Pseudowire Edge-to-Edge Emulation T. Nadeau, Ed. Internet-Draft BT Intended status: Standards Track D. Zelig, Ed. Expires: August 15, 2009 Oversi O. Nicklass, Ed. RADVISION February 15, 2009 Definitions of Textual Conventions for Pseudowires (PW) Management draft-ietf-pwe3-pw-tc-mib-15 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 August 15, 2009. 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 (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Nadeau, et al. Expires August 2009 [Page 1] draft-ietf-pwe3-pw-tc-mib-15 February 2009 This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Abstract This memo defines a Management Information Base (MIB) module which contains Textual Conventions (TCs) to represent commonly-used Pseudowire (PW) management information. The intent is that these TCs will be imported and used in PW-related MIB modules that would otherwise define their own representations. Conventions used in this document 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]. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. The Internet-Standard Management Framework . . . . . . . . . . 3 3. Object Definitions . . . . . . . . . . . . . . . . . . . . . . 3 4. Security Considerations . . . . . . . . . . . . . . . . . . . 9 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9 6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6.1. Normative References . . . . . . . . . . . . . . . . . . . 10 6.2. Informative References . . . . . . . . . . . . . . . . . . 10 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11 Intellectual Property and Copyright Statements . . . . . . . . . . 12 1. Introduction Nadeau, et al. Expires August 2009 [Page 2] draft-ietf-pwe3-pw-tc-mib-15 February 2009 This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it defines Textual Conventions used for Pseudowire (PW) technology and PWE3 MIB modules. Comments should be made directly to the PWE3 mailing list at pwe3@ietf.org. 2. The Internet-Standard Management Framework For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 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 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. Object Definitions PW-TC-STD-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, Unsigned32, mib-2 FROM SNMPv2-SMI -- [RFC2578] TEXTUAL-CONVENTION FROM SNMPv2-TC; -- [RFC2579] pwTcStdMIB MODULE-IDENTITY LAST-UPDATED "200902151200Z" -- 15 February 2009 12:00:00 GMT ORGANIZATION "Pseudowire Edge-to-Edge Emulation (PWE3) Working Group" CONTACT-INFO " Thomas D. Nadeau Email: tom.nadeau@bt.com David Zelig Email: davidz@oversi.com Nadeau, et al. Expires August 2009 [Page 3] draft-ietf-pwe3-pw-tc-mib-15 February 2009 Orly Nicklass Email: orlyn@radvision.com The PWE3 Working Group (email distribution pwe3@ietf.org, http://www.ietf.org/html.charters/pwe3-charter.html) " DESCRIPTION "This MIB module defines TEXTUAL CONVENTIONS for concepts used in Pseudowire Edge-to-Edge networks. Copyright (C) The IETF Trust (2009). The initial version of this MIB module as published in RFC YYYY. For full legal notices see the RFC itself or see: http://www.ietf.org/copyrights/ianamib.html -- RFC Editor: Please replace YYYY with the RFC number and remove -- this note. " -- Revision history. REVISION "200902151200Z" -- 15 february 2009 12:00:00 GMT DESCRIPTION "Original Version" ::= { mib-2 XXXX } -- RFC Editor: please replace XXXX with IANA assigned value and -- delete this note. PwGroupID ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "An administrative identification for grouping a set of service-specific pseudowire services." SYNTAX Unsigned32 PwIDType ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "Pseudowire Identifier. Used to identify the PW (together with some other fields) in the signaling session." SYNTAX Unsigned32 PwIndexType ::= TEXTUAL-CONVENTION Nadeau, et al. Expires August 2009 [Page 4] draft-ietf-pwe3-pw-tc-mib-15 February 2009 DISPLAY-HINT "d" STATUS current DESCRIPTION "Pseudowire Index. A unique value, greater than zero, for each locally-defined PW for indexing several MIB tables associated with the particular PW. It is recommended that values are assigned contiguously starting from 