RFC 9398
A YANG Data Model for Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Proxy Devices
Pages: ~20
IETF/rtg/pim/draft-ietf-pim-igmp-mld-proxy-yang-10
Proposed Standard
H. Zhao
Ericsson (China) Communications Company Ltd.
X. Liu
Alef Edge
Y. Liu
China Mobile
M. Panchanathan
Cisco Systems, Inc.
M. Sivakumar
Juniper Networks
May 2023
A YANG Data Model for Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Proxy Devices
Abstract
This document defines a YANG data model that can be used to configure and manage Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) Proxy devices. The YANG module in this document conforms to the Network Management Datastore Architecture (NMDA).
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc9398 .
Copyright Notice
Copyright (c) 2023 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 (https://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 Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License.
1. Introduction
This document defines a YANG data model [RFC 7950] for the management of Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) Proxy devices [RFC 4605]. The YANG module in this document conforms to the Network Management Datastore Architecture as defined in [RFC 8342].
1.1. Terminology
The terminology for describing YANG data models is found in [RFC 6020] and [RFC 7950], including:
- augment
- data model
- data node
- identity
- module
1.2. Tree Diagrams
Tree diagrams used in this document follow the notation defined in [RFC 8340].
1.3. Prefixes in Data Node Names
In this document, names of data nodes and other data model objects are often used without a prefix, as long as the context clearly indicates the YANG module in which each name is defined. Otherwise, names are prefixed using the standard prefix associated with the corresponding YANG module, as shown in Table 1.
Table 1: Prefixes and Corresponding YANG Modules
| Prefix | YANG Module | Reference |
|---|---|---|
| inet | ietf-inet-types | [RFC 6991] |
| if | ietf-interfaces | [RFC 8343] |
| rt | ietf-routing | [RFC 8349] |
| rt-types | ietf-routing-types | [RFC 8294] |
| pim-base | ietf-pim-base | [RFC 9128] |
2. Design of Data Model
The model covers forwarding based on IGMP and MLD proxying [RFC 4605]. One goal of this document is to define a data model that provides a common user interface for IGMP/MLD Proxy devices.
2.1. Overview
The model defined in this document has all the common building blocks for IGMP/MLD Proxy devices and can be used to configure those devices. The operational state data and statistics can also be retrieved via this model.
2.2. Optional Features
This model is designed to represent the basic capability subsets of IGMP/MLD Proxies. The main design goals of this document are that (1) the basic capabilities described in the model will be supported by any major implementations that exist at the time of this writing and (2) the configuration of all implementations meeting the specifications will be easy to express through some combination of the optional features in the model and simple vendor augmentations.
This model declares two features representing capabilities that not all deployed devices support. One feature is called "igmp-proxy", and the other feature is called "mld-proxy". Either or both features could be implemented; this would provide more choices for vendors.
2.3. Position of Address Family in Hierarchy
IGMP Proxies only support IPv4, while MLD Proxies only support IPv6. The data model defined in this document can be used for both IPv4 and IPv6 address families.
This document defines IGMP Proxies and MLD Proxies in separate schema branches in the structure. The benefits of this technique are as follows:
- The model can support IGMP Proxies (IPv4), MLD Proxies (IPv6), or both, optionally and independently. Such flexibility cannot be achieved cleanly with a combined branch.
- The structure is consistent with other YANG data models such as the model defined in [RFC 8652], which uses separate branches for IPv4 and IPv6.
- Having separate branches for IGMP Proxies and MLD Proxies allows minor differences in their behavior to be modeled more simply and cleanly. The two branches can better support different features and node types.
3. Module Structure
This model augments the core routing data model specified in [RFC 8349].
The "igmp-proxy" container instantiates an IGMP Proxy. The "mld-proxy" container instantiates an MLD Proxy.
+--rw routing
+--rw router-id?
+--rw control-plane-protocols
| +--rw control-plane-protocol* [type name]
| +--rw type
| +--rw name
| +--rw igmp-proxy <= Augmented by this model
...
| +--rw mld-proxy <= Augmented by this model
3.1. IGMP Proxy Configuration and Operational State
The YANG module augments /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol to add the igmp-proxy container.
All attributes related to IGMP Proxies are defined in the igmp-proxy container. The read-write attributes represent configurable data. The read-only attributes represent state data.
