PIM Working Group X. Liu Internet-Draft Ericsson Intended status: Standards Track P. McAllister Expires: April 21, 2016 Metaswitch Networks A. Peter Juniper Networks October 19, 2015 A YANG data model for Protocol-Independent Multicast (PIM) draft-mcallister-pim-yang-01 Abstract This document defines a YANG data model that can be used to configure Protocol Independent Multicast (PIM) devices. 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/. 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." This Internet-Draft will expire on April 21, 2016. Copyright Notice Copyright (c) 2015 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 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. Liu, et al. Expires April 21, 2016 [Page 1] Internet-Draft PIM YANG October 2015 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. Top-level structure . . . . . . . . . . . . . . . . . . . 4 2.4. Position of address family in hierarchy . . . . . . . . . 5 3. Unresolved Issues . . . . . . . . . . . . . . . . . . . . . . 5 3.1. Current status of work in progress . . . . . . . . . . . 5 3.2. Group range mappings . . . . . . . . . . . . . . . . . . 5 3.3. Issues blocked on other model designers . . . . . . . . . 6 4. Module Structure . . . . . . . . . . . . . . . . . . . . . . 6 4.1. PIM base module . . . . . . . . . . . . . . . . . . . . . 6 4.2. PIM RP module . . . . . . . . . . . . . . . . . . . . . . 10 4.3. PIM-SM module . . . . . . . . . . . . . . . . . . . . . . 12 4.4. PIM-DM module . . . . . . . . . . . . . . . . . . . . . . 13 4.5. PIM-BIDIR module . . . . . . . . . . . . . . . . . . . . 14 5. PIM YANG Modules . . . . . . . . . . . . . . . . . . . . . . 15 5.1. PIM base module . . . . . . . . . . . . . . . . . . . . . 15 5.2. PIM RP module . . . . . . . . . . . . . . . . . . . . . . 34 5.3. PIM-SM module . . . . . . . . . . . . . . . . . . . . . . 48 5.4. PIM-DM module . . . . . . . . . . . . . . . . . . . . . . 53 5.5. PIM-BIDIR module . . . . . . . . . . . . . . . . . . . . 56 6. TODO list . . . . . . . . . . . . . . . . . . . . . . . . . . 59 7. Security Considerations . . . . . . . . . . . . . . . . . . . 60 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 60 9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 60 10. References . . . . . . . . . . . . . . . . . . . . . . . . . 60 10.1. Normative References . . . . . . . . . . . . . . . . . . 60 10.2. Informative References . . . . . . . . . . . . . . . . . 60 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 61 1. Introduction YANG [RFC6020] [RFC6087] 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 draft YANG data model that can be used to configure and manage Protocol-Independent Multicast (PIM) devices. Currently this model is incomplete, but it will support the core PIM protocol, as well as many other features mentioned in separate PIM RFCs. Non-core features are defined as optional in the provided data model. Liu, et al. Expires April 21, 2016 [Page 2] Internet-Draft PIM YANG October 2015 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 BCP 14, RFC 2119 [RFC2119]. 1.2. Terminology The terminology for describing YANG data models is found in [RFC6020]. This draft 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 PIM Sparse Mode [RFC4601], including the Source- Specfic subset [RFC3569], Dense Mode [RFC3973], and Bi-directional PIM [RFC5015]. The PIM extensions represented in the model include BSR [RFC5059] and Anycast RP [RFC4610]. The representation of some of these features is not completely specified in this draft of the data model. This model is being circulated in its current form for early oversight and review of the basic hierarchy. The operational state fields and notifications of this model are also incomplete, though the structure of what has been written may be taken as representative of the structure of the model when complete. This model does not cover other multicast protocols such as IGMP/MLD, MSDP, mVPN, or m-LDP in-band signalling. It does not cover any configuration required to generate the MRIB. These will be covered by future Internet Drafts. 2.2. Optional capabilities This model is designed to represent the capabilities of PIM devices with various specifications, including some with basic subsets of the PIM protocol. The main design goals of this draft are that any major now-existing implementation may be said to support the base model, and that the configuration of all implementations meeting the Liu, et al. Expires April 21, 2016 [Page 3] Internet-Draft PIM YANG October 2015 specification is easy to express through some combination of the features in the base 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. The extensive use of feature declarations should also substantially simplify the capability negotiation process for a vendor's PIM implementation. 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 maxima and minima) 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. Top-level structure This model defines several separate modules for modelling PIM configuration, defined below. Again, this separation will make it easier to express the specific capabilities of a PIM device. The hierarchy of PIM configuration is designed so that objects that are only relevant for one situation or feature are collected in a container for that feature. For example, the configuration for PIM- SM that is not relevant for an SSM-only implementation is collected in an ASM container. 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 they need not be explicitly configured. This module structure also applies, where applicable, to the operational state and notifications of the model. Liu, et al. Expires April 21, 2016 [Page 4] Internet-Draft PIM YANG October 2015 2.4. Position of address family in hierarchy The current draft contains address-family as a node in the hierarchy multiple times: both under the interface list, and under the PIM instance. This is similar to the IS-IS yang draft model. The reasoning for this is to make it easier for implementations in which configuration options are not supported for specific address families. For these implementations, the restriction that interface configuration must be address-family independent must either be expressed as a vendor augmentation of an address-family-independent parameter above the address-family level, or by a constraint on the base model objects of a form similar to: must ". = ../../address-family[address-family='ipv4']/ interface[interface=current()/sibling:interface]/dr-priority" { error-app-tag dr-priority-mismatch; error-message "Error: IPv6 DR priority must match IPv4 DR priority "; } 3. Unresolved Issues 3.1. Current status of work in progress The model so far details how the PIM modules interact and covers the higher levels of their hierarchy. Some details of interface configuration, RP configuration, and PIM-ASM-specific parameters are also complete. For a list of the most substantial areas still to cover, please see the "TODO list" section below. 3.2. Group range mappings There is currently no convenient way in the operational state model to map from a group address to the PIM mode and RP information that it will be forwarded according to, which complicates reasoning about the running state and the diagnosis of conflicting policy configuration. A hypothetical group range state reporting object indexed by group range would be desirable for this purpose, but would be inconvenient for many implementations that index the relevant information on RP address (not applicable for DM or unroutable group-ranges), and difficult to express directly in YANG (as it is difficult to express a container indexed on an arbitrary, proprietary policy structure). Liu, et al. Expires April 21, 2016 [Page 5] Internet-Draft PIM YANG October 2015 3.3. Issues blocked on other model designers Some questions must be resolved with reference to other yang models, and so the resolution may be blocked on a decision from another body. Currently these issues are: 1. The position of BFD in the configuration; does the BFD model augment various different protocols, or do the protocols have to augment themselves individually to support BFD? 2. The abstract concepts of a "set of IP addresses" or "set of IP prefixes", as represented in implementations by prefixes, ACLs or policy statements, is a general concept out of the scope of this document. It will presumably have a yang data-type the instantiation of which is vendor-specific. 