PIM Working Group X. Liu Internet-Draft Jabil Intended Status: Standard Track F. Guo Expires: April 20, 2018 Huawei M. Sivakumar Cisco P. McAllister Metaswitch Networks A. Peter Juniper Networks Oct 20, 2017 A YANG data model for Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) draft-ietf-pim-igmp-mld-yang-06 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), 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 April 20, 2018. Copyright Notice Copyright (c) 2017 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 Liu & Guo, etc Expires April, 2018 [Page 1] Internet-Draft IGMP & MLD Yang Model October 2017 carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must 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. Abstract This document defines a YANG data model that can be used to configure and manage Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) devices. Table of Contents 1. Introduction ................................................ 2 1.1. Requirements Language................................... 3 1.2. Terminology ............................................ 3 2. Design of Data model......................................... 3 2.1. Scope of model ......................................... 3 2.2. Optional capabilities................................... 3 2.3. Position of address family in hierarchy................. 4 3. Module Structure ............................................ 4 3.1. IGMP Configuration and Operational state................ 4 3.2. MLD Configuration and Operational State................. 6 3.3. IGMP and MLD RPC........................................ 8 4. IGMP and MLD YANG Modules.................................... 9 5. Security Considerations..................................... 32 6. IANA Considerations ........................................ 32 7. Acknowledgments ............................................ 33 8. Contributing Authors........................................ 33 9. References ................................................. 33 9.1. Normative References................................... 33 9.2. Informative References................................. 34 1. Introduction YANG [RFC6020] [RFC7950] is a data definition language that was introduced to model the configuration and running state of a device managed using NETCONF [RFC6241]. YANG is now also being used as a component of wider management interfaces, such as CLIs. This document defines a YANG data model that can be used to configure and manage Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) devices. This model will support the core IGMP and MLD protocols, as well as many other features mentioned in separate IGMP and MLD RFCs. Non-core features are defined as optional in the provided data model. Liu & Guo, etc Expires April, 2018 [Page 2] Internet-Draft IGMP & MLD Yang Model October 2017 1.1. Requirements Language 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 [RFC2119]. 1.2. Terminology The terminology for describing YANG data models is found in [RFC6020] [RFC7950]. This document employs YANG tree diagrams, which are explained in [I- D.ietf-netmod-rfc6087bis]. 2. Design of Data model 2.1. Scope of model The model covers IGMPv1 [RFC1112], IGMPv2 [RFC2236], IGMPv3 [RFC3376] and MLDv1 [RFC2710], MLDv2 [RFC3810]. The configuration of IGMP and MLD features, and the operational state fields and RPC definitions are not all included in this document of the data model. This model can be extended, though the structure of what has been written may be taken as representative of the structure of the whole model. This model does not cover other IGMP and MLD related protocols such as IGMP/MLD Proxy [RFC4605] or IGMP/MLD Snooping [RFC4541] etc., these will be specified in separate documents. 2.2. Optional capabilities This model is designed to represent the capabilities of IGMP and MLD devices with various specifications, including some with basic subsets of the IGMP and MLD protocols. The main design goals of this document are that any major now-existing implementation may be said to support the basic model, and that the configuration of all implementations meeting the specification is easy to express through some combination of the features in the basic model and simple vendor augmentations. There is also value in widely-supported features being standardized, to save work for individual vendors, and so that mapping between different vendors' configuration is not needlessly complicated. Therefore these modules declare a number of features representing capabilities that not all deployed devices support. Liu & Guo, etc Expires April, 2018 [Page 3] Internet-Draft IGMP & MLD Yang Model October 2017 The extensive use of feature declarations should also substantially simplify the capability negotiation process for a vendor's IGMP and MLD implementations. On the other hand, operational state parameters are not so widely designated as features, as there are many cases where the defaulting of an operational state parameter would not cause any harm to the system, and it is much more likely that an implementation without native support for a piece of operational state would be able to derive a suitable value for a state variable that is not natively supported. For the same reason, wide constant ranges (for example, timer maximum and minimum) will be used in the model. It is expected that vendors will augment the model with any specific restrictions that might be required. Vendors may also extend the features list with proprietary extensions. 