Network Working Group G. Tsirtsis Internet-Draft G. Giarreta Intended status: Standards Track Qualcomm Expires: January 30, 2010 H. Soliman Elevate Technologies N. Montavont IT/TB July 29, 2009 Binary Traffic Selectors for FB draft-ietf-mext-binary-ts-00.txt Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and 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 January 30, 2010. Copyright Notice Copyright (c) 2009 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 in effect on the date of publication of this document (http://trustee.ietf.org/license-info). Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Tsirtsis, et al. Expires January 30, 2010 [Page 1] Internet-Draft Binary Traffic Selectors for FB July 2009 Abstract This document defines binary format for IPv4 and IPv6 traffic selectors to be used in conjuction with flow bindings for Mobile IPv6. Table of Contents 1. Requirements notation . . . . . . . . . . . . . . . . . . . . 3 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. Traffic Selector Sub-Options . . . . . . . . . . . . . . . . . 5 3.1. IPv4 binary traffic selector . . . . . . . . . . . . . . . 5 3.2. IPv6 binary traffic selector . . . . . . . . . . . . . . . 7 4. Flow Identification Status codes . . . . . . . . . . . . . . . 11 5. Security Considerations . . . . . . . . . . . . . . . . . . . 12 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 13 7. Aknowledgements . . . . . . . . . . . . . . . . . . . . . . . 14 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8.1. Normative References . . . . . . . . . . . . . . . . . . . 15 8.2. Informative References . . . . . . . . . . . . . . . . . . 15 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 16 Tsirtsis, et al. Expires January 30, 2010 [Page 2] Internet-Draft Binary Traffic Selectors for FB July 2009 1. Requirements notation 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 [RFC2119]. Tsirtsis, et al. Expires January 30, 2010 [Page 3] Internet-Draft Binary Traffic Selectors for FB July 2009 2. Introduction This document defines binary formats for IPv4 and IPv6 Traffic Selector sub-options as defined in [I-D.ietf-mext-flow-binding]. The binary traffic selector sub-options defined here, allow efficient identification of flow(s) based on well known fields in IPv4, IPv6, and transport layer headers. Tsirtsis, et al. Expires January 30, 2010 [Page 4] Internet-Draft Binary Traffic Selectors for FB July 2009 3. Traffic Selector Sub-Options [I-D.ietf-mext-flow-binding] defines the format for the traffic selector sub-option. The following values of the sub-option Type field, are reserved in this specification for binary traffic selectors TBD IPv4 binary traffic selector TBD IPv6 binary traffic selector 3.1. IPv4 binary traffic selector If the Type field of the traffic selector sub-option indicates "IPv4 binary traffic selector", then the traffic selector is formatted as follows: 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 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |A|B|C|D|E|F|G|H|I|K|L| Resvd | (A)DS | (B)Protocol | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (C)Source Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (D)Destination Address | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |(E)S. PrefLeng |(F)D. PrefLeng | (G)Source port - Low | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (H)Source port - High | (I)Dst port - Low | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (K)Dst port - High | (L)SPI | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (L)SPI | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 1: IPv4 binary traffic selector Flags (A-L) Each flag indicates whether the corresponding field is present in the message (A)DS - Differential Services The Differential Services (DS) field in the data packet as seen by the home agent. Note that this is called Type of Service field in [RFC0791]. [RFC3260] then clarified that the field has been Tsirtsis, et al. Expires January 30, 2010 [Page 5] Internet-Draft Binary Traffic Selectors for FB July 2009 redefined as 6 bits DS field and 2 bits reserved, later claimed by Explicit Congestion Notification (ECN) [RFC3168]. For the purpose of this specification the DS field is 8bit long, were the 6 most significant bits indicating the DS field to be matched and the 2 list significant bits MUST be set to 0 by the sender and ignored by the receiver. (B)Protocol An 8-bit unsigned integer representing the value of the transport protocol number associated with the port numbers in data packets. (C)Source Address This field identifies the source address