The igmp-version parameter represents the IGMP protocol version; the default value is 2. If the value of the "enabled" parameter is "true", it means that the IGMP Proxy is enabled.
The interface list under igmp-proxy contains upstream interfaces for an IGMP Proxy. A constraint is provided to make sure that the upstream interface for the IGMP Proxy is not configured to use PIM.
To configure a downstream interface for an IGMP Proxy, the ability to enable IGMP on that interface is needed. This is defined in "[A YANG Data Model for the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD)]" [RFC 8652].
augment /rt:routing/rt:control-plane-protocols
/rt:control-plane-protocol:
+--rw igmp-proxy! {igmp-proxy}?
+--rw interfaces
+--rw interface* [name]
+--rw name if:interface-ref
+--rw igmp-version? uint8
+--rw enabled? boolean
+--rw sender-source-address? inet:ipv4-address-no-zone
+--ro group* [group-address]
+--ro group-address
| rt-types:ipv4-multicast-group-address
+--ro up-time? uint32
+--ro filter-mode enumeration
+--ro source* [source-address]
+--ro source-address
| inet:ipv4-address-no-zone
+--ro up-time? uint32
+--ro downstream-interface* [name]
+--ro name if:interface-ref
3.2. MLD Proxy Configuration and Operational State
The YANG module augments /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol to add the mld-proxy container.
All attributes related to MLD Proxies are defined in the mld-proxy container. The read-write attributes represent configurable data. The read-only attributes represent state data.
The mld-version parameter represents the MLD protocol version; the default value is 2. If the value of the "enabled" parameter is "true", it means that the MLD Proxy is enabled.
The interface list under mld-proxy contains upstream interfaces for an MLD Proxy. A constraint is provided to make sure that the upstream interface for the MLD Proxy is not configured to use PIM.
To configure a downstream interface for an MLD Proxy, enable MLD on that interface. This is defined in "[A YANG Data Model for the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD)]" [RFC 8652].
augment /rt:routing/rt:control-plane-protocols
/rt:control-plane-protocol:
+--rw mld-proxy! {mld-proxy}?
+--rw interfaces
+--rw interface* [name]
+--rw name if:interface-ref
+--rw mld-version? uint8
+--rw enabled? boolean
+--rw sender-source-address? inet:ipv6-address-no-zone
+--ro group* [group-address]
+--ro group-address
| rt-types:ipv6-multicast-group-address
+--ro up-time? uint32
+--ro filter-mode enumeration
+--ro source* [source-address]
+--ro source-address
| inet:ipv6-address-no-zone
+--ro up-time? uint32
+--ro downstream-interface* [name]
+--ro name if:interface-ref
4. IGMP/MLD Proxy YANG Module
This module references [RFC 4605], [RFC 6991], [RFC 8294], [RFC 8343], [RFC 8349], and [RFC 9128].
module ietf-igmp-mld-proxy {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-igmp-mld-proxy";
prefix igmp-mld-proxy;
import ietf-inet-types {
prefix inet;
reference
"RFC 6991: Common YANG Data Types";
}
import ietf-interfaces {
prefix if;
reference
"RFC 8343: A YANG Data Model for Interface Management";
}
import ietf-routing {
prefix rt;
reference
"RFC 8349: A YANG Data Model for Routing Management (NMDA
Version)";
}
import ietf-routing-types {
prefix rt-types;
reference
"RFC 8294: Common YANG Data Types for the Routing Area";
}
import ietf-pim-base {
prefix pim-base;
reference
"RFC 9128: YANG Data Model for Protocol Independent Multicast
(PIM)";
}
organization
"IETF PIM Working Group";
contact
"WG Web: <https://datatracker.ietf.org/wg/pim/>
WG List: <mailto:pim@ietf.org>
Editors: Hongji Zhao
<mailto:hongji.zhao@ericsson.com>
Xufeng Liu
<mailto:xufeng.liu.ietf@gmail.com>
Yisong Liu
<mailto:liuyisong@chinamobile.com>
Mani Panchanathan
<mailto:mapancha@cisco.com>
Mahesh Sivakumar
<mailto:sivakumar.mahesh@gmail.com>";
description
"This module defines a collection of YANG definitions common for
all Internet Group Management Protocol (IGMP) and Multicast
Listener Discovery (MLD) Proxy devices.