4. Module Structure 4.1. PIM base module The PIM base module defines the router-wide configuration options not specific to any PIM mode, and is included by the other modules. There are a couple of things worth mentioning here regarding where the PIM model fits in the overall routing hierarchy: 1. Our current direction is to agree to a routing-instance-centric (VRF) model as opposed to protocol-centric mainly because it fits well into the routing-instance model, and it is easier to map from the VRF-centric to the protocol-centric than the other way around due to forward references. 2. The PIM base model will augment "/rt:routing/rt:routing-instance/ rt:routing-protocols:" as opposed to augmenting "/rt:routing/ rt:routing-instance/rt:routing-protocols:/rt:routing-protocol" as the latter would allow multiple protocol instances per VRF, which does not make sense for PIM. module: ietf-pim-base augment /rt:routing/rt:routing-instance/rt:routing-protocols: +--rw pim +--rw graceful-restart | +--rw enabled? boolean | +--rw duration? uint16 +--rw address-family* [address-family] | +--rw address-family identityref | +--rw graceful-restart | +--rw enabled? boolean Liu, et al. Expires April 21, 2016 [Page 6] Internet-Draft PIM YANG October 2015 | +--rw duration? uint16 +--rw interfaces +--rw interface* [interface] +--rw interface if:interface-ref +--rw address-family* [address-family] +--rw address-family identityref +--rw dr-priority? uint32 {intf-dr-priority}? +--rw hello-interval? uint16 {intf-hello-interval}? +--rw (hello-holdtime-or-multipler)? | +--:(holdtime) {intf-hello-holdtime}? | | +--rw hello-holdtime? uint16 | +--:(multipler) {intf-hello-multipler}? | +--rw hello-multipler? uint8 +--rw jp-interval? uint16 {intf-jp-interval}? +--rw (jp-holdtime-or-multipler)? | +--:(holdtime) {intf-jp-holdtime}? | | +--rw jp-holdtime? uint16 | +--:(multipler) {intf-jp-multipler}? | +--rw jp-multipler? uint8 +--rw propagation-delay? uint16 {intf-propagation-delay}? +--rw override-interval? uint16 {intf-override-interval}? augment /rt:routing-state/rt:routing-instance/rt:routing-protocols: +--ro pim +--ro address-family* [address-family] | +--ro address-family identityref | +--ro statistics | | +--ro discontinuity-time? yang:date-and-time | | +--ro error | | | +--ro assert? yang:counter32 | | | +--ro bsr? yang:counter32 | | | +--ro candidate-rp-advertisement? yang:counter32 | | | +--ro hello? yang:counter32 | | | +--ro join-prune? yang:counter32 | | | +--ro register? yang:counter32 | | | +--ro register-stop? yang:counter32 | | | +--ro state-refresh? yang:counter32 | | +--ro queue | | | +--ro size? uint32 | | | +--ro overflow? yang:counter32 | | +--ro received | | | +--ro assert? yang:counter32 | | | +--ro bsr? yang:counter32 | | | +--ro candidate-rp-advertisement? yang:counter32 | | | +--ro hello? yang:counter32 | | | +--ro join-prune? yang:counter32 | | | +--ro register? yang:counter32 | | | +--ro register-stop? yang:counter32 | | | +--ro state-refresh? yang:counter32 Liu, et al. Expires April 21, 2016 [Page 7] Internet-Draft PIM YANG October 2015 | | +--ro sent | | +--ro assert? yang:counter32 | | +--ro bsr? yang:counter32 | | +--ro candidate-rp-advertisement? yang:counter32 | | +--ro hello? yang:counter32 | | +--ro join-prune? yang:counter32 | | +--ro register? yang:counter32 | | +--ro register-stop? yang:counter32 | | +--ro state-refresh? yang:counter32 | +--ro topology-tree-info | +--ro ipv4-route* [group source-addr is-rpt] | | +--ro group inet:ipv4-address | | +--ro source-addr union | | +--ro is-rpt boolean | | +--ro expire? uint32 | | +--ro incoming-interface? if:interface-ref | | +--ro mode? pim-mode | | +--ro msdp-learned? boolean | | +--ro rp-address? inet:ip-address | | +--ro rpf-neighbor? inet:ip-address | | +--ro spt-bit? boolean | | +--ro up-time? uint32 | | +--ro outgoing-interface* [name] | | +--ro name if:interface-ref | | +--ro expire? yang:timeticks | | +--ro up-time? yang:timeticks | | +--ro jp-state? enumeration | +--ro ipv6-route* [group source-addr is-rpt] | +--ro group inet:ipv6-address | +--ro source-addr union | +--ro is-rpt boolean | +--ro expire? uint32 | +--ro incoming-interface? if:interface-ref | +--ro mode? pim-mode | +--ro msdp-learned? boolean | +--ro rp-address? inet:ip-address | +--ro rpf-neighbor? inet:ip-address | +--ro spt-bit? boolean | +--ro up-time? uint32 | +--ro outgoing-interface* [name] | +--ro name if:interface-ref | +--ro expire? yang:timeticks | +--ro up-time? yang:timeticks | +--ro jp-state? enumeration +--ro interfaces +--ro interface* [interface] +--ro interface if:interface-ref +--ro address-family* [address-family] Liu, et al. Expires April 21, 2016 [Page 8] Internet-Draft PIM YANG October 2015 +--ro address-family identityref +--ro dr-priority? uint32 {intf-dr-priority}? +--ro hello-interval? uint16 {intf-hello-interval}? +--ro (hello-holdtime-or-multipler)? | +--:(holdtime) {intf-hello-holdtime}? | | +--ro hello-holdtime? uint16 | +--:(multipler) {intf-hello-multipler}? | +--ro hello-multipler? uint8 +--ro jp-interval? uint16 {intf-jp-interval}? +--ro (jp-holdtime-or-multipler)? | +--:(holdtime) {intf-jp-holdtime}? | | +--ro jp-holdtime? uint16 | +--:(multipler) {intf-jp-multipler}? | +--ro jp-multipler? uint8 +--ro propagation-delay? uint16 {intf-propagation-delay}? +--ro override-interval? uint16 {intf-override-interval}? +--ro ipv4 | +--ro address* inet:ipv4-address | +--ro dr-addr? inet:ipv4-address +--ro ipv6 | +--ro address* inet:ipv6-address | +--ro dr-addr? inet:ipv6-address +--ro oper-status? enumeration +--ro hello-expire? uint32 +--ro neighbor-ipv4* [address] | +--ro address inet:ipv4-address | +--ro bfd-status? enumeration | +--ro expire? uint32 | +--ro dr-priority? uint32 | +--ro gen-id? uint32 | +--ro up-time? uint32 +--ro neighbor-ipv6* [address] +--ro address inet:ipv6-address +--ro bfd-status? enumeration +--ro expire? uint32 +--ro dr-priority? uint32 +--ro gen-id? uint32 +--ro up-time? uint32 notifications: +---n pim-neighbor-event | +--ro event-type? neighbor-event-type | +--ro routing-instance-state-ref? rt:routing-instance-state-ref | +--ro interface-state-ref? leafref | +--ro interface-af-state-ref? leafref | +--ro neighbor-ipv4-state-ref? leafref | +--ro neighbor-ipv6-state-ref? leafref | +--ro up-time? uint32 +---n pim-interface-event Liu, et al. Expires April 21, 2016 [Page 9] Internet-Draft PIM YANG October 2015 +--ro event-type? interface-event-type +--ro routing-instance-state-ref? rt:routing-instance-state-ref +--ro interface-state-ref? leafref +--ro ipv4 | +--ro address* inet:ipv4-address | +--ro dr-addr? inet:ipv4-address +--ro ipv6 +--ro address* inet:ipv6-address +--ro dr-addr? inet:ipv6-address 4.2. PIM RP module The PIM RP module contains configuration information scoped to RPs or ranges of group addresses. This does not belong in the hierarchy under any PIM mode, but is augmented by the individual mode-specific modules as appropriate. module: ietf-pim-rp augment /rt:routing/rt:routing-instance/rt:routing-protocols/pim-base:pim /pim-base:address-family: +--rw rp +--rw static-rp | +--rw ipv4-rp* [ipv4-addr] | | +--rw ipv4-addr inet:ipv4-address | +--rw ipv6-rp* [ipv6-addr] | +--rw ipv6-addr inet:ipv6-address +--rw bsr {bsr}? +--rw bsr-candidate! | +--rw (interface-or-address)? | | +--:(interface) {candidate-interface}? | | | +--rw interface if:interface-ref | | +--:(ipv4-address) {candidate-ipv4}? | | | +--rw ipv4-address inet:ipv4-address | | +--:(ipv6-address) {candidate-ipv6}? | | +--rw ipv6-address inet:ipv6-address | +--rw hash-mask-length uint8 | +--rw priority uint8 +--rw rp-candidate-interface* [interface] {candidate-interface}? | +--rw interface if:interface-ref | +--rw policy? string | +--rw mode? identityref +--rw rp-candidate-ipv4-address* [ipv4-address] {candidate-ipv4}? | +--rw ipv4-address inet:ipv4-address | +--rw policy? string | +--rw mode? identityref Liu, et al. Expires April 21, 2016 [Page 10] Internet-Draft PIM YANG October 2015 +--rw rp-candidate-ipv6-address* [ipv6-address] {candidate-ipv6}? +--rw ipv6-address inet:ipv6-address +--rw policy? string +--rw