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Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 1 PIM Working Group H. Zhao 2 Internet Draft Ericsson 3 Intended status: Standards Track X. Liu 4 Expires: May 16, 2020 Volta 5 Y. Liu 6 Huawei 7 M. Panchanathan 8 Cisco 9 M. Sivakumar 10 Juniper 12 November 17, 2019 14 A Yang Data Model for IGMP/MLD Proxy 15 draft-ietf-pim-igmp-mld-proxy-yang-01.txt 17 Abstract 19 This document defines a YANG data model that can be used to 20 configure and manage Internet Group Management Protocol (IGMP) or 21 Multicast Listener Discovery (MLD) proxy devices. The YANG module in 22 this document conforms to Network Management Datastore Architecture 23 (NMDA). 25 Status of this Memo 27 This Internet-Draft is submitted in full conformance with the 28 provisions of BCP 78 and BCP 79. 30 Internet-Drafts are working documents of the Internet Engineering 31 Task Force (IETF), its areas, and its working groups. Note that 32 other groups may also distribute working documents as Internet- 33 Drafts. 35 Internet-Drafts are draft documents valid for a maximum of six months 36 and may be updated, replaced, or obsoleted by other documents at any 37 time. It is inappropriate to use Internet-Drafts as reference 38 material or to cite them other than as "work in progress." 40 The list of current Internet-Drafts can be accessed at 41 http://www.ietf.org/ietf/1id-abstracts.txt 42 The list of Internet-Draft Shadow Directories can be accessed at 43 http://www.ietf.org/shadow.html 45 This Internet-Draft will expire on May 16, 2020. 47 Copyright Notice 49 Copyright (c) 2019 IETF Trust and the persons identified as the 50 document authors. All rights reserved. 52 This document is subject to BCP 78 and the IETF Trust's Legal 53 Provisions Relating to IETF Documents 54 (http://trustee.ietf.org/license-info) in effect on the date of 55 publication of this document. Please review these documents 56 carefully, as they describe your rights and restrictions with respect 57 to this document. Code Components extracted from this document must 58 include Simplified BSD License text as described in Section 4.e of 59 the Trust Legal Provisions and are provided without warranty as 60 described in the Simplified BSD License. 62 Table of Contents 64 1. Introduction...................................................3 65 1.1. Terminology...............................................3 66 1.2. Tree Diagrams.............................................3 67 2. Design of Data Model...........................................3 68 2.1. Overview..................................................4 69 2.2. Augment /rt:routing/rt:control-plane-protocols/rt:control- 70 plane-protocol.................................................4 71 3. IGMP/MLD Proxy YANG Module.....................................5 72 4. Security Considerations.......................................13 73 5. IANA Considerations...........................................13 74 6. Normative References..........................................14 75 Authors' Addresses...............................................16 77 1. Introduction 79 This document defines a YANG [RFC6020] data model for the management of 80 Internet Group Management Protocol (IGMP) or Multicast Listener 81 Discovery (MLD) proxy devices. 83 The YANG module in this document conforms to the Network Management 84 Datastore Architecture defined in [RFC8342]. The "Network Management 85 Datastore Architecture" (NMDA) adds the ability to inspect the current 86 operational values for configuration, allowing clients to use identical 87 paths for retrieving the configured values and the operational values. 89 1.1. Terminology 91 The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", 92 "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and 93 "OPTIONAL" in this document are to be interpreted as described in BCP 14 94 [RFC2119]. 96 The terminology for describing YANG data models is found in [RFC6020]. 98 1.2. Tree Diagrams 100 A simplified graphical representation of the data model is used in this 101 document. The meaning of the symbols in these diagrams is as follows: 103 o Brackets "[" and "]" enclose list keys. 105 o Abbreviations before data node names: "rw" means configuration 106 (read-write), and "ro" means state data (read-only). 