2.3. Position of address family in hierarchy The current document contains IGMP and MLD as separate schema branches in the structure. The reason for this is to make it easier for implementations which may optionally choose to support specific address families. And the names of objects may be different between the IPv4 (IGMP) and IPv6 (MLD) address families. 3. Module Structure 3.1. IGMP Configuration and Operational state The IGMP YANG model follows the Guidelines for YANG Module Authors (NMDA) [draft-dsdt-nmda-guidelines-01]. The IGMP module defines the routing-control-plane-protocol-wide configuration and operational state options separately in a three-level hierarchy as listed below: Global level: IGMP configuration and operational state attributes for the entire routing system. Interface-global: Only including configuration data nodes now. IGMP configuration attributes are applicable to all the interfaces whose interface-level corresponding attributes are not existing, with same attributes' value for these interfaces. Interface-level: IGMP configuration and operational state attributes specific to the given interface. Where fields are not genuinely essential to protocol operation, they are marked as optional. Some fields will be essential but have a default specified, so that they need not be configured explicitly. Liu & Guo, etc Expires April, 2018 [Page 4] Internet-Draft IGMP & MLD Yang Model October 2017 We define the IGMP model as a protocol-centric model , and the IGMP model augments "/rt:routing/rt:control-plane-protocols/ rt:control- plane-protocol" in [draft-acee-netmod-rfc8022bis-01] and would allow a single protocol instance per VRF. augment /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol: +--rw igmp +--rw global | +--rw enable? boolean {global-admin-enable}? | +--rw max-entries? uint32 {global-max-entries}? | +--rw max-groups? uint32 {global-max-groups}? | +--ro entries-count? uint32 | +--ro groups-count? uint32 | +--ro statistics | +--ro discontinuity-time? yang:date-and-time | +--ro error | | +--ro total? yang:counter64 | | +--ro query? yang:counter64 | | +--ro report? yang:counter64 | | +--ro leave? yang:counter64 | | +--ro checksum? yang:counter64 | | +--ro too-short? yang:counter64 | +--ro received | | +--ro total? yang:counter64 | | +--ro query? yang:counter64 | | +--ro report? yang:counter64 | | +--ro leave? yang:counter64 | +--ro sent | +--ro total? yang:counter64 | +--ro query? yang:counter64 | +--ro report? yang:counter64 | +--ro leave? yang:counter64 +--rw interfaces +--rw last-member-query-interval? uint16 +--rw max-groups-per-interface? uint32 {intf-max-groups}? +--rw query-interval? uint16 +--rw query-max-response-time? uint16 +--rw require-router-alert? boolean {intf-require-router-alert}? +--rw robustness-variable? uint8 +--rw version? uint8 +--rw interface* [interface-name] +--rw interface-name if:interface-ref +--rw enable? boolean {intf-admin-enable}? +--rw group-policy? string +--rw immediate-leave? empty {intf-immediate-leave}? +--rw last-member-query-interval? uint16 +--rw max-groups? uint32 {intf-max-groups}? +--rw max-group-sources? uint32 {intf-max-group-sources}? +--rw query-interval? uint16 Liu & Guo, etc Expires April, 2018 [Page 5] Internet-Draft IGMP & MLD Yang Model October 2017 +--rw query-max-response-time? uint16 +--rw require-router-alert? boolean {intf-require-router-alert}? +--rw robustness-variable? uint8 +--rw source-policy? string {intf-source-policy}? +--rw verify-source-subnet? empty {intf-verify-source-subnet}? +--rw explicit-tracking? boolean {intf-explicit-tracking}? +--rw exclude-lite? boolean {intf-exclude-lite}? +--rw version? uint8 +--rw join-group* inet:ipv4-address {intf-join-group}? +--rw ssm-map* [source-addr group-policy] {intf-ssm-map}? | +--rw source-addr ssm-map-ipv4-addr-type | +--rw group-policy string +--rw static-group* [group-addr source-addr] {intf-static-group}? | +--rw group-addr inet:ipv4-address | +--rw source-addr source-ipv4-addr-type +--ro oper-status? enumeration +--ro querier? inet:ipv4-address +--ro joined-group* inet:ipv4-address {intf-join-group}? +--ro group* [group-address] +--ro group-address inet:ipv4-address +--ro expire? uint32 +--ro filter-mode? enumeration +--ro up-time? uint32 +--ro last-reporter? inet:ipv4-address +--ro source* [source-address] +--ro source-address inet:ipv4-address +--ro expire? uint32 +--ro up-time? uint32 +--ro host-count? uint32 {intf-explicit-tracking}? +--ro last-reporter? inet:ipv4-address +--ro host* [host-address] {intf-explicit-tracking}? +--ro host-address inet:ipv4-address +--ro host-filter-mode? enumeration 3.2. MLD Configuration and Operational State The MLD YANG model uses the same structure as IGMP YANG model. The MLD module also defines the routing-control-plane-protocol-wide configuration and operational state options separately in a three- level hierarchy. augment /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol: +--rw mld +--rw global | +--rw enable? boolean {global-admin-enable}? | +--rw max-entries? uint32 {global-max-entries}? | +--rw max-groups? uint32 {global-max-groups}? | +--ro entries-count? uint32 Liu & Guo, etc Expires April, 2018 [Page 6] Internet-Draft IGMP & MLD Yang Model October 2017 | +--ro