of data packets as seen by the home agent that is, the 32-bit IPv4 address of the correspondent node. (D)Destination Address This field identifies the destination address of data packets as seen by the home agent. When included this field must one of the registered home addresses of the mobile node. It is a 32-bit IPv4 address. (E)Source Prefix Length This field includes the prefix length for the source address. This field can only be included if the Source Address field is included. When this field is included the receiver will match all of the addresses in the subnet identified by this field. (F)Destination Prefix Length This field includes the prefix length for the destination address. If The Destination Address field is included then it refers to that field. When this field is included the receiver will match all of the addresses in the subnet identified by this field. (G)Source Port - Low This field identifies the lowest source port number within a range of port numbers that will be used in data packets, as seen by the home agent. (H)Source Port - High Tsirtsis, et al. Expires January 30, 2010 [Page 6] Internet-Draft Binary Traffic Selectors for FB July 2009 This field identifies the highest source port number within a range of port numbers that will be used in data packets, as seen by the home agent. This field MUST NOT be included if the Source Port - Low field is not includede. If a single port is indicated then this field MUST NOT be included. When it is included it MUST be set to the value larger than that of Source Port - Low field. (I)Destination Port - Low This field identifies the lowest destination port number within a range of port numbers that will be used in data packets as seen by the home agent. (K)Destination Port - High This field identifies the highest destination port number within a range of port numbers that will be used in data packets, as seen by the home agent. This field MUST NOT be included if the Destination Port - Low field is not includede. If a single port is indicated then this field MUST NOT be included. When it is included it MUST be set to the value larger than that of Destination Port - Low field. (L)SPI - Security Parameter Index The SPI field in the data packet as seen by the home agent. Resved Reserved for future use. These bits MUST be set to zero by the sender and ignored by the receiver. 3.2. IPv6 binary traffic selector If the Type field of the traffic selector sub-option indicates "IPv6 binary traffic selector", then the traffic selector is formatted as follows: Tsirtsis, et al. Expires January 30, 2010 [Page 7] Internet-Draft Binary Traffic Selectors for FB July 2009 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 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |A|B|C|D|E|F|G|H|I|K|L|M| Resvd | (A)DS | (B)Protocol | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | + + | | + (C)Source Address + | | + + | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | + + | | + (D)Destination Address + | | + + | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |(E)S. PrefLeng |(F)D. PrefLeng | (G)Source port - Low | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (H)Source port - High | (I)Dst port - Low | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (K)Dst port - High | (L)SPI | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (L)SPI | (M)Flow Label | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | (M)Flow Label | +-+-+-+-+-+-+-+-+ Figure 2: IPv6 binary traffic selector Flags (A-M) Each flag indicates whether the corresponding field is present in the message (A) DS - Differential Services The Differential Services (DS) field in the data packet as seen by the home agent. Note that this is called Traffic Class field in [RFC2460]. [RFC3260] then clarified that the field has been redefined as 6 bits DS field and 2 bits reserved, later claimed by Explicit Congestion Notification (ECN) in [RFC3168]. For the purpose of this specification the DS field is 8bit long, were the 6 most significant bits indicating the DS field to be matched and Tsirtsis, et al. Expires January 30, 2010 [Page 8] Internet-Draft Binary Traffic Selectors for FB July 2009 the 2 list significant bits MUST be set to 0 by the sender and ignored by the receiver. (B)Protocol An 8-bit unsigned integer representing value of the transport protocol number associated with the port numbers in data packets. (C)Source Address This field identifies the source address of data packets as seen by the home agent. That is, the address of the correspondent node and it is a 128-bit IPv6 address. (D)Destination Address