1. The value for each PW MUST remain constant at least from one re-initialization to the next re-initialization." SYNTAX Unsigned32 (1..4294967295) PwIndexOrZeroType ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "This textual convention is an extension of the PwIndexType convention. The latter defines a greater- than-zero value used to identify a Pseudowire in the managed system. This extension permits the additional value of zero. The zero value is object-specific and MUST therefore be defined as part of the description of any object which uses this syntax. Examples of the usage of zero might include situations where Pseudowire was unknown, or when none or all Pseudowires need to be referenced." SYNTAX Unsigned32 (0..4294967295) PwOperStatusTC ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Indicates the operational status of the PW. - up(1): Ready to pass packets. - down(2): If PW signaling is not yet finished, or indications available at the service level indicate that the PW is not passing packets. - testing(3): If AdminStatus at the PW level is set to test. - dormant(4): The PW is not in a condition to pass packets, but is in a 'pending' state, waiting for some external event. - notPresent(5): Some component is missing to accomplish the setup of the PW. It can be configuration error, incomplete configuration or missing of H/W component. - lowerLayerDown(6):One or more of the lower-layer interfaces responsible for running the underlying PSN Nadeau, et al. Expires August 2009 [Page 5] draft-ietf-pwe3-pw-tc-mib-15 February 2009 is not in OperStatus 'up' state." SYNTAX INTEGER { up(1), down(2), testing(3), dormant(4), notPresent(5), lowerLayerDown(6) } PwAttachmentIdentifierType ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "An octet string used in the generalized FEC element for identifying attachment forwarder and groups. A NULL identifier is of zero length. " SYNTAX OCTET STRING (SIZE (0..255)) PwGenIdType ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Represents the AGI Type and AII Type in generalized FEC signaling and configuration. " SYNTAX Unsigned32( 0..254 ) PwCwStatusTC ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Indicates the status of the control word (CW) negotiation based on the local configuration and the indications received from the peer node. waitingForNextMsg(1) indicates that the node is waiting for another label mapping from the peer. sentWrongBitErrorCode(2) indicates that the local node has notified the peer about a mismatch in the C-bit. rxWithdrawWithWrongBitErrorCode(3) indicates that a withdraw message has been received with the wrong C-bit error code. illegalReceivedBit(4) indicates a C-bit configuration with the peer which is not compatible with the PW type. cwPresent(5) indicates that the CW is present for this PW: If signaling is used - the C-bit is set and agreed between the Nadeau, et al. Expires August 2009 [Page 6] draft-ietf-pwe3-pw-tc-mib-15 February 2009 nodes, and for manually-configured PW the local configuration requires the use of the CW. cwNotPresent(6) indicates that the CW is not present for this PW: If signaling is used - the C-bit is reset and agreed between the nodes, and for manually-configured PW the local configuration requires that the CW not be used. notYetKnown(7) indicates that a label mapping has not yet been received from the peer. " REFERENCE "Martini, et al, 'Pseudowire Setup and Maintenance using the Label Distribution Protocol', [RFC4447]." SYNTAX INTEGER { waitingForNextMsg (1), sentWrongBitErrorCode (2), rxWithdrawWithWrongBitErrorCode (3), illegalReceivedBit (4), cwPresent (5), cwNotPresent (6), notYetKnown(7) } PwStatus ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Indicates the status of the PW and the interfaces affecting this PW. If none of the bits are set, it indicates no faults are reported. " SYNTAX BITS { pwNotForwarding (0), servicePwRxFault (1), servicePwTxFault (2), psnPwRxFault (3), psnPwTxFault (4) } PwFragSize ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "If set to a value other than zero, it indicates the desired fragmentation length in bytes. If set to zero, fragmentation is not desired for