groups-count? uint32 | +--ro statistics | +--ro discontinuity-time? yang:date-and-time | +--ro error | | +--ro total? yang:counter64 | | +--ro query? yang:counter64 | | +--ro report? yang:counter64 | | +--ro leave? yang:counter64 | | +--ro checksum? yang:counter64 | | +--ro too-short? yang:counter64 | +--ro received | | +--ro total? yang:counter64 | | +--ro query? yang:counter64 | | +--ro report? yang:counter64 | | +--ro leave? yang:counter64 | +--ro sent | +--ro total? yang:counter64 | +--ro query? yang:counter64 | +--ro report? yang:counter64 | +--ro leave? yang:counter64 +--rw interfaces +--rw last-member-query-interval? uint16 +--rw max-groups-per-interface? uint32 {intf-max-groups}? +--rw query-interval? uint16 +--rw query-max-response-time? uint16 +--rw require-router-alert? boolean {intf-require-router-alert}? +--rw robustness-variable? uint8 +--rw version? uint8 +--rw interface* [interface-name] +--rw interface-name if:interface-ref +--rw enable? boolean {intf-admin-enable}? +--rw group-policy? string +--rw immediate-leave? empty {intf-immediate-leave}? +--rw last-member-query-interval? uint16 +--rw max-groups? uint32 {intf-max-groups}? +--rw max-group-sources? uint32 {intf-max-group-sources}? +--rw query-interval? uint16 +--rw query-max-response-time? uint16 +--rw require-router-alert? boolean {intf-require-router-alert}? +--rw robustness-variable? uint8 +--rw source-policy? string {intf-source-policy}? +--rw verify-source-subnet? empty {intf-verify-source-subnet}? +--rw explicit-tracking? boolean {intf-explicit-tracking}? +--rw exclude-lite? boolean {intf-exclude-lite}? +--rw version? uint8 +--rw join-group* inet:ipv6-address {intf-join-group}? +--rw ssm-map* [source-addr group-policy] {intf-ssm-map}? | +--rw source-addr ssm-map-ipv6-addr-type | +--rw group-policy string Liu & Guo, etc Expires April, 2018 [Page 7] Internet-Draft IGMP & MLD Yang Model October 2017 +--rw static-group* [group source-addr] {intf-static-group}? | +--rw group inet:ipv6-address | +--rw source-addr source-ipv6-addr-type +--ro oper-status? enumeration +--ro querier? inet:ipv6-address +--ro joined-group* inet:ipv6-address {intf-join-group}? +--ro group* [group-address] +--ro group-address inet:ipv6-address +--ro expire? uint32 +--ro filter-mode? enumeration +--ro up-time? uint32 +--ro last-reporter? inet:ipv6-address +--ro source* [source-address] +--ro source-address inet:ipv6-address +--ro expire? uint32 +--ro up-time? uint32 +--ro host-count? uint32 {intf-explicit-tracking}? +--ro last-reporter? inet:ipv6-address +--ro host* [host-address] {intf-explicit-tracking}? +--ro host-address inet:ipv6-address +--ro host-filter-mode? enumeration 3.3. IGMP and MLD RPC IGMP and MLD RPC clears the specified IGMP and MLD group membership. rpcs: +---x clear-igmp-groups {rpc-clear-groups}? | +---w input | +---w interface? string | +---w group? inet:ipv4-address | +---w source? inet:ipv4-address +---x clear-mld-groups {rpc-clear-groups}? +---w input +---w interface? string +---w group? inet:ipv6-address +---w source? inet:ipv6-address Liu & Guo, etc Expires April, 2018 [Page 8] Internet-Draft IGMP & MLD Yang Model October 2017 4. IGMP and MLD YANG Modules file "ietf-igmp-mld@2017-10-20.yang" module ietf-igmp-mld { namespace "urn:ietf:params:xml:ns:yang:ietf-igmp-mld"; // replace with IANA namespace when assigned prefix igmp-mld; import ietf-inet-types { prefix "inet"; } import ietf-yang-types { prefix "yang"; } import ietf-routing { prefix "rt"; } import ietf-interfaces { prefix "if"; } import ietf-ip { prefix ip; } organization "IETF PIM Working Group"; contact "WG Web: WG List: WG Chair: Stig Venaas WG Chair: Mike McBride Editor: Xufeng Liu Editor: Feng Guo Liu & Guo, etc Expires April, 2018 [Page 9] Internet-Draft IGMP & MLD Yang Model October 2017 Editor: Mahesh Sivakumar Editor: Pete McAllister Editor: Anish Peter "; description "The module defines a collection of YANG definitions common for IGMP and MLD."; revision 2017-10-20 { description "Updated yang data model for adding explicit-tracking and lightweight IGMPv3 and MLDv2 function."; reference "RFC XXXX: A YANG Data Model for IGMP and MLD"; } revision 2017-09-19 { description "Updated yang data model for NMDA version and errata."; reference "RFC XXXX: A YANG Data Model for IGMP and MLD"; } /* * Features */ feature global-admin-enable { description "Support global configuration to enable or disable protocol."; } feature global-interface-config { description "Support global configuration applied for all interfaces."; } feature global-max-entries { description "Support configuration of global max-entries."; } feature global-max-groups { description "Support configuration of global max-groups."; Liu & Guo, etc Expires April, 2018 [Page 10] Internet-Draft IGMP & MLD Yang Model October 2017 } feature intf-admin-enable { description "Support configuration of interface administrative enabling."; } feature intf-immediate-leave { description "Support configuration of interface immediate-leave."; } feature intf-join-group { description "Support configuration of interface join-group."; } feature intf-max-groups { description "Support configuration of interface max-groups."; } feature intf-max-group-sources { description "Support configuration of interface max-group-sources."; } feature intf-require-router-alert { description "Support configuration of interface require-router-alert."; } feature