Copyright (c) 2023 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to
the license terms contained in, the Revised BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC 9398; see the
RFC itself for full legal notices.";
revision 2023-05-30 {
description
"Initial revision.";
reference
"RFC 9398: A YANG Data Model for Internet Group Management
Protocol (IGMP) and Multicast Listener Discovery (MLD)
Proxy Devices";
}
/*
* Features
*/
feature igmp-proxy {
description
"Support for the IGMP Proxy protocol.";
reference
"RFC 4605: Internet Group Management Protocol (IGMP) /
Multicast Listener Discovery (MLD)-Based Multicast Forwarding
('IGMP/MLD Proxying')";
}
feature mld-proxy {
description
"Support for the MLD Proxy protocol.";
reference
"RFC 4605: Internet Group Management Protocol (IGMP) /
Multicast Listener Discovery (MLD)-Based Multicast Forwarding
('IGMP/MLD Proxying')";
}
/*
* Identities
*/
identity igmp-proxy {
base rt:control-plane-protocol;
description
"IGMP Proxy protocol.";
}
identity mld-proxy {
base rt:control-plane-protocol;
description
"MLD Proxy protocol.";
}
/*
* Groupings
*/
grouping per-interface-config-attributes {
description
"'config' attributes as listed under an interface entry.";
leaf enabled {
type boolean;
default "true";
description
"Set the value to 'true' to enable the IGMP/MLD Proxy.";
}
} // per-interface-config-attributes
grouping state-group-attributes {
description
"State group attributes.";
leaf up-time {
type uint32;
units "seconds";
description
"The elapsed time for (S,G) or (*,G).";
}
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.";
}
}
mandatory true;
description
"Filter mode for a multicast group.
May be either 'include' or 'exclude'.";
}
} // state-group-attributes
/* augments */
augment "/rt:routing/rt:control-plane-protocols"
+ "/rt:control-plane-protocol" {
when "derived-from-or-self(rt:type, "
+ "'igmp-mld-proxy:igmp-proxy')" {
description
"This augmentation is only valid for IGMP Proxies.";
}
description
"IGMP Proxy augmentation to routing control plane protocol
configuration and state.";
container igmp-proxy {
if-feature "igmp-proxy";
presence "IGMP Proxy configuration.";
description
"IGMP Proxy instance configuration.";
container interfaces {
description
"Contains a list of upstream interfaces.";
list interface {
key "name";
description
"List of upstream interfaces.";
leaf name {
type if:interface-ref;
must 'not( current() = /rt:routing'
+ '/rt:control-plane-protocols/pim-base:pim'
+ '/pim-base:interfaces/pim-base:interface'
+ '/pim-base:name )' {
description
"The upstream interface for the IGMP Proxy
must not be configured to use PIM.";
}
description
"The upstream interface name.";
}
leaf igmp-version {
type uint8 {
range "1..3";
}
default "2";
description
"IGMP version.";
}
uses per-interface-config-attributes;
leaf sender-source-address {
type inet:ipv4-address-no-zone;
description
"The sender source address of an
IGMP membership report message or leave message.";
}
list group {
key "group-address";
config false;
description
"List of the multicast groups in the membership
database built on this upstream interface.";
leaf group-address {
type rt-types:ipv4-multicast-group-address;
description
"Multicast group address.";
}
uses state-group-attributes;
list source {
key "source-address";
description
"Multicast source information
for the multicast group.";
leaf source-address {
type inet:ipv4-address-no-zone;
description
"Multicast source address.";
}
leaf up-time {
type uint32;
units "seconds";
description
"The elapsed time for (S,G) or (*,G).";
}
list downstream-interface {
key "name";
description
"List of downstream interfaces.";
leaf name {
type if:interface-ref;
description
"Downstream interfaces
for each upstream interface.";
}
}
} // list source
} // list group
} // interface
} // interfaces
}
}
augment "/rt:routing/rt:control-plane-protocols"
+ "/rt:control-plane-protocol" {
when "derived-from-or-self(rt:type, "
+ "'igmp-mld-proxy:mld-proxy')" {
description
"This augmentation is only valid for MLD Proxies.";
}
description
"MLD Proxy augmentation to routing control plane protocol
configuration and state.";
container mld-proxy {
if-feature "mld-proxy";
presence "MLD Proxy configuration.";
description
"MLD Proxy instance configuration.";