mode? identityref augment /rt:routing-state/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family: +--ro rp +--ro bsr {bsr}? | +--ro bsr-candidate! | | +--ro (interface-or-address)? | | | +--:(interface) {candidate-interface}? | | | | +--ro interface if:interface-ref | | | +--:(ipv4-address) {candidate-ipv4}? | | | | +--ro ipv4-address inet:ipv4-address | | | +--:(ipv6-address) {candidate-ipv6}? | | | +--ro ipv6-address inet:ipv6-address | | +--ro hash-mask-length uint8 | | +--ro priority uint8 | +--ro rp-candidate-interface* [interface] {candidate-interface}? | | +--ro interface if:interface-ref | | +--ro policy? string | | +--ro mode? identityref | +--ro rp-candidate-ipv4-address* [ipv4-address] {candidate-ipv4}? | | +--ro ipv4-address inet:ipv4-address | | +--ro policy? string | | +--ro mode? identityref | +--ro rp-candidate-ipv6-address* [ipv6-address] {candidate-ipv6}? | | +--ro ipv6-address inet:ipv6-address | | +--ro policy? string | | +--ro mode? identityref | +--ro bsr | | +--ro addr? inet:ip-address | | +--ro hash-mask-length? uint8 | | +--ro priority? uint8 | | +--ro up-time? uint32 | +--ro (election-state)? {bsr-election-state}? | | +--:(candidate) | | | +--ro candidate-bsr-state? enumeration | | +--:(non-candidate) | | +--ro non-candidate-bsr-state? enumeration | +--ro bsr-next-bootstrap? uint16 | +--ro rp | | +--ro rp-address? inet:ip-address | | +--ro group-policy? string | | +--ro up-time? uint32 | +--ro rp-candidate-next-advertisement? uint16 +--ro rp-list | +--ro ipv4-rp* [ipv4-addr] Liu, et al. Expires April 21, 2016 [Page 11] Internet-Draft PIM YANG October 2015 | | +--ro ipv4-addr inet:ipv4-address | | +--ro info-source-addr? inet:ipv4-address | | +--ro info-source-type? enumeration | | +--ro up-time? uint32 | | +--ro expire? uint16 | +--ro ipv6-rp* [ipv6-addr] | +--ro ipv6-addr inet:ipv6-address | +--ro info-source-addr? inet:ipv6-address | +--ro info-source-type? enumeration | +--ro up-time? uint32 | +--ro expire? uint16 +--ro rp-mappings +--ro ipv4-rp* [group rp-addr] | +--ro group inet:ipv4-prefix | +--ro rp-addr inet:ipv4-address | +--ro info-source-addr? inet:ipv4-address | +--ro info-source-type? enumeration | +--ro up-time? uint32 | +--ro expire? uint16 +--ro ipv6-rp* [group rp-addr] +--ro group inet:ipv6-prefix +--ro rp-addr inet:ipv6-address +--ro info-source-addr? inet:ipv6-address +--ro info-source-type? enumeration +--ro up-time? uint32 +--ro expire? uint16 notifications: +---n pim-rp-event +--ro event-type? rp-event-type +--ro routing-instance-state-ref? rt:routing-instance-state-ref +--ro instance-af-state-ref? leafref +--ro group? inet:ip-address +--ro rp-address? inet:ip-address +--ro is-rpt? boolean +--ro mode? pim-base:pim-mode +--ro message-origin? inet:ip-address 4.3. PIM-SM module This module covers Sparse Mode configuration, including PIM-ASM and PIM-SSM. Liu, et al. Expires April 21, 2016 [Page 12] Internet-Draft PIM YANG October 2015 module: ietf-pim-sm augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family: +--rw sm +--rw asm | +--rw anycast-rp! | | +--rw ipv4 | | | +--rw ipv4-anycast-rp* [anycast-addr rp-addr] | | | +--rw anycast-addr inet:ipv4-address | | | +--rw rp-addr inet:ipv4-address | | +--rw ipv6 | | +--rw ipv6-anycast-rip* [anycast-addr rp-addr] | | +--rw anycast-addr inet:ipv6-address | | +--rw rp-addr inet:ipv6-address | +--rw spt-switch | +--rw infinity! {spt-switch-infinity}? | +--rw policy-name? string {spt-switch-policy}? +--rw ssm! +--rw range-poligy? string augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:interfaces/pim-base:interface/ pim-base:address-family: +--rw sm! +--rw passive? empty augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family/pim-rp:rp/pim-rp:static-rp/ pim-rp:ipv4-rp: +--rw sm! +--rw policy-name? string +--rw override? boolean {static-rp-override}? augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family/pim-rp:rp/pim-rp:static-rp/ pim-rp:ipv6-rp: +--rw sm! +--rw policy-name? string +--rw override? boolean {static-rp-override}? augment /rt:routing-state/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family: +--ro sm 4.4. PIM-DM module This module will cover Dense Mode configuration. Liu, et al. Expires April 21, 2016 [Page 13] Internet-Draft PIM YANG October 2015 module: ietf-pim-dm augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family: +--rw dm! augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:interfaces/pim-base:interface/ pim-base:address-family: +--rw dm! augment /rt:routing-state/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family: +--ro dm 4.5. PIM-BIDIR module This module will cover Bidirectional PIM configuration. module: ietf-pim-bidir augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family: +--rw bidir augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:interfaces/pim-base:interface/ pim-base:address-family: +--rw bidir! +--rw df-election {intf-df-election}? +--rw offer-interval? uint32 +--rw backoff-interval? uint32 +--rw offer-multipler? uint8 augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family/pim-rp:rp/pim-rp:static-rp/ pim-rp:ipv4-rp: +--rw bidir! +--rw policy-name? string +--rw override? boolean {static-rp-override}? augment /rt:routing/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family/pim-rp:rp/pim-rp:static-rp/ pim-rp:ipv6-rp: +--rw bidir! +--rw policy-name? string +--rw override? boolean {static-rp-override}? augment /rt:routing-state/rt:routing-instance/rt:routing-protocols/ pim-base:pim/pim-base:address-family: +--ro bidir Liu, et al. Expires April 21, 2016 [Page 14] Internet-Draft PIM YANG October 2015 5. PIM YANG Modules 5.1. PIM base module module ietf-pim-base { namespace "urn:ietf:params:xml:ns:yang:ietf-pim-base"; // replace with IANA namespace when assigned prefix pim-base; import ietf-inet-types { prefix "inet"; } import ietf-yang-types { prefix "yang"; } import ietf-interfaces { prefix "if"; } import ietf-routing { prefix "rt"; } organization "IETF PIM Working Group"; contact "WG Web: WG List: WG Chair: Stig Venaas WG Chair: Mike McBride Editors: "; description "The module defines a collection of YANG definitions common for all PIM modes."; revision 2015-10-08 { Liu, et al. Expires April 21, 2016 [Page 15] Internet-Draft PIM YANG October 2015 description "Initial revision."; reference "RFC XXXX: A YANG Data Model for PIM"; } /* * Features */ feature global-graceful-restart { description "Global configuraiont for graceful restart support as per RFC5306."; } feature intf-dr-priority { description "Support configuration of interface dr priority."; } feature intf-hello-holdtime { description "Support configuration of interface hello holdtime."; } feature intf-hello-interval { description "Support configuration of interface hello interval."; } feature intf-hello-multipler { description "Support configuration of interface hello multipler."; } feature intf-jp-interval { description "Support configuration of interface join prune interval."; } feature intf-jp-holdtime { description "Support configuration of interface join prune holdtime."; } feature intf-jp-multipler { description "Support configuration of interface join prune multipler."; Liu, et al. Expires April 21, 2016 [Page 16] Internet-Draft PIM YANG October 2015 } feature intf-propagation-delay { description "Support configuration of interface propagation delay."; } feature intf-override-interval { description "Support configuration of interface override interval."; } feature per-af-graceful-restart { description "Per AF configuraiont for graceful restart support as per RFC5306."; } /* * Typedefs */ typedef interface-event-type { type enumeration { enum up { description "Neighbor status changed to up."; } enum down { description "Neighbor status changed to down."; } enum new-dr { description "A new DR was elected on the connected network."; } enum new-df { description "A new DF was elected on the connected network."; } } description "Operational status event type for notifications."; } typedef neighbor-event-type { type enumeration { enum up { description "Neighbor status changed to up."; Liu, et al. Expires April 21, 2016 [Page 17] Internet-Draft PIM YANG October 2015 } enum down { description "Neighbor status changed to down."; } } description "Operational status event type for notifications."; } typedef