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Network Working Group                                          B. WijnenRequest for Comments: 3595                           Lucent TechnologiesCategory: Standards Track                                 September 2003Textual Conventions for IPv6 Flow LabelStatus 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.Copyright Notice   Copyright (C) The Internet Society (2003).  All Rights Reserved.Abstract   This MIB module defines textual conventions to represent the commonly   used IPv6 Flow Label.  The intent is that these textual conventions   (TCs) will be imported and used in MIB modules that would otherwise   define their own representations.Table of Contents1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .22.  The Internet-Standard Management Framework . . . . . . . . . .23.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .24.  Security Considerations  . . . . . . . . . . . . . . . . . . .45.  Intellectual Property Statement. . . . . . . . . . . . . . . .46.  References . . . . . . . . . . . . . . . . . . . . . . . . . .46.1.  Normative References . . . . . . . . . . . . . . . . . .46.2.  Informative References . . . . . . . . . . . . . . . . .57.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . .58.  Author's Address . . . . . . . . . . . . . . . . . . . . . . .59.  Full Copyright Statement . . . . . . . . . . . . . . . . . . .6Wijnen                      Standards Track                     [Page 1]

RFC 3595        Textual Conventions for IPv6 Flow Label   September 20031.  Introduction   Several standards-track MIB modules have defined objects to represent   an IPv6 Flow Label (sometimes referred to as Flow ID) [RFC2460]   [FLOWLABEL] and IPv6 Flow Label filters.  Unfortunately the result is   a set of different definitions for the same piece of management   information.  This may lead to confusion and unnecessary complexity.   This document defines a set of textual conventions (TCs) that can and   should be (re-)used in MIB modules, so that they all represent an   IPv6 Flow Label in the same way.  In fact, PIB modules can and should   also use these TCs when they need to represent an IPv6 Flow label.2.  The Internet-Standard Management Framework   For a detailed overview of the documents that describe the current   Internet-Standard Management Framework, please refer tosection 7 of   RFC 3410 [RFC3410].   Managed objects are accessed via a virtual information store, termed   the Management Information Base or MIB.  MIB objects are generally   accessed through the Simple Network Management Protocol (SNMP).   Objects in the MIB are defined using the mechanisms defined in the   Structure of Management Information (SMI).  This memo specifies a MIB   module that is compliant to the SMIv2, which is described in STD 58,RFC 2578 [RFC2578], STD 58,RFC 2579 [RFC2579] and STD 58,RFC 2580   [RFC2580].3.  Definitions   IPV6-FLOW-LABEL-MIB DEFINITIONS ::= BEGIN   IMPORTS       MODULE-IDENTITY, mib-2, Integer32           FROM SNMPv2-SMI       TEXTUAL-CONVENTION                          FROM SNMPv2-TC;   ipv6FlowLabelMIB   MODULE-IDENTITY       LAST-UPDATED  "200308280000Z"  -- 28 August 2003       ORGANIZATION  "IETF Operations and Management Area"       CONTACT-INFO  "Bert Wijnen (Editor)                      Lucent Technologies                      Schagen 33                      3461 GL Linschoten                      NetherlandsWijnen                      Standards Track                     [Page 2]

RFC 3595        Textual Conventions for IPv6 Flow Label   September 2003                      Phone: +31 348-407-775                      EMail: bwijnen@lucent.com                      Send comments to <mibs@ops.ietf.org>.                     "       DESCRIPTION   "This MIB module provides commonly used textual                      conventions for IPv6 Flow Labels.                      Copyright (C) The Internet Society (2003).  This                      version of this MIB module is part ofRFC 3595,                      see the RFC itself for full legal notices.                     "       -- Revision History       REVISION      "200308280000Z"  -- 28 August 2003       DESCRIPTION   "Initial version, published asRFC 3595."       ::= { mib-2 103 }   IPv6FlowLabel      ::= TEXTUAL-CONVENTION       DISPLAY-HINT  "d"       STATUS         current       DESCRIPTION   "The flow identifier or Flow Label in an IPv6                      packet header that may be used to discriminate                      traffic flows.                     "       REFERENCE     "Internet Protocol, Version 6 (IPv6) specification,section 6.RFC 2460.                     "       SYNTAX         Integer32 (0..1048575)   IPv6FlowLabelOrAny ::= TEXTUAL-CONVENTION       DISPLAY-HINT  "d"       STATUS         current       DESCRIPTION   "The flow identifier or Flow Label in an IPv6                      packet header that may be used to discriminate                      traffic flows.  The value of -1 is used to                      indicate a wildcard, i.e. any value.                     "       SYNTAX         Integer32 (-1 | 0..1048575)   ENDWijnen                      Standards Track                     [Page 3]

