BIER WG Fangwei. Hu Internet-Draft Ran. Chen Intended status: Standards Track ZTE Corporation Expires: December 14, 2017 R. Gu China Mobile June 12, 2017 YANG Data Model for BIER OAM draft-hu-bier-oam-yang-01.txt Abstract This document defines YANG data model for Bit Index Explicit Replication (BIER) Operations, Administration, and Maintenance (OAM). It extends from the basic YANG data model for Layer independent OAM Management defined in [I-D.ietf-lime-yang-connectionless-oam] with BIER technology specifics. It includes BIER OAM related configuration and state. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. 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Expires December 14, 2017 [Page 1] Internet-Draft BIER YANG June 2017 include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Conventions and Terminology . . . . . . . . . . . . . . . . . 2 2.1. Conventions . . . . . . . . . . . . . . . . . . . . . . . 3 2.2. Terminologies . . . . . . . . . . . . . . . . . . . . . . 4 3. Architecture of OAM YANG Model and Relationship to BIER OAM . 4 4. BIER Extensions to LIME connectionless YANG Model . . . . . . 5 4.1. Test Point Locations . . . . . . . . . . . . . . . . . . 5 5. BIER OAM YANG Data Design . . . . . . . . . . . . . . . . . . 5 6. BIER OAM YANG model . . . . . . . . . . . . . . . . . . . . . 6 7. Security Considerations . . . . . . . . . . . . . . . . . . . 8 8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 8 9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9 10. Normative References . . . . . . . . . . . . . . . . . . . . 9 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10 1. Introduction YANG [RFC6020] is a data modeling language used to model configuration and state data manipulated by the Network Configuration Protocol (NETCONF) [RFC6241], NETCONF remote procedure calls (RPC), and NETCONF notifications. This document defines the YANG data model for Bit Index Explicit Replication (BIER)OAM [I-D.ietf-bier-ping]. The BIER OAM YANG module involves the OAM configuration, and notifications, etc. Currently, [I-D.ietf-lime-yang-connectionless-oam] proposes a basic YANG data model for technology-independent abstraction of key OAM constructs for connectionless protocols. BIER OAM YANG data model can be defined by directly extending the basic model with BIER technology specifics. It can bring some obvious benefits such as unified format, reusable parts, and correlation of defects, faults, network failure at the specific layer. In addition, various components in the BIER technology specific YANG data model defined in [I-D.ietf-bier-bier-yang] can be directly reused in this draft to define the BIER OAM YANG data model. 2. Conventions and Terminology Hu, et al. Expires December 14, 2017 [Page 2] Internet-Draft BIER YANG June 2017 2.1. 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 [RFC2119]. The following terms are defined in [RFC6241] and are not redefined here: o client o configuration data o server o state data The following terms are defined in [RFC6020] and are not redefined here: o augment o data model o data node The terminology for describing YANG data models is found in [RFC6020]. The following notations are used within the data tree and carry the meaning as noted below. Each node is printed as: is one of: + for current x for deprecated o for obsolete is one of: rw for configuration data ro for non-configuration data -x for rpcs -n for notifications Hu, et al. Expires December 14, 2017 [Page 3] Internet-Draft BIER YANG June 2017 is the name of the node If the node is augmented into the tree from another module, its name is printed as :. is one of: ? for an optional leaf or choice ! for a presence container * for a leaf-list or list [] for a list's keys is the name of the type for leafs and leaf-lists In this document, these words will appear with that interpretation only when in ALL CAPS. Lower case uses of these words are not to be interpreted as carrying RFC2119 significance. 2.2. Terminologies BFR-ID: Bit-Forwarding Router identify [I-D.ietf-bier-architecture] BIER: Bit Index Explicit Replication[I-D.ietf-bier-architecture] BSL: Bit String Lenght [I-D.ietf-bier-architecture] LIME: Layer Independent OAM Management [I-D.ietf-lime-yang-connectionless-oam] OAM: Operations, Administration, and Maintenance [RFC6291] 3. Architecture of OAM YANG Model and Relationship to BIER OAM Layer independent OAM YANG model [I-D.ietf-lime-yang-connectionless-oam] is used as the basis for all the other connectionless OAM YANG models. This allows users to span across OAM tools of different technologies through a uniform API. The following Figure depicts the relationship of BIER OAM YANG model to the Layer Independent OAM YANG Model. Hu, et al. Expires December 14, 2017 [Page 4] Internet-Draft BIER YANG June 2017 +-+-+-+-+-+-+-+-+-+ | Gen OAM YANG | |(connectionless) | +-+-+-+-+-+-+-+-+-+ | O | +--------------+-----------------------------+ | | | +-+-+-+-++ +-+-++--++ +-+-++--++ | BIER | | SFC | | foo | |OAM YANG| |OAM YANG| |OAM YANG| +-+-+-+-++ +-+-++--++ +-+-+-+-++ | | | | +-+-++--++ +-+-+-+-++ | | SFC | . . . | foo | | |sub tech| |sub tech| | +-+-++--++ +-+-+-+-++ | | | | | | +--------------------------------------------------------+ | Uniform API | +--------------------------------------------------------+ Figure 1 Relationship of BIER OAM YANG model to Layer independent OAM YANG model 4. BIER Extensions to LIME connectionless YANG Model 4.1. Test Point Locations BIER protocol uses BSL ,sub-domain id and BFR-id for the forwarding indicators. So we augment the definition of BSL,sub-domain id and BFR-id from BIER yang data model as the test point locations for BIER OAM YANG data model. 