108 o Symbols after data node names: "?" means an optional node, "!" 109 means a presence container, and "*" denotes a list and leaf-list. 111 o Parentheses enclose choice and case nodes, and case nodes are also 112 marked with a colon (":"). 114 o Ellipsis ("...") stands for contents of subtrees that are not 115 shown. 117 2. Design of Data Model 119 The model covers Considerations for Internet Group Management Protocol 120 (IGMP) / Multicast Listener Discovery (MLD) - Based Multicast Forwarding 121 ("IGMP/MLD Proxying") [RFC4605]. 123 The goal of this document is to define a data model that provides a 124 common user interface to IGMP/MLD proxy. This document provides freedom 125 for vendors to adapt this data model to their product implementations. 127 2.1. Overview 129 The IGMP/MLD proxy YANG module defined in this document has all the 130 common building blocks for the IGMP/MLD proxy protocol. 132 The YANG module augments /rt:routing/rt:control-plane- 133 protocols/rt:control-plane-protocol to enable IGMP/MLD proxy and 134 configure other related parameters. 136 This YANG module follows the Guidelines for YANG Module Authors (NMDA) 137 [draft-dsdt-nmda-guidelines-01]. This NMDA ("Network Management 138 Datastore Architecture") architecture provides an architectural 139 framework for datastores as they are used by network management 140 protocols such as NETCONF [RFC6241], RESTCONF [RFC8040] and the YANG 141 [RFC7950] data modeling language. 143 2.2. Augment /rt:routing/rt:control-plane-protocols/rt:control-plane- 144 protocol 146 The YANG module augments /rt:routing/rt:control-plane- 147 protocols/rt:control-plane-protocol to configure IGMP/MLD proxy. The 148 interface list under igmp-proxy or mld-proxy contains upstream 149 interfaces for IGMP/MLD proxy. There is also a constraint to make sure 150 the upstream interface for IGMP/MLD proxy should not be configured PIM. 152 To configure a downstream interface for IGMP/MLD proxy, enable IGMP/MLD 153 on that interface. This is defined in the YANG Data Model for Internet 154 Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD). 155 In IGMP/MLD proxy model downstream-interface is read-only. 157 module: ietf-igmp-mld-proxy 158 augment /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol: 159 +--rw igmp-proxy {feature-igmp-proxy}? 160 +--rw interfaces 161 +--rw interface* [interface-name] 162 +--rw interface-name if:interface-ref 163 +--rw version? uint8 164 +--rw enable? boolean 165 +--rw sender-source-address? inet:ipv4-address 166 +--ro group* [group-address] 167 +--ro group-address inet:ipv4-address 168 +--ro up-time? uint32 169 +--ro filter-mode? enumeration 170 +--ro source* [source-address] 171 +--ro source-address inet:ipv4-address 172 +--ro up-time? uint32 173 +--ro downstream-interface* [interface-name] 174 +--ro interface-name if:interface-ref 175 augment /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol: 176 +--rw mld-proxy {feature-mld-proxy}? 177 +--rw interfaces 178 +--rw interface* [interface-name] 179 +--rw interface-name if:interface-ref 180 +--rw version? uint8 181 +--rw enable? boolean 182 +--rw sender-source-address? inet:ipv6-address 183 +--ro group* [group-address] 184 +--ro group-address inet:ipv6-address 185 +--ro up-time? uint32 186 +--ro filter-mode? enumeration 187 +--ro source* [source-address] 188 +--ro source-address inet:ipv6-address 189 +--ro up-time? uint32 190 +--ro downstream-interface* [interface-name] 191 +--ro interface-name if:interface-ref 193 3. IGMP/MLD Proxy YANG Module 195 file ietf-igmp-mld-proxy@2019-11-01.yang 196 module ietf-igmp-mld-proxy { 197 yang-version 1.1; 198 namespace "urn:ietf:params:xml:ns:yang:ietf-igmp-mld-proxy"; 199 // replace with IANA namespace when assigned 200 prefix imp; 202 import ietf-inet-types { 203 prefix inet; 204 } 206 import ietf-interfaces { 207 prefix if; 208 } 210 import ietf-routing { 211 prefix rt; 212 } 214 import ietf-pim-base { 215 prefix pim-base; 216 } 218 organization 219 "IETF PIM Working Group"; 221 contact 222 "WG Web: 223 WG List: 225 Editors: Hongji Zhao 226 228 Xufeng Liu 229 231 Yisong Liu 232 234 Mani Panchanathan 235 237 Mahesh Sivakumar 238 240 "; 242 description 243 "The module defines a collection of YANG definitions common for 244 all Internet Group Management Protocol (IGMP) and Multicast 245 Listener Discovery (MLD) Proxy devices. 