container interfaces {
description
"Contains a list of upstream interfaces.";
list interface {
key "name";
description
"List of upstream interfaces.";
leaf name {
type if:interface-ref;
must 'not( current() = /rt:routing'
+ '/rt:control-plane-protocols/pim-base:pim'
+ '/pim-base:interfaces/pim-base:interface'
+ '/pim-base:name )' {
description
"The upstream interface for the MLD Proxy
must not be configured to use PIM.";
}
description
"The upstream interface name.";
}
leaf mld-version {
type uint8 {
range "1..2";
}
default "2";
description
"MLD version.";
}
uses per-interface-config-attributes;
leaf sender-source-address {
type inet:ipv6-address-no-zone;
description
"The sender source address of an
MLD membership report message or leave message.";
}
list group {
key "group-address";
config false;
description
"List of the multicast groups in the membership
database built on this upstream interface.";
leaf group-address {
type rt-types:ipv6-multicast-group-address;
description
"Multicast group address.";
}
uses state-group-attributes;
list source {
key "source-address";
description
"Multicast source information
for the multicast group.";
leaf source-address {
type inet:ipv6-address-no-zone;
description
"Multicast source address.";
}
leaf up-time {
type uint32;
units "seconds";
description
"The elapsed time for (S,G) or (*,G).";
}
list downstream-interface {
key "name";
description
"List of downstream interfaces.";
leaf name {
type if:interface-ref;
description
"Downstream interfaces
for each upstream interface.";
}
}
} // list source
} // list group
} // interface
} // interfaces
}
}
}
5. Security Considerations
The YANG module specified in this document defines a schema for data that is designed to be accessed via network management protocols such as NETCONF [RFC 6241] or RESTCONF [RFC 8040]. The lowest NETCONF layer is the secure transport layer, and the mandatory-to-implement secure transport is Secure Shell (SSH) [RFC 6242]. The lowest RESTCONF layer is HTTPS, and the mandatory-to-implement secure transport is TLS [RFC 8446].
The Network Configuration Access Control Model (NACM) [RFC 8341] provides the means to restrict access for particular NETCONF or RESTCONF users to a preconfigured subset of all available NETCONF or RESTCONF protocol operations and content.
There are a number of data nodes defined in this YANG module that are writable/creatable/deletable (i.e., config true, which is the default). These data nodes may be considered sensitive or vulnerable in some network environments. Write operations (e.g., edit-config) to these data nodes without proper protection can have a negative effect on network operations. These are the subtrees and data nodes and their sensitivity/vulnerability:
Under /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol:/ igmp-mld-proxy:igmp-proxy:
Unauthorized access to any data nodes in these subtrees can disclose operational state information about the IGMP/MLD Proxy on this device. Group information or source information may expose multicast group memberships.
- igmp-mld-proxy:interfaces
- This subtree specifies the interface list for an IGMP Proxy. Modifying the configuration may cause the IGMP Proxy interface to be deleted or changed.
- igmp-mld-proxy:interfaces/interface
- This subtree specifies the configuration for the IGMP Proxy attributes at the interface level. Modifying the configuration may cause the IGMP Proxy to be deleted or changed on a specific interface.
- igmp-mld-proxy:interfaces
- This subtree specifies the interface list for an MLD Proxy. Modifying the configuration may cause the MLD Proxy interface to be deleted or changed.
- igmp-mld-proxy:interfaces/interface
- This subtree specifies the configuration for the MLD Proxy attributes at the interface level. Modifying the configuration may cause the MLD Proxy to be deleted or changed on a specific interface.
Under /rt:routing/rt:control-plane-protocols/rt:control-plane-protocol:/ igmp-mld-proxy:igmp-proxy igmp-mld-proxy:mld-proxy
6. IANA Considerations
6.1. IETF XML Registry
This document registers the following namespace URIs in the "IETF XML Registry" [RFC 3688]:
- URI:
- urn:ietf:params:xml:ns:yang:ietf-igmp-mld-proxy
- Registrant Contact:
- The IESG.
- XML:
- N/A; the requested URI is an XML namespace.