RFC 3595        Textual Conventions for IPv6 Flow Label   September 20034.  Security Considerations   The MIB module contained in this memo does not define any management   objects.  Instead, it defines a set of textual conventions which may   be used by other MIB modules to define management objects.   Meaningful security considerations can only be written for MIB   modules that define concrete management objects.  This document has   therefore no impact on the security of the Internet.5.  Intellectual Property Statement   The IETF takes no position regarding the validity or scope of any   intellectual property 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; neither does it represent that it   has made any effort to identify any such rights.  Information on the   IETF's procedures with respect to rights in standards-track and   standards-related documentation can be found inBCP-11.  Copies of   claims of rights made available for publication 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 implementors or users of this specification can   be obtained from the IETF Secretariat.   The IETF invites any interested party to bring to its attention any   copyrights, patents or patent applications, or other proprietary   rights which may cover technology that may be required to practice   this standard.  Please address the information to the IETF Executive   Director.6.  References6.1.  Normative References   [RFC2460]   Deering, S. and R. Hinden, "Internet Protocol, Version 6               (IPv6) Specification",RFC 2460, December 1998.   [RFC2578]   McCloghrie, K., Perkins, D. and Schoenwaelder, "Structure               of Management Information Version 2 (SMIv2)", STD 58,RFC2578, April 1999.   [RFC2579]   McCloghrie, K., Perkins, D. and J. Schoenwaelder,"Textual               Conventions for SMIv2", STD 58,RFC 2579, April 1999.Wijnen                      Standards Track                     [Page 4]

RFC 3595        Textual Conventions for IPv6 Flow Label   September 2003   [RFC2580]   McCloghrie, K., Perkins, D. and J. Schoenwaelder,               "Conformance Statements for SMIv2", STD 58,RFC 2580,               April 1999.6.2.  Informative References   [FLOWLABEL] Carpenter, B., Conta, A., Deering, S. and J. Rajahalme,               "IPv6 Flow Label Specification", Work in Progress.   [RFC3410]   Case, J., Mundy, R., Partain, D. and B. Stewart,               "Introduction and Applicability Statements for Internet-               Standard Management Framework",RFC 3410, December 2002.7.  Acknowledgments   This document was produced as a result of a review of the use of   FlowID in a PIB module and a MIB module.  Further investigation found   that FlowID and FlowLabel objects were defined in a few other MIB   modules.  The editor would like to thank all who contributed to the   discussion that resulted in this document, particularly Juergen   Schoenwaelder for finding and reporting most of the other MIB modules   that were using/defining a FlowLabel object.  Juergen also suggested   the very first direction for a common TC for these objects.  Further   contributions were received from Fred Baker, Dan Romascanu, Kwok Ho   Chan, Margaret Wasserman, Brian Carpenter, Andy Bierman, Randy   Presuhn, Branislav Meandzija, Brian Williams, Ravi Sahita.  We also   received initial input from 3GPP that expressed the requirement to be   able to specify a wildcard for FlowID or FlowLabel.  Further helpful   review comments were received from Brian Carpenter, John Loughney,   Pekka Savola.8.  Author's Address   Bert Wijnen   Lucent Technologies   Schagen 33   3461 GL Linschoten   Netherlands   Phone: +31-348-407-775   EMail: bwijnen@lucent.comWijnen                      Standards Track                     [Page 5]

RFC 3595        Textual Conventions for IPv6 Flow Label   September 20039.  Full Copyright Statement   Copyright (C) The Internet Society (2003).  All Rights Reserved.   This document and translations of it may be copied and furnished to   others, and derivative works that comment on or otherwise explain it   or assist in its implementation may be prepared, copied, published   and distributed, in whole or in part, without restriction of any   kind, provided that the above copyright notice and this paragraph are   included on all such copies and derivative works.  However, this   document itself may not be modified in any way, such as by removing   the copyright notice or references to the Internet Society or other   Internet organizations, except as needed for the purpose of   developing Internet standards in which case the procedures for   copyrights defined in the Internet Standards process must be   followed, or as required to translate it into languages other than   English.   The limited permissions granted above are perpetual and will not be   revoked by the Internet Society or its successors or assignees.   This document and the information contained herein is provided on an   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING   TASK FORCE DISCLAIMS 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.Acknowledgement   Funding for the RFC Editor function is currently provided by the   Internet Society.Wijnen                      Standards Track                     [Page 6]