intf-source-policy { description "Support configuration of interface source policy."; } feature intf-ssm-map { description "Support configuration of interface ssm-map."; } feature intf-static-group { description "Support configuration of interface static-group."; } feature intf-verify-source-subnet { description Liu & Guo, etc Expires April, 2018 [Page 11] Internet-Draft IGMP & MLD Yang Model October 2017 "Support configuration of interface verify-source-subnet."; } feature intf-explicit-tracking { description "Support configuration of interface explicit-tracking hosts."; } feature intf-exclude-lite { description "Support configuration of interface exclude-lite."; } feature per-interface-config { description "Support per interface configuration."; } feature rpc-clear-groups { description "Support rpc's to clear groups."; } /* * Typedefs */ typedef ssm-map-ipv4-addr-type { type union { type enumeration { enum 'policy' { description "Source address is specified in SSM map policy."; } } type inet:ipv4-address; } description "Multicast source IP address type for SSM map."; } // source-ipv4-addr-type typedef ssm-map-ipv6-addr-type { type union { type enumeration { enum 'policy' { description "Source address is specified in SSM map policy."; } } type inet:ipv6-address; Liu & Guo, etc Expires April, 2018 [Page 12] Internet-Draft IGMP & MLD Yang Model October 2017 } description "Multicast source IP address type for SSM map."; } // source-ipv6-addr-type typedef source-ipv4-addr-type { type union { type enumeration { enum '*' { description "Any source address."; } } type inet:ipv4-address; } description "Multicast source IP address type."; } // source-ipv4-addr-type typedef source-ipv6-addr-type { type union { type enumeration { enum '*' { description "Any source address."; } } type inet:ipv6-address; } description "Multicast source IP address type."; } // source-ipv6-addr-type /* * Identities */ /* * Groupings */ grouping global-config-attributes { description "Global IGMP and MLD configuration."; leaf enable { if-feature global-admin-enable; type boolean; description "true to enable IGMP or MLD in the routing instance; false to disable IGMP or MLD in the routing instance."; Liu & Guo, etc Expires April, 2018 [Page 13] Internet-Draft IGMP & MLD Yang Model October 2017 } leaf max-entries { if-feature global-max-entries; type uint32; description "The maximum number of entries in IGMP or MLD."; } leaf max-groups { if-feature global-max-groups; type uint32; description "The maximum number of groups that IGMP or MLD can join."; } } // global-config-attributes grouping global-state-attributes { description "Global IGMP and MLD state attributes."; leaf entries-count { type uint32; config false; description "The number of entries in IGMP or MLD."; } leaf groups-count { type uint32; config false; description "The number of groups that IGMP or MLD can join."; } container statistics { config false; description "Global statistics."; leaf discontinuity-time { type yang:date-and-time; description "The time on the most recent occasion at which any one or more of the statistic counters suffered a discontinuity. If no such discontinuities have occurred since the last re-initialization of the local management subsystem, then this node contains the time the local management subsystem re-initialized itself."; } Liu & Guo, etc Expires April, 2018 [Page 14] Internet-Draft IGMP & MLD Yang Model October 2017 container error { description "Statistics of errors."; uses global-statistics-error; } container received { description "Statistics of received messages."; uses global-statistics-sent-received; } container sent { description "Statistics of sent messages."; uses global-statistics-sent-received; } } // statistics } // global-state-attributes grouping global-statistics-error { description "A grouping defining statistics attributes for errors."; uses global-statistics-sent-received; leaf checksum { type yang:counter64; description "The number of checksum errors."; } leaf too-short { type yang:counter64; description "The number of messages that are too short."; } } // global-statistics-error grouping global-statistics-sent-received { description "A grouping defining statistics attributes."; leaf total { type yang:counter64; description "The number of total messages."; } leaf query { type yang:counter64; description "The number of query messages."; } leaf report { type yang:counter64; description "The number of report messages."; Liu & Guo, etc Expires April, 2018 [Page 15] Internet-Draft IGMP & MLD Yang Model October 2017 } leaf leave { type yang:counter64; description "The number of leave messages."; } } // global-statistics-sent-received grouping interfaces-config-attributes { description "Configuration attributes applied to the interfaces whose per interface attributes are not existing."; leaf last-member-query-interval { type uint16 { range "1..65535"; } units seconds; default 1; description "Last Member Query Interval, which may be tuned to modify the leave latency of the network."; reference "RFC3376. Sec. 8.8."; } leaf max-groups-per-interface { if-feature intf-max-groups; type uint32; description "The maximum number of groups that IGMP or MLD can join."; } leaf query-interval { type uint16 { range "1..31744"; } units seconds; default 125; description "The Query Interval is the interval between General Queries sent by the