pim-mode { type enumeration { enum none { description "PIM is not operating."; } enum ssm { description "Source-Specific Multicast (SSM) with PIM Sparse Mode."; } enum asm { description "Any Source Multicast (ASM) with PIM Sparse Mode."; } enum bidir { description "Bidirectional PIM."; } enum dm { description "PIM Dense Mode."; } enum other { description "Any other PIM mode."; } } description "The PIM mode in which a group is operating."; } typedef timer-value { type union { type uint16; type enumeration { enum "infinity" { description "The timer is set to infinity."; } enum "no-expiry" { Liu, et al. Expires April 21, 2016 [Page 18] Internet-Draft PIM YANG October 2015 description "The timer is not set."; } } } units seconds; description "Timer value type."; } // timer-value /* * Identities */ /* * Groupings */ grouping global-attributes { description "A Grouping defining global configuration attributes."; uses graceful-restart-container { if-feature global-graceful-restart; } } // global-attributes grouping graceful-restart-container { description "A grouping defining a container of graceful restart attributes."; container graceful-restart { leaf enabled { type boolean; description "Enable or disable graceful restart."; } leaf duration { type uint16; units "seconds"; description "Maximum time for graceful restart to finish."; } description "Container of graceful restart attributes."; } } // graceful-restart-container grouping interface-config-attributes { description "A grouping defining interface attributes."; leaf dr-priority { Liu, et al. Expires April 21, 2016 [Page 19] Internet-Draft PIM YANG October 2015 if-feature intf-dr-priority; type uint32; description "DR priority"; } leaf hello-interval { if-feature intf-hello-interval; type uint16; description "Hello interval"; } choice hello-holdtime-or-multipler { description "Use holdtime or multipler"; case holdtime { if-feature intf-hello-holdtime; leaf hello-holdtime { type uint16; description "Hello holdtime"; } } case multipler { if-feature intf-hello-multipler; leaf hello-multipler { type uint8; description "Hello multipler"; } } } leaf jp-interval { if-feature intf-jp-interval; type uint16; description "Join prune interval"; } choice jp-holdtime-or-multipler { description "Use holdtime or multipler"; case holdtime { if-feature intf-jp-holdtime; leaf jp-holdtime { type uint16; description "Join prune holdtime"; } } case multipler { if-feature intf-jp-multipler; leaf jp-multipler { type uint8; description "Join prune multipler"; } } } Liu, et al. Expires April 21, 2016 [Page 20] Internet-Draft PIM YANG October 2015 leaf propagation-delay { if-feature intf-propagation-delay; type uint16; description "Propagation description"; } leaf override-interval { if-feature intf-override-interval; type uint16; description "Override interval"; } } // interface-config-attributes grouping interface-state-attributes { description "A grouping defining interface attributes."; container ipv4 { when "../../../address-family = 'rt:ipv4'" { description "Only applicable to ipv4 address family."; } description ""; leaf-list address { type inet:ipv4-address; description ""; } leaf dr-addr { type inet:ipv4-address; description ""; } } container ipv6 { when "../../../address-family = 'rt:ipv6'" { description "Only applicable to ipv6 address family."; } description ""; leaf-list address { type inet:ipv6-address; description ""; } leaf dr-addr { type inet:ipv6-address; description ""; } } uses interface-state-af-attributes; } // interface-state-attributes Liu, et al. Expires April 21, 2016 [Page 21] Internet-Draft PIM YANG October 2015 grouping interface-state-af-attributes { description "A grouping defining interface per af attributes."; leaf oper-status { type enumeration { enum up { description "Ready to pass packets."; } enum down { description "The interface does not pass any packets."; } } description ""; } leaf hello-expire { type uint32; description "Hello interval exiration time."; } list neighbor-ipv4 { when "../../../address-family = 'rt:ipv4'" { description "Only applicable to ipv4 address family."; } key "address"; description ""; leaf address { type inet:ipv4-address; description ""; } uses neighbor-state-af-attributes; } // list neighbor-ipv4 list neighbor-ipv6 { when "../../../address-family = 'rt:ipv6'" { description "Only applicable to ipv6 address family."; } key "address"; description ""; leaf address { type inet:ipv6-address; description ""; } Liu, et al. Expires April 21, 2016 [Page 22] Internet-Draft PIM YANG October 2015 uses neighbor-state-af-attributes; } // list neighbor-ipv4 } // interface-state-af-attributes grouping multicast-route-attributes { description "A grouping defining multicast route attributes."; leaf expire { type uint32; units seconds; description ""; } leaf incoming-interface { type if:interface-ref; description "Reference to an entry in the global interface list."; } leaf mode { type pim-mode; description ""; } leaf msdp-learned { type boolean; description ""; } leaf rp-address { type inet:ip-address; description ""; } leaf rpf-neighbor { type inet:ip-address; description ""; } leaf spt-bit { type boolean; description ""; } leaf up-time { type uint32; units seconds; description ""; } list outgoing-interface { key "name"; description "A list of outgoing interfaces."; Liu, et al. Expires April 21, 2016 [Page 23] Internet-Draft PIM YANG October 2015 leaf name { type if:interface-ref; description "Interface name"; } leaf expire { type yang:timeticks; description "Expiring information."; } leaf up-time { type yang:timeticks; description ""; } leaf jp-state { type enumeration { enum "no-info" { description "The interface has Join state and no timers running"; } enum "join" { description "The interface has Join state."; } enum "prune-pending" { description "The router has received a Prune on this interface from a downstream neighbor and is waiting to see whether the prune will be overridden by another downstream router. For forwarding purposes, the Prune-Pending state functions exactly like the Join state."; } } description ""; } } } // multicast-route-attributes grouping neighbor-state-af-attributes { description "A grouping defining neighbor per af attributes."; leaf bfd-status { type enumeration { enum up { description ""; Liu, et al. Expires April 21, 2016 [Page 24] Internet-Draft PIM YANG October 2015 } enum down { description ""; } } description ""; } leaf expire { type uint32; units seconds; description "Neighbor expiring information."; } leaf dr-priority { type uint32; description "DR priority"; } leaf gen-id { type uint32; description "Generation ID."; } leaf up-time { type uint32; units seconds; description ""; } } // neighbor-state-af-attributes grouping per-af-attributes { description "A grouping defining per address family attributes."; uses graceful-restart-container { if-feature per-af-graceful-restart; } } // per-af-attributes grouping pim-instance-state-ref { description "An absolute reference to a PIM instance."; leaf routing-instance-state-ref { type rt:routing-instance-state-ref; description "Reference to the routing instance state."; } } // pim-instance-state-ref grouping pim-instance-af-state-ref { description Liu, et al. Expires April 21, 2016 [Page 25] Internet-Draft PIM YANG October 2015 "An absolute reference to a PIM instance address family."; uses pim-instance-state-ref; leaf instance-af-state-ref { type leafref { path "/rt:routing-state/rt:routing-instance" + "[rt:name = current()/../routing-instance-state-ref]/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family/pim-base:address-family"; } description "Reference to a PIM instance address family."; } } // pim-instance-state-af-ref grouping pim-interface-state-ref { description "An absolute reference to a PIM interface state."; uses pim-instance-state-ref; leaf interface-state-ref { type leafref { path "/rt:routing-state/rt:routing-instance" + "[rt:name = current()/../routing-instance-state-ref]/" + "rt:routing-protocols/pim-base:pim/pim-base:interfaces/" + "pim-base:interface/pim-base:interface"; } description "Reference to a PIM interface."; } } // pim-interface-state-ref grouping pim-neighbor-state-ref { description "An absolute reference to a PIM neighbor state."; uses pim-interface-state-ref; leaf