PSN bound packets. " Nadeau, et al. Expires August 2009 [Page 7] draft-ietf-pwe3-pw-tc-mib-15 February 2009 SYNTAX Unsigned32 PwFragStatus ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Indicates the status of the fragmentation/reassembly process based on local configuration and peer capability. noFrag(0) bit indicates that local configuration is for no fragmentation. cfgFragGreaterThanPsnMtu(1) bit indicates the local node is set to fragment, but the fragmentation size is greater than the MTU available at the PSN between the nodes. Fragmentation is not done in this case. cfgFragButRemoteIncapable(2) bit indicates that the local configuration indicates the desire for fragmentation but the peer is not capable of reassembly. remoteFragCapable(3) bit indicates that the remote node is capable to accept fragmented PDUs. fragEnabled(4) bit indicates that fragmentation will be used on this PW. Fragmentation can be used if the local node was configured for fragmentation, the peer has the capability to accept fragmented packets, and the CW is in use for this PW." REFERENCE "Malis, A. and M. Townsley, 'Pseudowire Emulation Edge-to- Edge (PWE3) Fragmentation and Reassembly', [RFC4623]." SYNTAX BITS { noFrag (0), cfgFragGreaterThanPsnMtu (1), cfgFragButRemoteIncapable (2), remoteFragCapable (3), fragEnabled (4) } PwCfgIndexOrzero ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "Index in any of the relevant configuration tables for supplement information regarding configuration of the specific technology. Value 0 implies no additional configuration information is applicable." Nadeau, et al. Expires August 2009 [Page 8] draft-ietf-pwe3-pw-tc-mib-15 February 2009 SYNTAX Unsigned32 (0..4294967295) END 4. Security Considerations This module does not define any management objects. Instead, it defines a set of textual conventions that may be used by other PWE3 MIB modules to define management objects. Meaningful security considerations can only be written in the MIB modules that define management objects. Therefore, this document has no impact on the security of the Internet. 5. IANA Considerations The MIB module in this document uses the following IANA-assigned OBJECT IDENTIFIER values recorded in the SMI Numbers registry: Descriptor OBJECT IDENTIFIER value ---------- ----------------------- pwTcStdMIB { mib-2 XXXX } Editor's Note (to be removed prior to publication): The IANA is requested to assign a value for "XXXX" under the 'mib-2' subtree and to record the assignment in the SMI Numbers registry. When the assignment has been made, the RFC Editor is asked to replace "XXXX" (here and in the MIB module) with the assigned value and to remove this note. 6. References 6.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate requirement Levels", RFC 2119, March 1997. [RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999. [RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J. Nadeau, et al. Expires August 2009 [Page 9] draft-ietf-pwe3-pw-tc-mib-15 February 2009 Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999. [RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999. [RFC4447] Martini, L., Rosen, E., El-Aawar, N., Smith, T., and G. Heron, "Pseudowire Setup and Maintenance Using the Label Distribution Protocol (LDP)", RFC 4447, April 2006. [RFC4623] Malis, A. and M. Townsley, "Pseudowire Emulation Edge-to- Edge (PWE3) Fragmentation and Reassembly", RFC 4623, August 2006. 6.2. Informative References [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002. Authors' Addresses Thomas D. Nadeau (editor) BT BT Centre 81 Newgate Street London EC1A 7AJ United Kingdom Email: tom.nadeau@bt.com David Zelig (editor) Oversi Networks 1 Rishon Letzion St. Petah Tikva Israel Phone: +972 77 3337 750 Email: davidz@oversi.com Orly Nicklass (editor) RADVISION 24 Raul Wallenberg Tel Aviv Nadeau, et al. Expires August 2009 [Page 10] draft-ietf-pwe3-pw-tc-mib-15 February 2009 Phone: +972 3 776 9444 Email: orlyn@radvision.com Acknowledgment Funding for the RFC Editor function is provided by the IETF Administrative Support Activity (IASA). This document was produced by the PWE3 Working Group. Nadeau, et al. Expires August 2009 [Page 11]