247 Copyright (c) 2019 IETF Trust and the persons identified as 248 authors of the code. All rights reserved. 250 Redistribution and use in source and binary forms, with or 251 without modification, is permitted pursuant to, and subject to 252 the license terms contained in, the Simplified BSD License set 253 forth in Section 4.c of the IETF Trust's Legal Provisions 254 Relating to IETF Documents 255 (http://trustee.ietf.org/license-info). 257 This version of this YANG module is part of RFC XXXX; see the 258 RFC itself for full legal notices."; 260 revision 2019-11-01 { 261 description 262 "Initial revision."; 263 reference 264 "RFC XXXX: A YANG Data Model for IGMP and MLD Proxy"; 265 } 266 /* 267 * Features 268 */ 270 feature feature-igmp-proxy { 271 description 272 "Support IGMP Proxy protocol."; 273 reference 274 "RFC 4605"; 275 } 277 feature feature-mld-proxy { 278 description 279 "Support MLD Proxy protocol."; 280 reference 281 "RFC 4605"; 282 } 284 /* 285 * Identities 286 */ 288 identity igmp-proxy { 289 base rt:control-plane-protocol; 290 description 291 "IGMP Proxy protocol"; 292 } 294 identity mld-proxy { 295 base rt:control-plane-protocol; 296 description 297 "MLD Proxy protocol"; 298 } 300 /* 301 * Typedefs 302 */ 304 /* 305 * Groupings 306 */ 308 grouping per-interface-config-attributes { 310 description "Config attributes under interface view"; 312 leaf enable { 313 type boolean; 314 default false; 315 description 316 "Set the value to true to enable IGMP/MLD proxy"; 317 } 318 } // per-interface-config-attributes 320 grouping state-group-attributes { 321 description 322 "State group attributes"; 324 leaf up-time { 325 type uint32; 326 units seconds; 327 description 328 "The elapsed time for (S,G) or (*,G)."; 329 } 331 leaf filter-mode { 332 type enumeration { 333 enum "include" { 334 description 335 "In include mode, reception of packets sent 336 to the specified multicast address is requested 337 only from those IP source addresses listed in the 338 source-list parameter"; 339 } 340 enum "exclude" { 341 description 342 "In exclude mode, reception of packets sent 343 to the given multicast address is requested 344 from all IP source addresses except those 345 listed in the source-list parameter."; 346 } 347 } 348 description 349 "Filter mode for a multicast group, 350 may be either include or exclude."; 351 } 352 } // state-group-attributes 354 /* augments */ 356 augment "/rt:routing/rt:control-plane-protocols"+ 357 "/rt:control-plane-protocol" { 359 description 360 "IGMP Proxy augmentation to routing control plane protocol 361 configuration and state."; 363 container igmp-proxy { 364 when 'derived-from-or-self(../rt:type, "imp:igmp-proxy")' { 365 description 366 "This container is only valid for IGMP Proxy protocol."; 367 } 368 if-feature feature-igmp-proxy; 369 description "IGMP proxy"; 370 container interfaces { 371 description 372 "Containing a list of upstream interfaces."; 374 list interface { 375 key "interface-name"; 376 description 377 "List of upstream interfaces."; 379 leaf interface-name { 380 type if:interface-ref; 381 must "not( current() = /rt:routing"+ 382 "/rt:control-plane-protocols/pim-base:pim"+ 383 "/pim-base:interfaces/pim-base:interface"+ 384 "/pim-base:name )" { 386 description 387 "The upstream interface for IGMP proxy 388 should not be configured PIM."; 389 } 390 description "The upstream interface name."; 391 } 393 leaf version { 394 type uint8 { 395 range "1..3"; 396 } 397 default 2; 398 description "IGMP version."; 399 } 401 uses per-interface-config-attributes; 403 leaf sender-source-address { 404 type inet:ipv4-address; 405 description 406 "The sender source address of 407 IGMP memembership report or leave."; 408 } 410 list group { 411 key "group-address"; 412 config false; 413 description 414 "Multicast group membership information 415 that joined on the interface."; 417 leaf group-address { 418 type inet:ipv4-address; 419 description 420 "Multicast group address."; 421 } 423 uses state-group-attributes; 425 list source { 426 key "source-address"; 427 description 428 "List of multicast source information 429 of the multicast group."; 430 leaf source-address { 431 type inet:ipv4-address; 432 description 433 "Multicast source address"; 