Pseudo Wire Edge-to-Edge Emulation T. Nadeau, Ed. Internet-Draft Cisco Systems, Inc. Intended status: Standards Track D. Zelig, Ed. Expires: December 2, 2007 Corrigent Systems O. Nicklass, Ed. RAD Data Communicationss, Ltd. May 31, 2007 Definitions for Textual Conventions and for Managing Pseudo-Wires over PSN draft-ietf-pwe3-pw-tc-mib-11 Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of 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 December 2, 2007. Copyright Notice Copyright (C) The IETF Trust (2007). Abstract This memo defines a Management Information Base (MIB) module which contains Textual Conventions (TCs) to represent commonly-used Pseudo Wire (PW) management information. The intent is that these TCs will be imported and used in PW-related MIB modules that would otherwise Nadeau, et al. Expires December 2, 2007 [Page 1] Internet-Draft PW TC MIB May 2007 define their own representations. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. The Internet-Standard Management Framework . . . . . . . . . . 3 3. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3 4. Object Definitions . . . . . . . . . . . . . . . . . . . . . . 3 5. Security Considerations . . . . . . . . . . . . . . . . . . . 9 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9 7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.1. Normative References . . . . . . . . . . . . . . . . . . . 10 7.2. Informative References . . . . . . . . . . . . . . . . . . 10 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10 Intellectual Property and Copyright Statements . . . . . . . . . . 12 Nadeau, et al. Expires December 2, 2007 [Page 2] Internet-Draft PW TC MIB May 2007 1. Introduction 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 Pseudo Wire (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 [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,[RFC2578], STD 58, [RFC2579] and STD 58, [RFC2580]. 3. Conventions 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 RFC-2119 [BCP14]. This document adopts the definitions, acronyms and mechanisms described in [RFC3985]. Unless otherwise stated, the mechanisms of [RFC3985] apply and will not be described again here. 4. Object Definitions PW-TC-STD-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, Unsigned32, transmission FROM SNMPv2-SMI -- [RFC2578] TEXTUAL-CONVENTION FROM SNMPv2-TC; -- [RFC2579] Nadeau, et al. Expires December 2, 2007 [Page 3] Internet-Draft PW TC MIB May 2007 pwTcStdMIB MODULE-IDENTITY LAST-UPDATED "200705241200Z" -- 24 May 2007 12:00:00 GMT ORGANIZATION "Pseudo Wire Edge-to-Edge Emulation (PWE3) Working Group" CONTACT-INFO " Thomas D. Nadeau Email: tnadeau@cisco.com David Zelig Email: davidz@corrigent.com Orly Nicklass Email: orly_n@rad.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 Pseudo Wire Edge-to-Edge networks. Copyright (C) The IETF Trust (2007). 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 "200705241200Z" -- 24 May 2007 12:00:00 GMT DESCRIPTION "Original Version" ::= { transmission 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 pseudo-wire services." SYNTAX Unsigned32 Nadeau, et al. Expires December 2, 2007 [Page 4] Internet-Draft PW TC MIB May 2007 PwIDType ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "Pseudo-Wire Identifier. Used to identify the PW (together with some other fields) in the signaling session." SYNTAX Unsigned32 PwIndexType ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "Pseudo Wire 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 Pseudo Wire 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 Pseudo Wire was unknown, or when none or all Pseudo Wires need to be referenced." SYNTAX Unsigned32 (0..4294967295) PwVlanCfg ::= TEXTUAL-CONVENTION DISPLAY-HINT "d" STATUS current DESCRIPTION "VLAN configuration for Ethernet PW. Values between 0 and 4095 indicate the actual VLAN field value. A value of 4096 indicates that the object refers to untagged frames, i.e. frames without a 802.1Q field. A value of 4097 indicates that the object is not relevant." Nadeau, et al. Expires December 2, 2007 [Page 5] Internet-Draft PW TC MIB May 2007 SYNTAX Unsigned32 (0..4097) 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 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)) PwCwStatusTC ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Indicates the status of the control word negotiation based on the local configuration and the indications received from the peer node. Nadeau, et al. Expires December 2, 2007 [Page 6] Internet-Draft PW TC MIB May 2007 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 nodes, and for manualy-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 manualy-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), Nadeau, et al. Expires December 2, 2007 [Page 7] Internet-Draft PW TC MIB May 2007 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. " SYNTAX Unsigned32 PwFragStatus ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Indicates the status of the fragmentation 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 fragmentation. remoteFragCapable(3) bit indicates that the remote node is capable to accept fragmented PDUs. fragEnabled(4) bit indicates that fargmenteation will be used on this PW. Fragmentation can be used if the local node was configured for fragmentation, the peer has the cabability 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), Nadeau, et al. Expires December 2, 2007 [Page 8] Internet-Draft PW TC MIB May 2007 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." SYNTAX Unsigned32 (0..4294967295) END 5. 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. 6. 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 { transmission XXXX } Editor's Note (to be removed prior to publication): The IANA is requested to assign a value for "XXXX" under the 'transmission' 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. Nadeau, et al. Expires December 2, 2007 [Page 9] Internet-Draft PW TC MIB May 2007 7. References 7.1. Normative References [BCP14] Bradner, S., "Keywords for Use in RFCs to Indicate Requirement Levels", BCP 14, 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. 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. 7.2. 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. [RFC3985] Bryant, S. and P. Pate, "Pseudo Wire Emulation Edge-to- Edge (PWE3) Architecture", RFC 3985, March 2005. Authors' Addresses Thomas D. Nadeau (editor) Cisco Systems, Inc. 250 Apollo Drive Chelmsford, MA 01824 USA Email: tnadeau@cisco.com Nadeau, et al. Expires December 2, 2007 [Page 10] Internet-Draft PW TC MIB May 2007 David Zelig (editor) Corrigent Systems 126, Yigal Alon St. Tel Aviv, Israel Phone: +972 3 6945 273 Email: davidz@corrigent.com Orly Nicklass (editor) RAD Data Communicationss, Ltd. 24 Raul Wallenberg St. Tel Aviv, Israel Phone: +972 3 7659969 Email: orly_n@rad.com Nadeau, et al. Expires December 2, 2007 [Page 11] Internet-Draft PW TC MIB May 2007 Full Copyright Statement Copyright (C) The IETF Trust (2007). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. 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Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat 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 implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Acknowledgment Funding for the RFC Editor function is provided by the IETF Administrative Support Activity (IASA). Nadeau, et al. Expires December 2, 2007 [Page 12]