interface-af-state-ref { type leafref { path "/rt:routing-state/rt:routing-instance" + "[rt:name = current()/../routing-instance-state-ref]/" + "rt:routing-protocols/pim-base:pim/pim-base:interfaces/" + "pim-base:interface" + "[pim-base:interface = " + "current()/../interface-state-ref]/" + "pim-base:address-family/pim-base:address-family"; } description "Reference to a PIM interface address family."; } leaf neighbor-ipv4-state-ref { Liu, et al. Expires April 21, 2016 [Page 26] Internet-Draft PIM YANG October 2015 when "../interface-af-state-ref = 'rt:ipv4'" { description ""; } type leafref { path "/rt:routing-state/rt:routing-instance" + "[rt:name = current()/../routing-instance-state-ref]/" + "rt:routing-protocols/pim-base:pim/pim-base:interfaces/" + "pim-base:interface" + "[pim-base:interface = " + "current()/../interface-state-ref]/" + "pim-base:address-family" + "[pim-base:address-family = " + "current()/../interface-af-state-ref]/" + "pim-base:neighbor-ipv4/pim-base:address"; } description "Reference to a PIM IPv4 neighbor."; } leaf neighbor-ipv6-state-ref { when "../interface-af-state-ref = 'rt:ipv6'" { description ""; } type leafref { path "/rt:routing-state/rt:routing-instance" + "[rt:name = current()/../routing-instance-state-ref]/" + "rt:routing-protocols/pim-base:pim/pim-base:interfaces/" + "pim-base:interface" + "[pim-base:interface = " + "current()/../interface-state-ref]/" + "pim-base:address-family" + "[pim-base:address-family = " + "current()/../interface-af-state-ref]/" + "pim-base:neighbor-ipv6/pim-base:address"; } description "Reference to a PIM IPv6 neighbor."; } } // pim-neighbor-state-ref grouping statistics-container { description "A container defining statistics attributes."; container statistics { description ""; leaf discontinuity-time { type yang:date-and-time; description "The time on the most recent occasion at which any one Liu, et al. Expires April 21, 2016 [Page 27] Internet-Draft PIM YANG October 2015 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."; } container error { description ""; uses statistics-error; } container queue { description ""; uses statistics-queue; } container received { description ""; uses statistics-sent-received; } container sent { description ""; uses statistics-sent-received; } } } // statistics-container grouping statistics-error { description "A grouping defining error statistics attributes."; uses statistics-sent-received; } // statistics-error grouping statistics-queue { description "A grouping defining queue statistics attributes."; leaf size { type uint32; description "The size of the input queue."; } leaf overflow { type yang:counter32; description "The number of the input queue overflows."; } } // statistics-queue Liu, et al. Expires April 21, 2016 [Page 28] Internet-Draft PIM YANG October 2015 grouping statistics-sent-received { description "A grouping defining sent and received statistics attributes."; leaf assert { type yang:counter32; description "The number of assert messages."; } leaf bsr { type yang:counter32; description "The number of bsr messages."; } leaf candidate-rp-advertisement { type yang:counter32; description "The number of Candidate-RP-advertisement messages."; } leaf hello { type yang:counter32; description "The number of hello messages."; } leaf join-prune { type yang:counter32; description "The number of join/prune messages."; } leaf register { type yang:counter32; description "The number of register messages."; } leaf register-stop { type yang:counter32; description "The number of register stop messages."; } leaf state-refresh { type yang:counter32; description "The number of state refresh messages."; } } // statistics-sent-received /* * Configuration data nodes Liu, et al. Expires April 21, 2016 [Page 29] Internet-Draft PIM YANG October 2015 */ augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols" { description "PIM augmentation to routing instance configuration."; container pim { description "PIM configuration data."; uses global-attributes; list address-family { key "address-family"; description "Each list entry for one address family."; uses rt:address-family; uses per-af-attributes; } // address-family container interfaces { description "Containing a list of interfaces."; list interface { key "interface"; description "List of pim interfaces."; leaf interface { type if:interface-ref; description "Reference to an entry in the global interface list."; } list address-family { key "address-family"; description "Each list entry for one address family."; uses rt:address-family; uses interface-config-attributes; } // address-family } // interface } // interfaces } // pim } // augment /* Liu, et al. Expires April 21, 2016 [Page 30] Internet-Draft PIM YANG October 2015 * Operational state data nodes */ augment "/rt:routing-state/rt:routing-instance/" + "rt:routing-protocols" { description "PIM augmentation to routing instance state."; container pim { description "PIM state data."; list address-family { key "address-family"; description "Each list entry for one address family."; uses rt:address-family; uses statistics-container; container topology-tree-info { description ""; list ipv4-route { when "../../../address-family = 'rt:ipv4'" { description "Only applicable to ipv4 address family."; } key "group source-addr is-rpt"; description ""; leaf group { type inet:ipv4-address; description ""; } leaf source-addr { type union { type enumeration { enum '*' { description ""; } } type inet:ipv4-address; } description ""; } leaf is-rpt { type boolean; description ""; } Liu, et al. Expires April 21, 2016 [Page 31] Internet-Draft PIM YANG October 2015 uses multicast-route-attributes; } // ipv4-route list ipv6-route { when "../../../address-family = 'rt:ipv6'" { description "Only applicable to ipv4 address family."; } key "group source-addr is-rpt"; description ""; leaf group { type inet:ipv6-address; description ""; } leaf source-addr { type union { type enumeration { enum '*' { description ""; } } type inet:ipv4-address; } description ""; } leaf is-rpt { type boolean; description ""; } uses multicast-route-attributes; } // ipv6-route } // routes } // address-family container interfaces { description "Containing a list of interfaces."; list interface { key "interface"; description "List of pim interfaces."; leaf interface { type if:interface-ref; description "Reference to an entry in the global interface list."; } Liu, et al. Expires April 21, 2016 [Page 32] Internet-Draft PIM YANG October 2015 list address-family { key "address-family"; description "Each list entry for one address family."; uses rt:address-family; uses interface-config-attributes; uses interface-state-attributes; } // address-family } // interface } // interfaces } // pim } // augment /* * RPCs */ /* * Notifications */ notification pim-neighbor-event { description "Notification event for neighbor."; leaf event-type { type neighbor-event-type; description "Event type."; } uses pim-neighbor-state-ref; leaf up-time { type uint32; units seconds; description ""; } } notification pim-interface-event { description "Notification event for interface."; leaf event-type { type interface-event-type; description "Event type."; } uses pim-interface-state-ref; container ipv4 { description ""; leaf-list address { type inet:ipv4-address; description ""; } leaf dr-addr { type inet:ipv4-address; Liu, et al. Expires April 21, 2016 [Page 33] Internet-Draft PIM YANG October 2015 description ""; } } container ipv6 { description ""; leaf-list address { type inet:ipv6-address; description ""; } leaf dr-addr { type inet:ipv6-address; description ""; } } } } 5.2. PIM RP module module ietf-pim-rp { namespace "urn:ietf:params:xml:ns:yang:ietf-pim-rp"; // replace with IANA namespace when assigned prefix pim-rp; import ietf-inet-types { prefix "inet"; } import ietf-interfaces { prefix "if"; } import ietf-routing { prefix "rt"; } import ietf-pim-base { prefix "pim-base"; } organization "IETF PIM Working Group"; Liu, et al. Expires April 21, 2016 [Page 34] Internet-Draft PIM YANG October 2015 contact "WG Web: WG List: WG Chair: Stig Venaas WG Chair: Mike McBride Editors: "; description "The YANG module defines a PIM RP (Rendezvous Point) model."; revision 2015-10-08 { description "Initial revision."; reference "RFC XXXX: A