434 } 436 leaf up-time { 437 type uint32; 438 units seconds; 439 description 440 "The elapsed time for (S,G) or (*,G)."; 441 } 443 list downstream-interface { 444 key "interface-name"; 445 description "The downstream interfaces list."; 446 leaf interface-name { 447 type if:interface-ref; 448 description 449 "Downstream interfaces for each upstream-interface"; 450 } 451 } 452 } // list source 453 } // list group 454 } // interface 455 } // interfaces 456 } 457 } 459 augment "/rt:routing/rt:control-plane-protocols"+ 460 "/rt:control-plane-protocol" { 462 description 463 "MLD Proxy augmentation to routing control plane protocol 464 configuration and state."; 466 container mld-proxy { 467 when 'derived-from-or-self(../rt:type, "imp:mld-proxy")' { 468 description 469 "This container is only valid for MLD Proxy protocol."; 470 } 471 if-feature feature-mld-proxy; 472 description "MLD proxy"; 473 container interfaces { 474 description 475 "Containing a list of upstream interfaces."; 477 list interface { 478 key "interface-name"; 479 description 480 "List of upstream interfaces."; 482 leaf interface-name { 483 type if:interface-ref; 484 must "not( current() = /rt:routing"+ 485 "/rt:control-plane-protocols/pim-base:pim"+ 486 "/pim-base:interfaces/pim-base:interface"+ 487 "/pim-base:name )" { 489 description 490 "The upstream interface for MLD proxy 491 should not be configured PIM."; 492 } 493 description "The upstream interface name."; 494 } 496 leaf version { 497 type uint8 { 498 range "1..2"; 499 } 500 default 2; 501 description "MLD version."; 502 } 504 uses per-interface-config-attributes; 506 leaf sender-source-address { 507 type inet:ipv6-address; 508 description 509 "The sender source address of 510 MLD memembership report or leave."; 511 } 513 list group { 514 key "group-address"; 515 config false; 516 description 517 "Multicast group membership information 518 that joined on the interface."; 520 leaf group-address { 521 type inet:ipv6-address; 522 description 523 "Multicast group address."; 524 } 526 uses state-group-attributes; 528 list source { 529 key "source-address"; 530 description 531 "List of multicast source information 532 of the multicast group."; 533 leaf source-address { 534 type inet:ipv6-address; 535 description 536 "Multicast source address"; 537 } 539 leaf up-time { 540 type uint32; 541 units seconds; 542 description 543 "The elapsed time for (S,G) or (*,G)."; 544 } 546 list downstream-interface { 547 key "interface-name"; 548 description "The downstream interfaces list."; 549 leaf interface-name { 550 type if:interface-ref; 551 description 552 "Downstream interfaces for each upstream-interface"; 553 } 554 } 555 } // list source 556 } // list group 557 } // interface 558 } // interfaces 559 } 560 } 562 /* RPCs */ 564 } 565 566 4. Security Considerations 568 The YANG module specified in this document defines a schema for data 569 that is designed to be accessed via network management protocols such 570 as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer 571 is the secure transport layer, and the mandatory-to-implement secure 572 transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer 573 is HTTPS, and the mandatory-to-implement secure transport is TLS 574 [RFC5246]. 576 The NETCONF access control model [RFC6536] provides the means to 577 restrict access for particular NETCONF or RESTCONF users to a 578 preconfigured subset of all available NETCONF or RESTCONF protocol 579 operations and content. 581 There are a number of data nodes defined in this YANG module that are 582 writable/creatable/deletable (i.e., config true, which is the 583 default). These data nodes may be considered sensitive or vulnerable 584 in some network environments. Write operations (e.g., edit-config) to 585 these data nodes without proper protection can have a negative effect 586 on network operations. These are the subtrees and data nodes and 587 their sensitivity/vulnerability: 589 /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol 591 Unauthorized access to any data node of these subtrees can adversely 592 affect the IGMP/MLD proxy subsystem of both the local device and the 593 network. This may lead to network malfunctions, delivery of packets 594 to inappropriate destinations, and other problems. 