6.2. YANG Module Names Registry
This document registers the following YANG module in the "YANG Module Names" registry [RFC 6020]:
- Name:
- ietf-igmp-mld-proxy
- Namespace:
- urn:ietf:params:xml:ns:yang:ietf-igmp-mld-proxy
- Prefix:
- igmp-mld-proxy
- Reference:
- RFC 9398
7. References
7.1. Normative References
- [RFC3376]
-
B. Cain, S. Deering, I. Kouvelas, B. Fenner, and A. Thyagarajan, "Internet Group Management Protocol, Version 3", RFC 3376, DOI 10.17487/RFC3376, October 2002,
<https://www.rfc-editor.org/info/ >.rfc3376 - [RFC3688]
-
M. Mealling, "The IETF XML Registry", BCP 81, RFC 3688, DOI 10.17487/RFC3688, January 2004,
<https://www.rfc-editor.org/info/ >.rfc3688 - [RFC3810]
-
R. Vida, and L. Costa, "Multicast Listener Discovery Version 2 (MLDv2) for IPv6", RFC 3810, DOI 10.17487/RFC3810, June 2004,
<https://www.rfc-editor.org/info/ >.rfc3810 - [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, DOI 10.17487/RFC4605, August 2006,
<https://www.rfc-editor.org/info/ >.rfc4605 - [RFC6020]
-
M. Bjorklund, "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, DOI 10.17487/RFC6020, October 2010,
<https://www.rfc-editor.org/info/ >.rfc6020 - [RFC6241]
-
R. Enns, M. Bjorklund, J. Schoenwaelder, and A. Bierman, "Network Configuration Protocol (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
<https://www.rfc-editor.org/info/ >.rfc6241 - [RFC6242]
-
M. Wasserman, "Using the NETCONF Protocol over Secure Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, June 2011,
<https://www.rfc-editor.org/info/ >.rfc6242 - [RFC6991]
-
J. Schoenwaelder, "Common YANG Data Types", RFC 6991, DOI 10.17487/RFC6991, July 2013,
<https://www.rfc-editor.org/info/ >.rfc6991 - [RFC7950]
-
M. Bjorklund, "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, August 2016,
<https://www.rfc-editor.org/info/ >.rfc7950 - [RFC8040]
-
A. Bierman, M. Bjorklund, and K. Watsen, "RESTCONF Protocol", RFC 8040, DOI 10.17487/RFC8040, January 2017,
<https://www.rfc-editor.org/info/ >.rfc8040 - [RFC8294]
-
X. Liu, Y. Qu, A. Lindem, C. Hopps, and L. Berger, "Common YANG Data Types for the Routing Area", RFC 8294, DOI 10.17487/RFC8294, December 2017,
<https://www.rfc-editor.org/info/ >.rfc8294 - [RFC8341]
-
A. Bierman, and M. Bjorklund, "Network Configuration Access Control Model", STD 91, RFC 8341, DOI 10.17487/RFC8341, March 2018,
<https://www.rfc-editor.org/info/ >.rfc8341 - [RFC8342]
-
M. Bjorklund, J. Schoenwaelder, P. Shafer, K. Watsen, and R. Wilton, "Network Management Datastore Architecture (NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018,
<https://www.rfc-editor.org/info/ >.rfc8342 - [RFC8343]
-
M. Bjorklund, "A YANG Data Model for Interface Management", RFC 8343, DOI 10.17487/RFC8343, March 2018,
<https://www.rfc-editor.org/info/ >.rfc8343 - [RFC8349]
-
L. Lhotka, A. Lindem, and Y. Qu, "A YANG Data Model for Routing Management (NMDA Version)", RFC 8349, DOI 10.17487/RFC8349, March 2018,
<https://www.rfc-editor.org/info/ >.rfc8349 - [RFC8446]
-
E. Rescorla, "The Transport Layer Security (TLS) Protocol Version 1.3", RFC 8446, DOI 10.17487/RFC8446, August 2018,
<https://www.rfc-editor.org/info/ >.rfc8446 - [RFC8652]
-
X. Liu, F. Guo, M. Sivakumar, P. McAllister, and A. Peter, "A YANG Data Model for the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD)", RFC 8652, DOI 10.17487/RFC8652, November 2019,
<https://www.rfc-editor.org/info/ >.rfc8652 - [RFC9128]
-
X. Liu, P. McAllister, A. Peter, M. Sivakumar, Y. Liu, and F. Hu, "YANG Data Model for Protocol Independent Multicast (PIM)", RFC 9128, DOI 10.17487/RFC9128, October 2022,
<https://www.rfc-editor.org/info/ >.rfc9128
7.2. Informative References
- [RFC7761]
-
B. Fenner, M. Handley, H. Holbrook, I. Kouvelas, R. Parekh, Z. Zhang, and L. Zheng, "Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)", STD 83, RFC 7761, DOI 10.17487/RFC7761, March 2016,
<https://www.rfc-editor.org/info/ >.rfc7761 - [RFC7951]
-
L. Lhotka, "JSON Encoding of Data Modeled with YANG", RFC 7951, DOI 10.17487/RFC7951, August 2016,
<https://www.rfc-editor.org/info/ >.rfc7951 - [RFC8340]
-
M. Bjorklund, and L. Berger, "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
<https://www.rfc-editor.org/info/ >.rfc8340
Appendix A. Data Tree Example
This section contains an example for the IGMP Proxy, shown in JSON encoding [RFC 7951] and containing both configuration and state data. In the example, the IGMP Proxy is enabled on interface eth1/1.