YANG Data Model for PIM"; } /* * Features */ feature bsr { description "This feature indicates that the system supports BSR."; } feature bsr-election-state { description "This feature indicates that the system supports providing BSR election state."; } feature static-rp-override { description "This feature indicates that the system supports configuration of static RP override."; } feature candidate-interface { description "This feature indicates that the system supports using an interface to configure a BSR or RP candidate."; } Liu, et al. Expires April 21, 2016 [Page 35] Internet-Draft PIM YANG October 2015 feature candidate-ipv4 { description "This feature indicates that the system supports using an IPv4 address to configure a BSR or RP candidate."; } feature candidate-ipv6 { description "This feature indicates that the system supports using an IPv6 address to configure a BSR or RP candidate."; } /* * Typedefs */ typedef rp-event-type { type enumeration { enum invalid-jp { description "An invalid JP message has been received."; } enum invalid-register { description "An invalid register message has been received."; } enum mapping-created { description "A new mapping has been created."; } enum mapping-deleted { description "A mapping has been deleted."; } } description "Operational status event type for notifications."; } /* * Identities */ identity rp-mode { description "The mode of an RP, which can be SM (Sparse Mode) or BIDIR (bi-directional)."; } /* Liu, et al. Expires April 21, 2016 [Page 36] Internet-Draft PIM YANG October 2015 * Groupings */ grouping bsr-config-attributes { description "Gouring of BSR config attributes."; container bsr-candidate { presence "Present to serve as a BSR candidate"; description "BSR candidate attributes."; choice interface-or-address { description "Use either interface or ip-address."; case interface { if-feature candidate-interface; leaf interface { type if:interface-ref; mandatory true; description "Interface to be used by BSR."; } } case ipv4-address { when "../../../../address-family = 'rt:ipv4'" { description "Only applicable to ipv4 address family."; } if-feature candidate-ipv4; leaf ipv4-address { type inet:ipv4-address; mandatory true; description "IP address to be used by BSR."; } } case ipv6-address { when "../../../../address-family = 'rt:ipv6'" { description "Only applicable to ipv6 address family."; } if-feature candidate-ipv6; leaf ipv6-address { type inet:ipv6-address; mandatory true; description "IP address to be used by BSR."; } Liu, et al. Expires April 21, 2016 [Page 37] Internet-Draft PIM YANG October 2015 } } leaf hash-mask-length{ type uint8 { range "0..32"; } mandatory true; description "Value contained in BSR messages used by all routers to hash (map) to an RP."; } leaf priority { type uint8 { range "0..255"; } mandatory true; description "BSR election priority among different candidate BSRs. A larger value has a higher priority over a smaller value."; } } // bsr-candidate list rp-candidate-interface { if-feature candidate-interface; key "interface"; description "A list of RP candidates"; leaf interface { type if:interface-ref; description "Interface that the RP candidate uses."; } uses rp-candidate-attributes; } list rp-candidate-ipv4-address { when "../../../address-family = 'rt:ipv4'" { description "Only applicable to ipv4 address family."; } if-feature candidate-ipv4; key "ipv4-address"; description "A list of RP candidates"; leaf ipv4-address { Liu, et al. Expires April 21, 2016 [Page 38] Internet-Draft PIM YANG October 2015 type inet:ipv4-address; description "IPv4 address that the RP candidate uses."; } uses rp-candidate-attributes; } list rp-candidate-ipv6-address { when "../../../address-family = 'rt:ipv6'" { description "Only applicable to ipv6 address family."; } if-feature candidate-ipv6; key "ipv6-address"; description "A list of RP candidates"; leaf ipv6-address { type inet:ipv6-address; description "IPv6 address that the RP candidate uses."; } uses rp-candidate-attributes; } } // bsr-config-attributes grouping bsr-state-attributes { description "Gouring of BSR state attributes."; container bsr { description "BSR information."; leaf addr { type inet:ip-address; description "BSR address"; } leaf hash-mask-length { type uint8; description ""; } leaf priority { type uint8 { range "0..255"; } description ""; } leaf up-time { type uint32; units seconds; Liu, et al. Expires April 21, 2016 [Page 39] Internet-Draft PIM YANG October 2015 description ""; } } choice election-state { if-feature bsr-election-state; description "BSR election state."; case candidate { leaf candidate-bsr-state { type enumeration { enum "candidate" { description "The router is a candidate to be the BSR for the scope zone, but currently another router is the preferred BSR."; } enum "pending" { description "The router is a candidate to be the BSR for the scope zone. Currently, no other router is the preferred BSR, but this router is not yet the elected BSR. This is a temporary state that prevents rapid thrashing of the choice of BSR during BSR election."; } enum "elected" { description "The router is the elected BSR for the scope zone and it must perform all the BSR functions."; } } description "Candidate-BSR state."; reference "RFC5059, Section 3.1.1."; } } case "non-candidate" { leaf non-candidate-bsr-state { type enumeration { enum "no-info" { description "The router has no information about this scope zone."; } enum "accept-any" { description "The router does not know of an active BSR, and will accept the first Bootstrap message it sees as giving Liu, et al. Expires April 21, 2016 [Page 40] Internet-Draft PIM YANG October 2015 the new BSR's identity and the RP-Set."; } enum "accept" { description "The router knows the identity of the current BSR, and is using the RP-Set provided by that BSR. Only Bootstrap messages from that BSR or from a C-BSR with higher weight than the current BSR will be accepted."; } } description "Non-candidate-BSR state."; reference "RFC5059, Section 3.1.2."; } } } // election-state leaf bsr-next-bootstrap { type uint16; units seconds; description ""; } container rp { description "State information of the RP."; leaf rp-address { type inet:ip-address; description ""; } leaf group-policy { type string; description ""; } leaf up-time { type uint32; description ""; } } leaf rp-candidate-next-advertisement { type uint16; units seconds; description ""; } } // bsr-state-attributes grouping rp-state-attributes { Liu, et al. Expires April 21, 2016 [Page 41] Internet-Draft PIM YANG October 2015 description "Gouring of static RP attributes."; leaf info-source-type { type enumeration { enum static { description ""; } enum bootstrap { description ""; } } description ""; } // info-source-type leaf up-time { type uint32; units seconds; description ""; } leaf expire { type uint16; units seconds; description ""; } } // rp-state-attributes grouping static-rp-attributes { description "Gouring of static RP attributes, used in augmenting modules."; leaf policy-name { type string; description "Static RP policy."; } leaf override { if-feature static-rp-override; type boolean; description "When there is a conflict between static RP and dynamic RP, setting this attribute to 'true' will ask the system to use static RP."; } } // static-rp-attributes grouping rp-candidate-attributes { description "Gouring of RP candidate attributes."; Liu, et al. Expires April 21, 2016 [Page 42] Internet-Draft PIM YANG October 2015 leaf policy { type string; description "ACL policy used to filter group addresses."; } leaf mode { type identityref { base rp-mode; } description "RP mode."; } } // rp-candidate-attributes /* * Configuration data nodes */ augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family" { description "PIM RP augmentation."; container rp { description "PIM RP configuration data."; container static-rp { description "Containing static RP attributes."; list ipv4-rp { when "../../../address-family = 'rt:ipv4'" { description "Only applicable to ipv4 address family."; } key "ipv4-addr"; description "A list of IPv4 RP addresses."; leaf ipv4-addr { type inet:ipv4-address; description "Specifies a static RP address."; } } list ipv6-rp { when "../../../address-family = 'rt:ipv6'" { description Liu, et al. Expires April 