Querier."; reference "RFC3376. Sec. 4.1.7, 8.2, 8.14.2."; } leaf query-max-response-time { type uint16 { range "1..65535"; } units seconds; Liu & Guo, etc Expires April, 2018 [Page 16] Internet-Draft IGMP & MLD Yang Model October 2017 default 10; description "Query maximum response time specifies the maximum time allowed before sending a responding report."; reference "RFC3376. Sec. 4.1.1, 8.3, 8.14.3."; } leaf require-router-alert { if-feature intf-require-router-alert; type boolean; default false; description "Protocol packets should contain router alert IP option."; } leaf robustness-variable { type uint8 { range "2..7"; } default 2; description "Querier's Robustness Variable allows tuning for the expected packet loss on a network."; reference "RFC3376. Sec. 4.1.6, 8.1, 8.14.1."; } } // interfaces-config-attributes grouping interfaces-config-attributes-igmp { description "interfaces configuration for IGMP."; uses interfaces-config-attributes; leaf version { type uint8 { range "1..3"; } description "IGMP version."; reference "RFC1112, RFC2236, RFC3376."; } } grouping interfaces-config-attributes-mld { description "interfaces configuration for MLD."; uses interfaces-config-attributes; leaf version { type uint8 { range "1..2"; Liu & Guo, etc Expires April, 2018 [Page 17] Internet-Draft IGMP & MLD Yang Model October 2017 } description "MLD version."; reference "RFC2710, RFC3810."; } } grouping interface-config-attributes-igmp { description "Per interface configuration for IGMP."; uses interface-config-attributes-igmp-mld; leaf version { type uint8 { range "1..3"; } description "IGMP version."; reference "RFC1112, RFC2236, RFC3376."; } leaf-list join-group { if-feature intf-join-group; type inet:ipv4-address; description "The router joins this multicast group on the interface."; } list ssm-map { if-feature intf-ssm-map; key "source-addr group-policy"; description "The policy for (*,G) mapping to (S,G)."; leaf source-addr { type ssm-map-ipv4-addr-type; description "Multicast source IP address."; } leaf group-policy { type string; description "Name of the access policy used to filter IGMP membership.A device can restrict the length and value of this name, possibly space and special characters are not allowed. "; } } list static-group { if-feature intf-static-group; key "group-addr source-addr"; description "A static multicast route, (*,G) or (S,G)."; Liu & Guo, etc Expires April, 2018 [Page 18] Internet-Draft IGMP & MLD Yang Model October 2017 leaf group-addr { type inet:ipv4-address; description "Multicast group IP address."; } leaf source-addr { type source-ipv4-addr-type; description "Multicast source IP address."; } } } // interface-config-attributes-igmp grouping interface-config-attributes-igmp-mld { description "Per interface configuration for both IGMP and MLD."; leaf enable { if-feature intf-admin-enable; type boolean; default false; description "true to enable IGMP or MLD on the interface; false to disable IGMP or MLD on the interface."; } leaf group-policy { type string; description "Name of the access policy used to filter IGMP or MLD membership.A device can restrict the length and value of this name, possibly space and special characters are not allowed."; } leaf immediate-leave { if-feature intf-immediate-leave; type empty; description "If present, IGMP or MLD perform an immediate leave upon receiving an IGMPv2 or MLDv1 leave message. If the router is IGMP-enabled or MLD-enabled, it sends an IGMP or MLD last member query with a last member query response time. However, the router does not wait for the response time before it prunes off the group."; } leaf last-member-query-interval { type uint16 { range "1..65535"; Liu & Guo, etc Expires April, 2018 [Page 19] Internet-Draft IGMP & MLD Yang Model October 2017 } units seconds; default 1; description "Last Member Query Interval, which may be tuned to modify the leave latency of the network."; reference "RFC3376. Sec. 8.8."; } leaf max-groups { if-feature intf-max-groups; type uint32; description "The maximum number of groups that IGMP ro MLD can join."; } leaf max-group-sources { if-feature intf-max-group-sources; type uint32; description "The maximum number of group sources."; } leaf query-interval { type uint16 { range "1..31744"; } units seconds; default 125; description "The Query Interval is the interval between General Queries sent by the Querier."; reference "RFC3376. Sec. 4.1.7, 8.2, 8.14.2."; } leaf query-max-response-time { type uint16 { range "1..65535"; } units seconds; default 10; description "Query maximum response time specifies the maximum time allowed before sending a responding report."; reference "RFC3376. Sec. 4.1.1, 8.3, 8.14.3."; } leaf require-router-alert { if-feature intf-require-router-alert; type boolean; Liu & Guo, etc Expires April, 2018 [Page 20] Internet-Draft IGMP & MLD Yang Model October 2017 description "Protocol packets should contain router alert IP option."; } leaf robustness-variable { type uint8 { range "2..7"; } default 2; description "Querier's Robustness Variable allows tuning for the expected packet loss on a network."; reference "RFC3376. Sec. 4.1.6, 8.1, 8.14.1."; } leaf source-policy { if-feature intf-source-policy; type string; description "Name of the access policy used to filter sources. A device can restrict the length and value of this name, possibly space and special characters are not