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Checking references for intended status: Informational ---------------------------------------------------------------------------- == Outdated reference: A later version (-08) exists of draft-ietf-bier-architecture-03 Summary: 0 errors (**), 0 flaws (~~), 2 warnings (==), 1 comment (--). Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 2 BIER Working Group G. Mirsky 3 Internet-Draft Ericsson 4 Intended status: Informational E. Nordmark 5 Expires: March 26, 2017 Arista Networks 6 C. Pignataro 7 N. Kumar 8 Cisco Systems, Inc. 9 S. Aldrin 10 Google 11 L. Zheng 12 M. Chen 13 Huawei Technologies 14 N. Akiya 15 Big Switch Networks 16 S. Pallagatti 17 September 22, 2016 19 Operations, Administration and Maintenance (OAM) Requirements for Bit 20 Index Explicit Replication (BIER) Layer 21 draft-ietf-bier-oam-requirements-02 23 Abstract 25 This document describes a list of functional requirement toward 26 Operations, Administration and Maintenance (OAM) toolset in Bit Index 27 Explicit Replication (BIER) layer of a network. 29 Status of This Memo 31 This Internet-Draft is submitted in full conformance with the 32 provisions of BCP 78 and BCP 79. 34 Internet-Drafts are working documents of the Internet Engineering 35 Task Force (IETF). Note that other groups may also distribute 36 working documents as Internet-Drafts. The list of current Internet- 37 Drafts is at http://datatracker.ietf.org/drafts/current/. 39 Internet-Drafts are draft documents valid for a maximum of six months 40 and may be updated, replaced, or obsoleted by other documents at any 41 time. It is inappropriate to use Internet-Drafts as reference 42 material or to cite them other than as "work in progress." 44 This Internet-Draft will expire on March 26, 2017. 46 Copyright Notice 48 Copyright (c) 2016 IETF Trust and the persons identified as the 49 document authors. All rights reserved. 51 This document is subject to BCP 78 and the IETF Trust's Legal 52 Provisions Relating to IETF Documents 53 (http://trustee.ietf.org/license-info) in effect on the date of 54 publication of this document. Please review these documents 55 carefully, as they describe your rights and restrictions with respect 56 to this document. Code Components extracted from this document must 57 include Simplified BSD License text as described in Section 4.e of 58 the Trust Legal Provisions and are provided without warranty as 59 described in the Simplified BSD License. 61 Table of Contents 63 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 64 1.1. Conventions used in this document . . . . . . . . . . . . 2 65 1.1.1. Terminology . . . . . . . . . . . . . . . . . . . . . 3 66 1.1.2. Requirements Language . . . . . . . . . . . . . . . . 3 67 2. Requirements . . . . . . . . . . . . . . . . . . . . . . . . 3 68 3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4 69 4. Security Considerations . . . . . . . . . . . . . . . . . . . 4 70 5. Acknowledgement . . . . . . . . . . . . . . . . . . . . . . . 4 71 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 4 72 6.1. Normative References . . . . . . . . . . . . . . . . . . 5 73 6.2. Informative References . . . . . . . . . . . . . . . . . 5 74 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5 76 1. Introduction 78 [I-D.ietf-bier-architecture] introduces and explains Bit Index 79 Explicit Replication (BIER) architecture and how it supports 80 forwarding of multicast data packets. 82 This document lists the OAM requirements for BIER layer of multicast 83 domain. The list can further be used to for gap analysis of 84 available OAM tools to identify possible enhancements of existing or 85 whether new OAM tools are required to support proactive and on-demand 86 path monitoring and service validation. 88 1.1. Conventions used in this document 89 1.1.1. Terminology 91 Term "BIER OAM" used in this document interchangeably with longer 92 version "set of OAM protocols, methods and tools for BIER layer". 