596 Some of the readable data nodes in this YANG module may be considered 597 sensitive or vulnerable in some network environments. It is thus 598 important to control read access (e.g., via get, get-config, or 599 notification) to these data nodes. These are the subtrees and data 600 nodes and their sensitivity/vulnerability: 602 /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol 604 Unauthorized access to any data node of these subtrees can disclose 605 the operational state information of IGMP/MLD proxy on this device. 607 5. IANA Considerations 609 RFC Ed.: In this section, replace all occurrences of 'XXXX' with the 610 actual RFC number (and remove this note). 612 This document registers the following namespace URIs in the IETF XML 614 registry [RFC3688]: 616 -------------------------------------------------------------------- 618 URI: urn:ietf:params:xml:ns:yang:ietf-igmp-mld-proxy 620 Registrant Contact: The IESG. 622 XML: N/A, the requested URI is an XML namespace. 624 -------------------------------------------------------------------- 626 This document registers the following YANG modules in the YANG 627 Module Names registry [RFC7950]: 629 -------------------------------------------------------------------- 631 name: ietf-igmp-mld-proxy 633 namespace: urn:ietf:params:xml:ns:yang:ietf-igmp-mld-proxy 635 prefix: imp 637 reference: RFC XXXX 639 -------------------------------------------------------------------- 641 6. Normative References 643 [RFC2236] Fenner, W., "Internet Group Management Protocol, Version 644 2", RFC 2236, November 1997. 646 [RFC2710] Deering, S., Fenner, W., and B. Haberman, "Multicast 647 Listener Discovery (MLD) for IPv6", RFC 2710, October 1999. 649 [RFC3376] Cain, B., Deering, S., Kouvelas, I., Fenner, B., and A. 650 Thyagarajan, "Internet Group Management Protocol, Version 651 3", RFC 3376, October 2002. 653 [RFC3810] Vida, R. and L. Costa, "Multicast Listener Discovery 654 Version 2 (MLDv2) for IPv6", RFC 3810, June 2004. 656 [RFC4604] Holbrook, H., Cain, B., and B. Haberman, "Using Internet 657 Group Management Protocol Version 3 (IGMPv3) and Multicast 658 Listener Discovery Protocol Version 2 (MLDv2) for Source- 659 Specific Multicast", RFC 4604, August 2006. 661 [RFC4605] B. Fenner, H. He, B. Haberman and H. Sandick, "Internet 662 Group Management Protocol (IGMP) / Multicast Listener 663 Discovery (MLD) - Based Multicast Forwarding ("IGMP/MLD 664 Proxying")", RFC 4605, August 2006. 666 [RFC4607] Holbrook, H. and B. Cain, "Source-Specific Multicast for 667 IP", RFC 4607, August 2006. 669 [RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for 670 the Network Configuration Protocol (NETCONF)", RFC 6020, 671 October 2010. 673 [RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types", RFC 6991, 674 July 2013. 676 [RFC8342] M. Bjorklund and J. Schoenwaelder, "Network Management 677 Datastore Architecture (NMDA)", RFC 8342, March 2018. 679 [RFC8343] M. Bjorklund, "A YANG Data Model for Interface Management", 680 RFC 8343, March 2018. 682 [draft-ietf-pim-igmp-mld-yang-06] X. Liu, F. Guo, M. Sivakumar, P. 683 McAllister, A. Peter, "A YANG data model for Internet Group 684 Management Protocol (IGMP) and Multicast Listener Discovery 685 (MLD)", draft-ietf-pim-igmp-mld-yang-06, Oct 20, 2017. 687 [draft-dsdt-nmda-guidelines-01] M. Bjorklund, J. Schoenwaelder, P. 688 Shafer, K. Watsen, R. Wilton, "Guidelines for YANG Module 689 Authors (NMDA)", draft-dsdt-nmda-guidelines-01, May 2017 691 [draft-ietf-netmod-revised-datastores-03] M. Bjorklund, J. 692 Schoenwaelder, P. Shafer, K. Watsen, R. Wilton, "Network 693 Management Datastore Architecture", draft-ietf-netmod- 694 revised-datastores-03, July 3, 2017 696 Authors' Addresses 698 Hongji Zhao 699 Ericsson (China) Communications Company Ltd. 700 Ericsson Tower, No. 5 Lize East Street, 701 Chaoyang District Beijing 100102, P.R. China 702 Email: hongji.zhao@ericsson.com 704 Xufeng Liu 705 Volta Networks 706 USA 707 EMail: Xufeng.liu.ietf@gmail.com 709 Yisong Liu 710 Huawei Technologies 711 Huawei Bld., No.156 Beiqing Rd. 712 Beijing 100095 713 China 714 Email: liuyisong@huawei.com 716 Mani Panchanathan 717 Cisco 718 India 719 Email: mapancha@cisco.com 721 Mahesh Sivakumar 722 Juniper Networks 723 1133 Innovation Way 724 Sunnyvale, California 725 USA 726 EMail: sivakumar.mahesh@gmail.com