The ability to enable IGMP on eth1/2 and eth1/3 is also needed. The configuration details are omitted here because this document is focused on IGMP/MLD Proxies.
The configuration data for R1 in the above figure could be as follows:
The corresponding operational state data for R1 could be as follows:
+-----------+
+ Source +
+-----+-----+
|
-----------------+----------------------------
|eth1/1
+---+----+
+ R1 +
+-+----+-+
eth1/2 | \ eth1/3
| \
| \
| \
---------------+---------+--------------------
| \
| \
+---------+--+ +---+--------+
+ Receiver 1 + + Receiver 2 +
+------------+ +------------+
{
"ietf-interfaces:interfaces": {
"interface": [
{
"name": "eth1/1",
"type": "iana-if-type:ipForward",
"ietf-ip:ipv4": {
"address": [
{
"ip": "203.0.113.1",
"prefix-length": 24
}
]
}
}
]
},
"ietf-routing:routing": {
"control-plane-protocols": {
"control-plane-protocol": [
{
"type": "ietf-igmp-mld-proxy:igmp-proxy",
"name": "proxy1",
"ietf-igmp-mld-proxy:igmp-proxy": {
"interfaces": {
"interface": [
{
"name": "eth1/1",
"igmp-version": 3,
"enabled": true
}
]
}
}
}
]
}
}
}
{
"ietf-interfaces:interfaces": {
"interface": [
{
"name": "eth1/1",
"type": "iana-if-type:ipForward",
"admin-status": "up",
"oper-status": "up",
"if-index": 25678136,
"statistics": {
"discontinuity-time": "2021-05-23T10:34:56-06:00"
},
"ietf-ip:ipv4": {
"address": [
{
"ip": "203.0.113.1",
"prefix-length": 24
}
]
}
}
]
},
"ietf-routing:routing": {
"control-plane-protocols": {
"control-plane-protocol": [
{
"type": "ietf-igmp-mld-proxy:igmp-proxy",
"name": "proxy1",
"ietf-igmp-mld-proxy:igmp-proxy": {
"interfaces": {
"interface": [
{
"name": "eth1/1",
"igmp-version": 3,
"enabled": true,
"group": [
{
"group-address": "233.252.0.23",
"filter-mode": "include",
"source": [
{
"source-address": "192.0.2.1",
"downstream-interface": [
{
"name": "eth1/2"
},
{
"name": "eth1/3"
}
]
}
]
}
]
}
]
}
}
}
]
}
}
}
Authors' Addresses
Hongji Zhao
Ericsson (China) Communications Company Ltd.
Ericsson Tower, No. 5 Lize East Street
Beijing 100102
China
Email: hongji.zhao@ericsson.com
Xufeng Liu
Alef Edge
United States of America
Email: xufeng.liu.ietf@gmail.com
Yisong Liu
China Mobile
China
Email: liuyisong@chinamobile.com
Mani Panchanathan
Cisco Systems, Inc.
3625 Cisco Way
San Jose CA
United States of America
Email: mapancha@cisco.com
Mahesh Sivakumar
Juniper Networks
1133 Innovation Way
Sunnyvale CA
United States of America
Email: sivakumar.mahesh@gmail.com