94 BFR: Bit-Forwarding Router 96 BFER: Bit-Forwarding Egress Router 98 BIER: Bit Index Explicit Replication 100 OAM: Operations, Administration and Maintenance 102 1.1.2. Requirements Language 104 The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", 105 "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and 106 "OPTIONAL" in this document are to be interpreted as described in 107 [RFC2119]. 109 2. Requirements 111 This section lists requirements for OAM of BIER layer: 113 1. The listed requirements MUST be supported with any type of 114 transport layer over which BIER layer can be realized. 116 2. It MUST be possible to initialize BIER OAM session from any Bit- 117 Forwarding Router (BFR) of the given BIER domain. 119 3. It SHOULD be possible to initialize BIER OAM session from a 120 centralized controller. 122 4. BIER OAM MUST support proactive and on-demand OAM monitoring and 123 measurement methods. 125 5. BIER OAM MUST support unidirectional OAM methods, both 126 continuity check and performance measurement. 128 6. BIER OAM packets MUST be in-band, i.e. follow exactly the same 129 path as data plane traffic, in forward direction, i.e. from 130 ingress toward egress end point(s) of the OAM test session. 132 7. BIER OAM MUST support bi-directional OAM methods. Such OAM 133 methods MAY combine in-band monitoring or measurement in forward 134 direction and out-of-band notification in the reverse direction, 135 i.e. from egress to ingress end point of the OAM test session. 137 8. BIER OAM MUST support proactive monitoring of BFER availability 138 by a BFR in the given BIER domain, e.g. p2mp BFD active tail 139 support. 141 9. BIER OAM MUST support Path Maximum Transmission Unit discovery. 143 10. BIER OAM MUST support Reverse Defect Indication (RDI) 144 notification of the source of continuity checking BFR by Bit- 145 Forwarding Egress Routers (BFERs), e.g. by using Diag in p2mp 146 BFD with active tail support. 148 11. BIER OAM MUST support active and passive performance measurement 149 methods. 151 12. BIER OAM MUST support unidirectional performance measurement 152 methods to calculate throughput, loss, delay and delay variation 153 metrics. [RFC6374] provides great details into performance 154 measurement and performance metrics. 156 13. BIER OAM MUST support defect notification mechanism, like Alarm 157 Indication Signal. Any BFR in the given BIER domain MAY 158 originate a defect notification addressed to any subset of BFRs 159 within the domain. 161 14. BIER OAM MUST support methods to enable survivability of a BIER 162 layer. These recovery methods MAY use protection switching and 163 restoration. 165 3. IANA Considerations 167 This document does not propose any IANA consideration. This section 168 may be removed. 170 4. Security Considerations 172 This document list the OAM requirement for BIER-enabled domain and 173 does not raise any security concerns or issues in addition to ones 174 common to networking. 176 5. Acknowledgement 178 TBD 180 6. References 181 6.1. Normative References 183 [I-D.ietf-bier-architecture] 184 Wijnands, I., Rosen, E., Dolganow, A., Przygienda, T., and 185 S. Aldrin, "Multicast using Bit Index Explicit 186 Replication", draft-ietf-bier-architecture-03 (work in 187 progress), January 2016. 189 [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate 190 Requirement Levels", BCP 14, RFC 2119, 191 DOI 10.17487/RFC2119, March 1997, 192 . 194 6.2. Informative References 196 [RFC6374] Frost, D. and S. Bryant, "Packet Loss and Delay 197 Measurement for MPLS Networks", RFC 6374, 198 DOI 10.17487/RFC6374, September 2011, 199 . 201 Authors' Addresses 203 Greg Mirsky 204 Ericsson 206 Email: gregory.mirsky@ericsson.com 208 Erik Nordmark 209 Arista Networks 211 Email: nordmark@acm.org 213 Carlos Pignataro 214 Cisco Systems, Inc. 216 Email: cpignata@cisco.com 218 Nagendra Kumar 219 Cisco Systems, Inc. 221 Email: naikumar@cisco.com 222 Sam Aldrin 223 Google 225 Email: aldrin.ietf@gmail.com 227 Lianshu Zheng 228 Huawei Technologies 230 Email: vero.zheng@huawei.com 232 Mach Chen 233 Huawei Technologies 235 Email: mach.chen@huawei.com 237 Nobo Akiya 238 Big Switch Networks 240 Email: nobo.akiya.dev@gmail.com 242 Santosh Pallagatti 244 Email: santosh.palagatti@gmail.com