5. BIER OAM YANG Data Design Hu, et al. Expires December 14, 2017 [Page 5] Internet-Draft BIER YANG June 2017 module: ietf-bier-oam augment /nd:networks/nd:network/nd:node/coam:location-type/coam:ip-prefix-location-type/coam:test-point-ip-prefix-location-list/coam:test-point-locations: +--rw bier-test-point-location-list +--rw test-point-locations* [bier-bsl bier-subdomainid bier-bfrid] +--rw bier-bsl bier-bsl +--rw bier-subdomainid bier-subdomainid +--rw bier-bfrid bier-bfrid augment /nd:networks/nd:network/nd:node/coam:location-type/coam:ip-prefix-location-type/coam:test-point-ip-prefix-location-list/coam:test-point-locations/coam:technology: +--:(bier-oam-string) +--rw bier-icmp? string 6. BIER OAM YANG model file "ietf-bier-oam@2017-06-13.yang" module ietf-bier-oam { namespace "urn:ietf:params:xml:ns:yang:ietf-bier-oam"; prefix bieroam; import ietf-bier { prefix bier; } import ietf-connectionless-oam { prefix coam; } import ietf-network{ prefix nd; } organization "IETF BIER(Bit Indexed Explicit Replication ) Working Group"; contact "WG List: WG Chair: Tony Przygienda WG Chair: Greg Shepherd Editor: Fangwei Hu Editor: Ran Chen Editor: Rong Gu "; description Hu, et al. Expires December 14, 2017 [Page 6] Internet-Draft BIER YANG June 2017 "The YANG module defines BIER OAM data model."; revision 2016-12-05{ description "00 revision"; reference "draft-hu-bier-oam-yang-00"; } revision 2017-06-12{ description "01 revision,remove the OAM Layer part."; reference "draft-hu-bier-oam-yang-01"; } typedef bier-bsl { type leafref { path "/bier:bier/bier:bier-global/bier:sub-domain/bier:bitstringlength"; } description "bsl type"; } typedef bier-subdomainid { type leafref { path "/bier:bier/bier:bier-global/bier:sub-domain/bier:sub-domain-id"; } description "sub-domain-id type"; } typedef bier-bfrid { type leafref { path "/bier:bier/bier:bier-global/bier:sub-domain/bier:bfr-id"; } description "bfr-id type"; } identity bier-type { base coam:tp-address-type; description "bier type"; } augment "/nd:networks/nd:network/nd:node/coam:location-type/coam:ip-prefix-location-type" +"/coam:test-point-ip-prefix-location-list/coam:test-point-locations" { container bier-test-point-location-list { list test-point-locations { key "bier-bsl bier-subdomainid bier-bfrid"; Hu, et al. Expires December 14, 2017 [Page 7] Internet-Draft BIER YANG June 2017 leaf bier-bsl { type bier-bsl; description "bier bsl"; } leaf bier-subdomainid { type bier-subdomainid; description "bier sub-domain id"; } leaf bier-bfrid { type bier-bfrid; description "bfr id"; } description "test point locations list "; } description "bier-test-point-location-list"; } description "bier-location-type"; } augment "/nd:networks/nd:network/nd:node/coam:location-type/coam:ip-prefix-location-type" +"/coam:test-point-ip-prefix-location-list/coam:test-point-locations/coam:technology" { case bier-oam-string{ leaf bier-icmp{ type string; description "bier icmp"; } description "bier oam icmp case."; } description "bier icmp technology."; } } 7. Security Considerations TBD. 8. Acknowledgements TBD. Hu, et al. Expires December 14, 2017 [Page 8] Internet-Draft BIER YANG June 2017 9. IANA Considerations TBD. 10. Normative References [I-D.ietf-bier-architecture] Wijnands, I., Rosen, E., Dolganow, A., Przygienda, T., and S. Aldrin, "Multicast using Bit Index Explicit Replication", draft-ietf-bier-architecture-06 (work in progress), April 2017. [I-D.ietf-bier-bier-yang] Chen, R., hu, f., Zhang, Z., dai.xianxian@zte.com.cn, d., and M. Sivakumar, "YANG Data Model for BIER Protocol", draft-ietf-bier-bier-yang-01 (work in progress), January 2017. [I-D.ietf-bier-ping] Kumar, N., Pignataro, C., Akiya, N., Zheng, L., Chen, M., and G. Mirsky, "BIER Ping and Trace", draft-ietf-bier- ping-01 (work in progress), January 2017. [I-D.ietf-lime-yang-connectionless-oam] Kumar, D., Wang, Z., Wu, Q., Rahman, R., and S. Raghavan, "Generic YANG Data Model for Connectionless Operations, Administration, and Maintenance(OAM) protocols", draft- ietf-lime-yang-connectionless-oam-06 (work in progress), June 2017. [RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, DOI 10.17487/RFC6020, October 2010, . [RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed., and A. Bierman, Ed., "Network Configuration Protocol (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011, . [RFC6291] Andersson, L., van Helvoort, H., Bonica, R., Romascanu, D., and S. Mansfield, "Guidelines for the Use of the "OAM" Acronym in the IETF", BCP 161, RFC 6291, DOI 10.17487/RFC6291, June 2011, . Hu, et al. Expires December 14, 2017 [Page 9] Internet-Draft BIER YANG June 2017 Authors' Addresses Fangwei Hu ZTE Corporation No.889 Bibo Rd Shanghai 201203 China Phone: +86 21 68896273 Email: hu.fangwei@zte.com.cn Ran Chen ZTE Corporation No.50 Software Avenue,Yuhuatai District Nanjing, Jiangsu Province 210012 China Phone: +86 025 88014636 Email: chen.ran@zte.com.cn Rong Gu China Mobile 32 Xuanwumen West Ave, Xincheng District Beijing 100053 China Email: gurong@chinamobile.com Hu, et al. Expires December 14, 2017 [Page 10]