allowed."; } leaf verify-source-subnet { if-feature intf-verify-source-subnet; type empty; description "If present, the interface accepts packets with matching source IP subnet only."; } leaf explicit-tracking { if-feature intf-explicit-tracking; type boolean; description "IGMP/MLD-based explicit membership tracking function for multicast routers and IGMP/MLD proxy devices supporting IGMPv3/MLDv2. The explicit membership tracking function contributes to saving network resources and shortening leave latency."; } leaf exclude-lite { if-feature intf-exclude-lite; type boolean; description "lightweight IGMPv3 and MLDv2 protocols, which simplify the standard versions of IGMPv3 and MLDv2."; reference "RFC5790"; } Liu & Guo, etc Expires April, 2018 [Page 21] Internet-Draft IGMP & MLD Yang Model October 2017 } // interface-config-attributes-igmp-mld grouping interface-config-attributes-mld { description "Per interface configuration for MLD."; uses interface-config-attributes-igmp-mld; leaf version { type uint8 { range "1..2"; } description "MLD version."; reference "RFC2710, RFC3810."; } leaf-list join-group { if-feature intf-join-group; type inet:ipv6-address; description "The router joins this multicast group on the interface."; } list ssm-map { if-feature intf-ssm-map; key "source-addr group-policy"; description "The policy for (*,G) mapping to (S,G)."; leaf source-addr { type ssm-map-ipv6-addr-type; description "Multicast source IPv6 address."; } leaf group-policy { type string; description "Name of the access policy used to filter MLD membership.A device can restrict the length and value of this name, possibly space and special characters are not allowed."; } } list static-group { if-feature intf-static-group; key "group source-addr"; description "A static multicast route, (*,G) or (S,G)."; leaf group { type inet:ipv6-address; Liu & Guo, etc Expires April, 2018 [Page 22] Internet-Draft IGMP & MLD Yang Model October 2017 description "Multicast group IPv6 address."; } leaf source-addr { type source-ipv6-addr-type; description "Multicast source IPv6 address."; } } } // interface-config-attributes-mld grouping interface-state-attributes-igmp { description "Per interface state attributes for IGMP."; uses interface-state-attributes-igmp-mld; leaf querier { type inet:ipv4-address; config false; description "The querier address in the subnet"; } leaf-list joined-group { if-feature intf-join-group; type inet:ipv4-address; config false; description "The routers that joined this multicast group."; } list group { key "group-address"; config false; description "Multicast group membership information that joined on the interface."; leaf group-address { type inet:ipv4-address; description "Multicast group address."; } uses interface-state-group-attributes-igmp-mld; leaf last-reporter { type inet:ipv4-address; description "The last host address which has sent the Liu & Guo, etc Expires April, 2018 [Page 23] Internet-Draft IGMP & MLD Yang Model October 2017 report to join the multicast group."; } list source { key "source-address"; description "List of multicast source information of the multicast group."; leaf source-address { type inet:ipv4-address; description "Multicast source address"; } uses interface-state-source-attributes-igmp-mld; leaf last-reporter { type inet:ipv4-address; description "The last host address which has sent the report to join the multicast source and group."; } list host { if-feature intf-explicit-tracking; key "host-address"; description "List of multicast membership hosts of the specific multicast source-group."; leaf host-address { type inet:ipv4-address; description "Multicast membership host address."; } leaf host-filter-mode { type enumeration { enum "include" { description "In include mode"; } enum "exclude" { description "In exclude mode."; } } description "Filter mode for a multicast membership host may be either include or exclude."; } }// list host } // list source Liu & Guo, etc Expires April, 2018 [Page 24] Internet-Draft IGMP & MLD Yang Model October 2017 } // list group } // interface-state-attributes-igmp grouping interface-state-attributes-igmp-mld { description "Per interface state attributes for both IGMP and MLD."; leaf oper-status { type enumeration { enum up { description "Ready to pass packets."; } enum down { description "The interface does not pass any packets."; } } config false; description "interface up or down state for IGMP or MLD protocol"; } } // interface-config-attributes-igmp-mld grouping interface-state-attributes-mld { description "Per interface state attributes for MLD."; uses interface-state-attributes-igmp-mld; leaf querier { type inet:ipv6-address; config false; description "The querier address in the subnet."; } leaf-list joined-group { if-feature intf-join-group; type inet:ipv6-address; config false; description "The routers that joined this multicast group."; } list group { key "group-address"; config false; description Liu & Guo, etc Expires April, 2018 [Page 25] Internet-Draft IGMP & MLD Yang Model October 2017 "Multicast group membership information that joined on the interface."; leaf group-address { type inet:ipv6-address; description "Multicast group address."; } uses interface-state-group-attributes-igmp-mld; leaf last-reporter { type inet:ipv6-address; description "The last host address which has sent the report to join the multicast group."; } list