This field identifies the destination address of the data packet as seen by the home agent. When included this field must be set to either one of the registered home addresses of the mobile node or to an address that falls under one of the mobile's home network prefixes. The value of this fild is 128-bit IPv6 address. (E)Source Prefix Length This field includes the prefix for the source address. This field MUST NOT be included if the Source Address field is not included. When this field is included the receiver will match all of the addresses in the subnet identified by this field. (F)Destination Prefix Length This field includes the prefix for the destination address. This field MUST NOT be included if the Source Address field is not included. When this field is included the receiver will match all of the addresses in the subnet identified by this field. (G)Source Port - Low This field identifies the lowest source port number within a range of port numbers that will be used in data packets, as seen by the home agent. (H)Source Port - High This field identifies the highest source port number within a range of port numbers that will be used in data packets, as seen by the home agent. This field MUST NOT be included if the Source Port - Low field is not includede. If a single port is indicated Tsirtsis, et al. Expires January 30, 2010 [Page 9] Internet-Draft Binary Traffic Selectors for FB July 2009 then this field MUST NOT be included. When it is included it MUST be set to the value larger than that of Source Port - Low field. (I)Destination Port - Low This field identifies the lowest destination port number within a range of port numbers that will be used in data packets as seen by the home agent. (K)Destination Port - High This field identifies the highest destination port number within a range of port numbers that will be used in data packets, as seen by the home agent. This field MUST NOT be included if the Destination Port - Low field is not includede. If a single port is indicated then this field MUST NOT be included. When it is included it MUST be set to the value larger than that of Destination Port - Low field. (L)SPI - Security Parameter Index The SPI field in the data packet as seen by the home agent. (M)Flow Label The Flow Label field in the data packet as seen by the home agent. Resved Reserved for future use. Tsirtsis, et al. Expires January 30, 2010 [Page 10] Internet-Draft Binary Traffic Selectors for FB July 2009 4. Flow Identification Status codes TBD Tsirtsis, et al. Expires January 30, 2010 [Page 11] Internet-Draft Binary Traffic Selectors for FB July 2009 5. Security Considerations This draft defines the format of traffic selector sub-options defined in the flow bindings [I-D.ietf-mext-flow-binding]. The authors have not identified any security concenrs pertaining to this draft beyond what is already identified in [I-D.ietf-mext-flow-binding]. Tsirtsis, et al. Expires January 30, 2010 [Page 12] Internet-Draft Binary Traffic Selectors for FB July 2009 6. IANA Considerations TBD Tsirtsis, et al. Expires January 30, 2010 [Page 13] Internet-Draft Binary Traffic Selectors for FB July 2009 7. Aknowledgements TBD Tsirtsis, et al. Expires January 30, 2010 [Page 14] Internet-Draft Binary Traffic Selectors for FB July 2009 8. References 8.1. Normative References [I-D.ietf-mext-flow-binding] Soliman, H., Montavont, N., and K. Kuladinithi, "Flow Bindings in Mobile IPv6 and NEMO Basic Support", draft-ietf-mext-flow-binding-03 (work in progress), July 2009. [RFC0791] Postel, J., "Internet Protocol", STD 5, RFC 791, September 1981. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2460] Deering, S. and R. Hinden, "Internet Protocol, Version 6 (IPv6) Specification", RFC 2460, December 1998. [RFC3168] Ramakrishnan, K., Floyd, S., and D. Black, "The Addition of Explicit Congestion Notification (ECN) to IP", RFC 3168, September 2001. 8.2. Informative References [RFC3260] Grossman, D., "New Terminology and Clarifications for Diffserv", RFC 3260, April 2002. Tsirtsis, et al. Expires January 30, 2010 [Page 15] Internet-Draft Binary Traffic Selectors for FB July 2009 Authors' Addresses George Tsirtsis Qualcomm Email: tsirtsis@gmail.com Gerardo Giarreta Qualcomm Email: gerardog@qualcomm.com Hesham Soliman Elevate Technologies Email: hesham@elevatemobile.com Nicolas Montavont Institut Telecom / Telecom Bretagne 2, rue de la chataigneraie Cesson Sevigne 35576 France Phone: (+33) 2 99 12 70 23 Email: nicolas.montavont@telecom-bretagne.eu URI: http://www.rennes.enst-bretagne.fr/~nmontavo// Tsirtsis, et al. Expires January 30, 2010 [Page 16]