21, 2016 [Page 43] Internet-Draft PIM YANG October 2015 "Only applicable to ipv6 address family."; } key "ipv6-addr"; description "A list of IPv6 RP addresses."; leaf ipv6-addr { type inet:ipv6-address; description "Specifies a static RP address."; } } } // static-rp container bsr { if-feature bsr; description "Containing BSR (BootStrap Router) attributes."; uses bsr-config-attributes; } // bsr } // rp } // augment /* * Operational state data nodes */ augment "/rt:routing-state/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family" { description "PIM SM state."; container rp { description "PIM RP state data."; container bsr { if-feature bsr; description "Containing BSR (BootStrap Router) attributes."; uses bsr-config-attributes; uses bsr-state-attributes; } // bsr container rp-list { description "Containing a list RPs."; list ipv4-rp { Liu, et al. Expires April 21, 2016 [Page 44] Internet-Draft PIM YANG October 2015 when "../../../address-family = 'rt:ipv4'" { description "Only applicable to ipv4 address family."; } key "ipv4-addr"; description "A list of IPv4 RP addresses."; leaf ipv4-addr { type inet:ipv4-address; description "RP address."; } leaf info-source-addr { type inet:ipv4-address; description "The address where RP information is learned."; } uses rp-state-attributes; } list ipv6-rp { when "../../../address-family = 'rt:ipv6'" { description "Only applicable to ipv6 address family."; } key "ipv6-addr"; description "A list of IPv6 RP addresses."; leaf ipv6-addr { type inet:ipv6-address; description "RP address."; } leaf info-source-addr { type inet:ipv6-address; description "The address where RP information is learned."; } uses rp-state-attributes; } } // rp-list container rp-mappings { description "Containing a list group-to-RP mappings."; list ipv4-rp { when "../../../address-family = 'rt:ipv4'" { description Liu, et al. Expires April 21, 2016 [Page 45] Internet-Draft PIM YANG October 2015 "Only applicable to ipv4 address family."; } key "group rp-addr"; description "A list of group-to-RP mappings."; leaf group { type inet:ipv4-prefix; description "Group prefix."; } leaf rp-addr { type inet:ipv4-address; description "RP address."; } leaf info-source-addr { type inet:ipv4-address; description "The address where RP information is learned."; } uses rp-state-attributes; } list ipv6-rp { when "../../../address-family = 'rt:ipv6'" { description "Only applicable to ipv6 address family."; } key "group rp-addr"; description "A list of IPv6 RP addresses."; leaf group { type inet:ipv6-prefix; description "Group prefix."; } leaf rp-addr { type inet:ipv6-address; description "RP address."; } leaf info-source-addr { type inet:ipv6-address; description "The address where RP information is learned."; } uses rp-state-attributes; } Liu, et al. Expires April 21, 2016 [Page 46] Internet-Draft PIM YANG October 2015 } // rp-mappings } // rp } // augment /* * RPCs */ /* * Notifications */ notification pim-rp-event { description "Notification event for RP."; leaf event-type { type rp-event-type; description "Event type."; } uses pim-base:pim-instance-af-state-ref; leaf group { type inet:ip-address; description ""; } leaf rp-address { type inet:ip-address; description ""; } leaf is-rpt { type boolean; description ""; } leaf mode { type pim-base:pim-mode; description ""; } leaf message-origin { type inet:ip-address; description ""; } } } Liu, et al. Expires April 21, 2016 [Page 47] Internet-Draft PIM YANG October 2015 5.3. PIM-SM module module ietf-pim-sm { namespace "urn:ietf:params:xml:ns:yang:ietf-pim-sm"; // replace with IANA namespace when assigned prefix pim-sm; import ietf-inet-types { prefix "inet"; } import ietf-routing { prefix "rt"; } import ietf-pim-base { prefix "pim-base"; } import ietf-pim-rp { prefix "pim-rp"; } organization "IETF PIM Working Group"; contact "WG Web: WG List: WG Chair: Stig Venaas WG Chair: Mike McBride Editors: "; description "The YANG module defines a sparse mode PIM model."; revision 2015-10-08 { description "Initial revision."; reference Liu, et al. Expires April 21, 2016 [Page 48] Internet-Draft PIM YANG October 2015 "RFC XXXX: A YANG Data Model for PIM"; } /* * Features */ feature spt-switch-infinity { description "This feature indicates that the system supports configuration choice whether to trigger the switchover from the rpt to the spt."; } feature spt-switch-policy { description "This feature indicates that the system supports configuring policy for the switchover from the rpt to the spt."; } /* * Identities */ identity sm { base pim-rp:rp-mode; description "SM (Spars Mode)."; } /* * Groupings */ grouping static-rp-sm-container { description "Gouping that contains SM attributes for static RP."; container sm { presence "Indicate the support of sparse mode."; description "PIM SM configuration data."; uses pim-rp:static-rp-attributes; } // sm } // static-rp-sm-container /* * Configuration data nodes */ Liu, et al. Expires April 21, 2016 [Page 49] Internet-Draft PIM YANG October 2015 augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family" { description "PIM SM augmentation."; container sm { description "PIM SM configuration data."; container asm { description "ASM (Any Source Multicast) attributes."; container anycast-rp { presence "Present to enable anycast RP."; description "Anycast RP attributes."; container ipv4 { when "../../../../address-family = 'rt:ipv4'" { description "Only applicable to ipv4 address family."; } description "IPv4 attributes. Only applicable when pim-base:address-family is ipv4."; list ipv4-anycast-rp { key "anycast-addr rp-addr"; description "A list of anycast RP setttings."; leaf anycast-addr { type inet:ipv4-address; description "IP address of the anycast RP set. This IP address is used by the multicast groups or sources to join or register."; } leaf rp-addr { type inet:ipv4-address; description "IP address of the router configured with anycast RP. This is the IP address where the Register messages are forwarded."; } } } Liu, et al. Expires April 21, 2016 [Page 50] Internet-Draft PIM YANG October 2015 container ipv6 { when "../../../../address-family = 'rt:ipv6'" { description "Only applicable to ipv6 address family."; } description "IPv6 attributes. Only applicable when pim-base:address-family is ipv6."; list ipv6-anycast-rip { key "anycast-addr rp-addr"; description "A list of anycast RP setttings."; leaf anycast-addr { type inet:ipv6-address; description "IP address of the anycast RP set. This IP address is used by the multicast groups or sources to join or register."; } leaf rp-addr { type inet:ipv6-address; description "IP address of the router configured with anycast RP. This is the IP address where the Register messages are forwarded."; } } } } container spt-switch { description "SPT (Shortest Path Tree) switching attributes."; container infinity { if-feature spt-switch-infinity; presence "Present if spt-switch is set to infinity."; description "The receiver's dr never triggers the switchover from the rpt to the spt."; leaf policy-name { if-feature spt-switch-policy; type string; description "Switch policy."; } } // infinity } Liu, et al. Expires April 21, 2016 [Page 51] Internet-Draft PIM YANG October 2015 } // asm container ssm { presence "Present to enable SSM (Source-Specific Multicast)."; description "SSM (Source-Specific Multicast) attributes."; leaf range-poligy { type string; description "Policy used to define SSM address range."; } } // ssm } // sm } // augment augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:interfaces/pim-base:interface/" + "pim-base:address-family" { description "PIM SM augmentation."; container sm { presence "Present to enable sparse-mode."; description "PIM SM configuration data."; leaf passive { type empty; description "Specifies that no PIM messages are sent out of the PIM interface, but the interface can be included in a multicast forwarding entry."; } } // sm } // augment augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family/pim-rp:rp/" + "pim-rp:static-rp/pim-rp:ipv4-rp" { description "PIM SM augmentation."; uses static-rp-sm-container; } // augment augment "/rt:routing/rt:routing-instance/" Liu, et al. Expires April 21, 2016 [Page 52] Internet-Draft PIM YANG October 2015 + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family/pim-rp:rp/" + "pim-rp:static-rp/pim-rp:ipv6-rp" { description "PIM SM augmentation."; uses static-rp-sm-container; } // augment /* * Operational state data nodes */ augment "/rt:routing-state/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family" { description "PIM SM state."; container sm { description "PIM SM state data."; } // sm } // augment /* * RPCs */ /* * Notifications */ } 5.4. PIM-DM module module ietf-pim-dm { namespace "urn:ietf:params:xml:ns:yang:ietf-pim-dm"; // replace with IANA namespace when assigned prefix pim-dm; import ietf-routing { prefix "rt"; Liu, et al. Expires April 21, 2016 [Page 53] Internet-Draft PIM YANG October 2015 } import ietf-pim-base { prefix "pim-base"; } organization "IETF PIM Working Group"; contact "WG Web: WG List: WG Chair: Stig Venaas WG Chair: Mike McBride Editors: "; description "The YANG module defines a DM (Dense Mode) PIM model."; revision 2015-10-08 { description "Initial revision."; reference "RFC XXXX: A YANG Data Model for PIM"; } /* * Features */ /* * Identities */ /* * Groupings */ /* * Configuration data nodes */ augment "/rt:routing/rt:routing-instance/" Liu, et al. Expires April 21, 2016 [Page 54] Internet-Draft PIM YANG October 2015 + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family" { description "PIM DM augmentation."; container dm { presence "Present to enable dense-mode."; description "PIM DM configuration data."; } // Dm } // augment augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:interfaces/pim-base:interface/" + "pim-base:address-family" { description "PIM DM augmentation to PIM base interface."; container dm { presence "Present to enable dense-mode."; description "PIM DM configuration data."; } // sm } // augment /* * Operational state data nodes */ augment "/rt:routing-state/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family" { description "PIM DM state."; container dm { description "PIM DM state data."; } // dm } // augment /* * RPCs */ /* * Notifications */ } Liu, et al. Expires April 21, 2016 [Page 55] Internet-Draft PIM YANG October 2015 5.5. PIM-BIDIR module module ietf-pim-bidir { namespace "urn:ietf:params:xml:ns:yang:ietf-pim-bidir"; // replace with IANA namespace when assigned prefix pim-bidir; import ietf-routing { prefix "rt"; } import ietf-pim-base { prefix "pim-base"; } import ietf-pim-rp { prefix "pim-rp"; } organization "IETF PIM Working Group"; contact "WG Web: WG List: WG Chair: Stig Venaas WG Chair: Mike McBride Editors: "; description "The YANG module defines a BIDIR (Bidirectional) mode PIM model."; revision 2015-10-08 { description "Initial revision."; reference "RFC XXXX: A YANG Data Model for PIM"; } Liu, et al. Expires April 21, 2016 [Page 56] Internet-Draft PIM YANG October 2015 /* * Features */ feature intf-df-election { description "Support configuration of interface DF election."; } /* * Identities */ identity bidir { base pim-rp:rp-mode; description "BIDIR (Bidirectional) mode."; } /* * Groupings */ grouping static-rp-bidir-container { description "Gouping that contains BIDIR attributes for static RP."; container bidir { presence "Indicate the support of BIDIR mode."; description "PIM BIDIR configuration data."; uses pim-rp:static-rp-attributes; } // bidir } // static-rp-bidir-container /* * Configuration data nodes */ augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family" { description "PIM BIDIR augmentation."; container bidir { description "PIM BIDIR configuration data."; } // bidir } // augment Liu, et al. Expires April 21, 2016 [Page 57] Internet-Draft PIM YANG October 2015 augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:interfaces/pim-base:interface/" + "pim-base:address-family" { description "PIM BIDIR augmentation."; container bidir { presence "Present to enable BIDIR mode."; description "PIM BIDIR configuration data."; container df-election { if-feature intf-df-election; description "DF election attributes."; leaf offer-interval { type uint32; description "Offer interval"; } leaf backoff-interval { type uint32; description "Backoff interval"; } leaf offer-multipler { type uint8; description "Offer multipler"; } } // df-election } // bidir } // augment augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family/pim-rp:rp/" + "pim-rp:static-rp/pim-rp:ipv4-rp" { description "PIM BIDIR augmentation."; uses static-rp-bidir-container; } // augment augment "/rt:routing/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family/pim-rp:rp/" + "pim-rp:static-rp/pim-rp:ipv6-rp" { description "PIM BIDIR augmentation."; uses static-rp-bidir-container; } // augment Liu, et al. Expires April 21, 2016 [Page 58] Internet-Draft PIM YANG October 2015 /* * Operational state data nodes */ augment "/rt:routing-state/rt:routing-instance/" + "rt:routing-protocols/pim-base:pim/" + "pim-base:address-family" { description "PIM BIDIR state."; container bidir { description "PIM BIDIR state data."; } // bidir } // augment /* * RPCs */ /* * Notifications */ } 6. TODO list In this draft, several aspects of the model are incomplete. The PIM- DM and BI-DIR modules are just placeholders for now to demonstrate the hierarchy of the model. Other things the draft will include when complete but does not yet include: o Interaction with BFD protocol o Constraints (constant ranges, validation) o State-limiting and policy o Statistics. For these subjects, we will employ the same design principles of expressing a highly general model; vendors may use features and add augmentations in order to express which subsets of this general model are valid in their implementations. Liu, et al. Expires April 21, 2016 [Page 59] Internet-Draft PIM YANG October 2015 7. Security Considerations The data model defined does not introduce any security implications. This draft does not change any underlying security issues inherent in [I-D.ietf-netmod-routing-cfg]. 8. IANA Considerations TBD 9. Acknowledgements The authors would like to thank Steve Baillargeon, Guo Feng, Hu Fangwei, Robert Kebler, Tanmoy Kundu, Liu Yisong, Mahesh Sivakumar, and Stig Venaas for their valuable contributions. 10. References 10.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/ RFC2119, March 1997, . [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, . [I-D.ietf-netmod-rfc6087bis] Bierman, A., "Guidelines for Authors and Reviewers of YANG Data Model Documents", draft-ietf-netmod-rfc6087bis-04 (work in progress), July 2015. 10.2. Informative References [RFC3569] Bhattacharyya, S., Ed., "An Overview of Source-Specific Multicast (SSM)", RFC 3569, DOI 10.17487/RFC3569, July 2003, . Liu, et al. Expires April 21, 2016 [Page 60] Internet-Draft PIM YANG October 2015 [RFC3973] Adams, A., Nicholas, J., and W. Siadak, "Protocol Independent Multicast - Dense Mode (PIM-DM): Protocol Specification (Revised)", RFC 3973, DOI 10.17487/RFC3973, January 2005, . [RFC4601] Fenner, B., Handley, M., Holbrook, H., and I. Kouvelas, "Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)", RFC 4601, DOI 10.17487/ RFC4601, August 2006, . [RFC4610] Farinacci, D. and Y. Cai, "Anycast-RP Using Protocol Independent Multicast (PIM)", RFC 4610, DOI 10.17487/ RFC4610, August 2006, . [RFC5015] Handley, M., Kouvelas, I., Speakman, T., and L. Vicisano, "Bidirectional Protocol Independent Multicast (BIDIR- PIM)", RFC 5015, DOI 10.17487/RFC5015, October 2007, . [RFC5059] Bhaskar, N., Gall, A., Lingard, J., and S. Venaas, "Bootstrap Router (BSR) Mechanism for Protocol Independent Multicast (PIM)", RFC 5059, DOI 10.17487/RFC5059, January 2008, . [RFC6087] Bierman, A., "Guidelines for Authors and Reviewers of YANG Data Model Documents", RFC 6087, DOI 10.17487/RFC6087, January 2011, . [I-D.ietf-netmod-routing-cfg] Lhotka, L. and A. Lindem, "A YANG Data Model for Routing Management", draft-ietf-netmod-routing-cfg-20 (work in progress), October 2015. Authors' Addresses Liu Xufeng Ericsson 1595 Spring Hill Road, Suite 500 Vienna VA 22182 USA EMail: xufeng.liu@ericsson.com Liu, et al. Expires April 21, 2016 [Page 61] Internet-Draft PIM YANG October 2015 Pete McAllister Metaswitch Networks 100 Church Street Enfield EN2 6BQ UK EMail: pete.mcallister@metaswitch.com Anish Peter Juniper Networks Electra, Exora Business Park Bangalore, KA 560103 India EMail: anishp@juniper.net Liu, et al. Expires April 21, 2016 [Page 62]