source { key "source-address"; description "List of multicast source information of the multicast group."; leaf source-address { type inet:ipv6-address; description "Multicast source address"; } uses interface-state-source-attributes-igmp-mld; leaf last-reporter { type inet:ipv6-address; description "The last host address which has sent the report to join the multicast source and group."; } list host { if-feature intf-explicit-tracking; key "host-address"; description "List of multicast membership hosts of the specific multicast source-group."; leaf host-address { type inet:ipv6-address; description "Multicast membership host address."; } leaf host-filter-mode { type enumeration { enum "include" { Liu & Guo, etc Expires April, 2018 [Page 26] Internet-Draft IGMP & MLD Yang Model October 2017 description "In include mode"; } enum "exclude" { description "In exclude mode."; } } description "Filter mode for a multicast membership host may be either include or exclude."; } }// list host } // list source } // list group } // interface-state-attributes-mld grouping interface-state-group-attributes-igmp-mld { description "Per interface state attributes for both IGMP and MLD groups."; leaf expire { type uint32; units seconds; description "The time left before multicast group state expires."; } leaf filter-mode { type enumeration { enum "include" { description "In include mode, reception of packets sent to the specified multicast address is requested only from those IP source addresses listed in the source-list parameter"; } enum "exclude" { description "In exclude mode, reception of packets sent to the given multicast address is requested from all IP source addresses except those listed in the source-list parameter."; } } description "Filter mode for a multicast group, may be either include or exclude."; } Liu & Guo, etc Expires April, 2018 [Page 27] Internet-Draft IGMP & MLD Yang Model October 2017 leaf up-time { type uint32; units seconds; description "The elapsed time since the device created multicast group record."; } } // interface-state-group-attributes-igmp-mld grouping interface-state-source-attributes-igmp-mld { description "Per interface state attributes for both IGMP and MLD source-group records."; leaf expire { type uint32; units seconds; description "The time left before multicast source-group state expires."; } leaf up-time { type uint32; units seconds; description "The elapsed time since the device created multicast source-group record."; } leaf host-count { if-feature intf-explicit-tracking; type uint32; description "The number of host addresses."; } } // interface-state-source-attributes-igmp-mld /* * Configuration and Operational state data nodes (NMDA version) */ augment "/rt:routing/rt:control-plane-protocols/rt:control-plane-protocol" { description "IGMP augmentation to routing control plane protocol configuration and state."; container igmp { description "IGMP operational state data."; container global { description Liu & Guo, etc Expires April, 2018 [Page 28] Internet-Draft IGMP & MLD Yang Model October 2017 "Global attributes."; uses global-config-attributes; uses global-state-attributes; } container interfaces { description "Containing a list of interfaces."; uses interfaces-config-attributes-igmp { if-feature global-interface-config; } list interface { key "interface-name"; description "List of IGMP interfaces."; leaf interface-name { type if:interface-ref; must "/if:interfaces/if:interface[if:name = current()]/" + "ip:ipv4" { description "The interface must have IPv4 enabled."; } description "Reference to an entry in the global interface list."; } uses interface-config-attributes-igmp { if-feature per-interface-config; } uses interface-state-attributes-igmp; } // interface } // interfaces } // igmp }//augment augment "/rt:routing/rt:control-plane-protocols/rt:control-plane-protocol" { description "MLD augmentation to routing control plane protocol configuration and state."; container mld { description "MLD operational state data."; container global { description "Global attributes."; Liu & Guo, etc Expires April, 2018 [Page 29] Internet-Draft IGMP & MLD Yang Model October 2017 uses global-config-attributes; uses global-state-attributes; } container interfaces { description "Containing a list of interfaces."; uses interfaces-config-attributes-mld { if-feature global-interface-config; } list interface { key "interface-name"; description "List of MLD interfaces."; leaf interface-name { type if:interface-ref; must "/if:interfaces/if:interface[if:name = current()]/" + "ip:ipv6" { description "The interface must have IPv6 enabled."; } description "Reference to an entry in the global interface list."; } uses interface-config-attributes-mld { if-feature per-interface-config; } uses interface-state-attributes-mld; } // interface } // interfaces } // mld } // augment /* * RPCs */ rpc clear-igmp-groups { if-feature rpc-clear-groups; description "Clears the specified IGMP cache entries."; input { leaf interface { type string; description "Name of the IGMP interface. If it is not specified, groups from all interfaces are Liu & Guo, etc Expires April, 2018 [Page 30] Internet-Draft IGMP & MLD Yang Model October 2017 cleared."; } leaf group { type inet:ipv4-address; description "Multicast group IPv4 address. If it is not specified, all IGMP group entries are cleared."; } leaf source { type