for differentiated services) byte. In IPv4, it takes the place of the TOS octet; in IPv6, it takes the place of the Traffic Class octet. A differentiated services-capable network node includes a classifier that selects packets based on the value of the DS byte and is capable of delivering the specific packet forwarding treatment corresponding to that value. This document defines two packet forwarding treatments, or per-hop behaviors. Setting of the DS byte and other conditioning of the dynamic behavior of marked packets need only be performed at network boundaries and may vary in complexity. For a more complete understanding of differentiated services, this document should be read along with its companion documents, the differentiated services architecture [ARCH], the differentiated services framework [FWK], and other documents which specify additional per-hop behaviors, such as [Baker]. Internet-Drafts are available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-diffserv-headers-00.txt". A URL for the Internet-Draft is: ftp://ftp.ietf.org/internet-drafts/draft-ietf-diffserv-headers-00.txt Internet-Drafts directories are located at: Africa: ftp.is.co.za Europe: ftp.nordu.net ftp.nis.garr.it Pacific Rim: munnari.oz.au US East Coast: ftp.ietf.org US West Coast: ftp.isi.edu Internet-Drafts are also available by mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-diffserv-headers-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. Content-Type: text/plain Content-ID: <19980508125124.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-diffserv-headers-00.txt <ftp://ftp.ietf.org/internet-drafts/draft-ietf-diffserv-headers-00.txt> -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to majordomo@sunroof.eng.sun.com --------------------------------------------------------------------