inet:ipv4-address; description "Multicast source IPv4 address. If it is not specified, all IGMP source-group entries are cleared."; } } } // rpc clear-igmp-groups rpc clear-mld-groups { if-feature rpc-clear-groups; description "Clears the specified MLD cache entires."; input { leaf interface { type string; description "Name of the MLD interface. If it is not specified, groups from all interfaces are cleared."; } leaf group { type inet:ipv6-address; description "Multicast group IPv6 address. If it is not specified, all MLD group entries are cleared."; } leaf source { type inet:ipv6-address; description "Multicast source IPv6 address. If it is not specified, all MLD source-group entries are cleared."; } } } // rpc clear-mld-groups Liu & Guo, etc Expires April, 2018 [Page 31] Internet-Draft IGMP & MLD Yang Model October 2017 /* * Notifications */ } 5. Security Considerations The data model defined does not introduce any security implications. This document does not change any underlying security issues inherent in [RFC8022]. 6. IANA Considerations RFC Ed.: In this section, replace all occurrences of 'XXXX' with the actual RFC number (and remove this note). This document registers the following namespace URIs in the IETF XML registry [RFC3688]: -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang:ietf-igmp-mld Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- This document registers the following YANG modules in the YANG Module Names registry [RFC7950]: -------------------------------------------------------------------- name: ietf-igmp-mld namespace: urn:ietf:params:xml:ns:yang:ietf-igmp-mld prefix: igmp-mld reference: RFC XXXX -------------------------------------------------------------------- Liu & Guo, etc Expires April, 2018 [Page 32] Internet-Draft IGMP & MLD Yang Model October 2017 7. Acknowledgments The authors would like to thank Steve Baillargeon, Hu Fangwei, Robert Kebler, Tanmoy Kundu, and Stig Venaas for their valuable contributions. 8. Contributing Authors Yisong Liu Huawei Technologies Huawei Bld., No.156 Beiqing Rd. Beijing 100095 China Email: liuyisong@huawei.com 9. References 9.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC6020] Bjorklund, M., Ed., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, October 2010 [RFC6087] Bierman, A., "Guidelines for Authors and Reviewers of YANG Data Model Documents", RFC 6087, January 2011 [RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed., and A. Bierman, Ed., "Network Configuration Protocol (NETCONF)", RFC 6241, June 2011 [RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, August 2016 [RFC8022] Lhotka, L. and A. Lindem, "A YANG Data Model for Routing Management", RFC 8022, November 2016 [I-D.dsdt-nmda-guidelines] M. Bjorklund, J. Schoenwaelder, P. Shafer, K. Watsen, R. Wilton, "Guidelines for YANG Module Authors (NMDA)", draft-dsdt-nmda-guidelines-01, May 2017 [draft-bjorklund-netmod-rfc7223bis-00] M. Bjorklund, "A YANG Data Model for Interface Management", draft-bjorklund-netmod- rfc7223bis-00, August 2017 Liu & Guo, etc Expires April, 2018 [Page 33] Internet-Draft IGMP & MLD Yang Model October 2017 [draft-bjorklund-netmod-rfc7277bis-00] M. Bjorklund, "A YANG Data Model for IP Management", draft-bjorklund-netmod- rfc7277bis-00, August 2017 [I-D.ietf-netmod-rfc6087bis] Bierman, A., "Guidelines for Authors and Reviewers of YANG Data Model Documents", draft-ietf- netmod-rfc6087bis-14, September 2017 [I-D.acee-netmod-rfc8022bis] L. Lhotka, A. Lindem and Y.Qu, "A YANG Data Model for Routing Management (NDMA Version)", draft- acee-netmod-rfc8022bis-02, September 2017 9.2. Informative References [RFC1112] Deering, S., "Host extensions for IP multicasting", STD 5, RFC 1112, August 1989. [RFC2236] Fenner, W., "Internet Group Management Protocol, Version 2", RFC 2236, November 1997. [RFC2710] Deering, S., Fenner, W., and B. Haberman, "Multicast Listener Discovery (MLD) for IPv6", RFC 2710, October 1999. [RFC3376] Cain, B., Deering, S., Kouvelas, I., Fenner, B., and A. Thyagarajan, "Internet Group Management Protocol, Version 3", RFC 3376, October 2002. [RFC3810] Vida, R. and L. Costa, "Multicast Listener Discovery Version 2 (MLDv2) for IPv6", RFC 3810, June 2004. [RFC4541] M. Christensen, K. Kimball and F. Solensky, "Considerations for Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Snooping Switches", RFC 4541, May 2006. [RFC4605] B. Fenner, H. He, B. Haberman, and H. Sandick, "Internet Group Management Protocol (IGMP) / Multicast Listener Discovery (MLD)-Based Multicast Forwarding ("IGMP/MLD Proxying")", RFC 4605, August 2006. [RFC5790] H. Liu, W. Cao and H. Asaeda, "Lightweight Internet Group Management Protocol Version 3 (IGMPv3) and Multicast Listener Discovery Version 2 (MLDv2) Protocols", RFC 5790, February 2010 Liu & Guo, etc Expires April, 2018 [Page 34] Internet-Draft IGMP & MLD Yang Model October 2017 Authors' Addresses Xufeng Liu Jabil 8281 Greensboro Drive, Suite 200 McLean VA 22102 USA EMail: Xufeng_Liu@jabil.com Feng Guo Huawei Huawei Bld., No.156 Beiqing Rd. Beijing 100095 China Email: guofeng@huawei.com Mahesh Sivakumar Cisco Systems, Inc. 510 McCarthy Boulevard Milpitas, California 95035 USA Email: masivaku@cisco.com Pete McAllister Metaswitch Networks 100 Church Street Enfield EN2 6BQ UK EMail: pete.mcallister@metaswitch.com Anish Peter Individual EMail: anish.ietf@gmail.com Liu & Guo, etc Expires April, 2018 [Page 35]