Internet DRAFT - draft-ietf-mboned-amt-yang
draft-ietf-mboned-amt-yang
MBONED Working Group Y. Liu
Internet Draft China Mobile
Intended status: Standards Track C. Lin
Expires: July 9, 2024 New H3C Technologies
Z. Zhang
ZTE
X. Geng
Huawei
V. Kumar Nagaraj
Juniper Networks
January 9, 2024
YANG Data Model for Automatic Multicast Tunneling
draft-ietf-mboned-amt-yang-01
Abstract
This document defines YANG data models for the configuration and
management of Automatic Multicast Tunneling (AMT) protocol
operations.
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 https://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 July 9, 2024.
Copyright Notice
Copyright (c) 2024 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
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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.
Table of Contents
1. Introduction...................................................2
1.1. Terminology...............................................2
1.2. Conventions Used in This Document.........................3
1.3. Tree Diagrams.............................................3
1.4. Prefixes in Data Node Names...............................3
2. Model Overview.................................................4
3. AMT YANG Module................................................4
3.1. Tree View.................................................4
3.2. Yang Module...............................................6
4. Security Considerations.......................................20
5. IANA Considerations...........................................20
6. References....................................................20
6.1. Normative References.....................................20
6.2. Informative References...................................21
Authors' Addresses...............................................22
1. Introduction
[RFC7450] introduces the protocol definition of the Automatic
Multicast Tunneling (AMT) for delivering multicast traffic from
sources in a multicast-enabled network to receivers that lack
multicast connectivity to the source network. The protocol uses UDP
encapsulation and unicast replication to provide this functionality.
[RFC8777] updates [RFC7450] by modifying the relay discovery
process. It defines DNS Reverse IP AMT Discovery (DRIAD) mechanism
for AMT gateways to discover AMT relays that are capable of
forwarding multicast traffic from a known source IP address.
This document defines YANG data models for configuring and managing
AMT Protocol.
1.1. Terminology
The terminology for describing YANG data models is found in
[RFC6020] and [RFC7950], including:
o augment
o data model
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o data node
o identity
o module
The following abbreviations are used in this document and the
defined model:
AMT: Automatic Multicast Tunneling [RFC7450].
1.2. Conventions Used in This Document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in
BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
1.3. Tree Diagrams
Tree diagrams used in this document follow the notation defined in
[RFC8340].
1.4. Prefixes in Data Node Names
In this document, names of data nodes, actions, and other data model
objects are often used without a prefix, as long as it is clear from
the context in which YANG module each name is defined. Otherwise,
names are prefixed using the standard prefix associated with the
corresponding YANG module, as shown in Table 1.
+==============+========================+=======================+
| Prefix | YANG module | Reference |
+===============+=======================+=======================+
| inet | ietf-inet-types | [RFC6991] |
+---------------+-----------------------+-----------------------+
| rt-types | ietf-routing-types | [RFC8294] |
+---------------+-----------------------+-----------------------+
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| rt | ietf-routing | [RFC8349] |
+---------------+-----------------------+-----------------------+
| yang | ietf-yang-types | [RFC6991] |
+---------------+-----------------------+-----------------------+
| if | ietf-interfaces | [RFC8343] |
+---------------+-----------------------+-----------------------+
Table 1
2. Model Overview
AMT YANG data models are defined in this document.
The ietf-amt.yang data model provides the methods for configuring
and managing AMT Protocol. It includes:
o Parameters of AMT Relay service, such as Relay Discovery Address,
Relay Address, service switch, the maximum number of tunnels and
secret key timeout.
o Parameters of AMT gateway service, such as Relay Discovery
Address, Relay Address, Discovery Timeout, Request Timeout and
Maximum Retransmission Count.
o AMT tunnel information, such as endpoint address and UDP port,
local address and UDP port.
o DNS resource record used by AMTRELAY.
3. AMT YANG Module
3.1. Tree View
The complete tree of the ietf-amt.yang data model is represented as
following. See [RFC8340] for an explanation of the symbols used.
This model augments the core routing data model "ietf-routing"
specified in [RFC8349]. The AMT model augments
"/rt:routing/rt:control-plane-protocols".
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module: ietf-amt
augment /rt:routing/rt:control-plane-protocols:
+--rw amt!
+--rw relay
| +--rw relay-addresses
| | +--rw relay-address* [family]
| | +--rw family identityref
| | +--rw anycast-prefix inet:ip-address
| | +--rw local-address inet:ip-address
| +--rw tunnel-limit? uint32
| +--rw secret-key-timeout? uint32
| +--ro amt-tunnels
| | +--ro amt-tunnel* [gateway-address gateway-port]
| | +--ro gateway-address inet:ip-address
| | +--ro gateway-port inet:port-number
| | +--ro local-address inet:ip-address
| | +--ro local-port inet:port-number
| | +--ro state enumeration
| | +--ro multicastflows
| | | +--ro multicastflow* [source-address
| | | | group-address]
| | | +--ro source-address
| | | | ip-multicast-source-address
| | | +--ro group-address
| | | rt-types:ip-multicast-group-address
| | +--ro multicast-group-num uint32
| | +--ro request-message-count uint64
| | +--ro membership-query-message-count uint64
| | +--ro membership-update-message-count uint64
| +--rw amtrelay-dns-resource-records
| | +--rw amtrelay-dns-resource-record* [source-address]
| | +--rw source-address inet:ip-address
| | +--rw precedence? uint32
| | +--rw d-flag? boolean
| | +--rw relay-type? enumeration
| | +--rw discovery-address? inet:ip-address
| | +--rw domain-name? inet:domain-name
| +--ro amtrelay-message-statistics
| +--ro amtrelay-received-message-statistics
| +--ro relay-discovery uint64
| +--ro request uint64
| +--ro membership-update uint64
| +--ro teardown uint64
| +--ro amtrelay-sent-message-statistics
| +--ro relay-advertisement uint64
| +--ro membership-query uint64
| +--ro amtrelay-error-message-statistics
| +--ro incomplete-packet uint64
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| +--ro invalid-mac uint64
| +--ro unexpected-type uint64
| +--ro invalid-relay-discovery-address uint64
| +--ro invalid-membership-request-address uint64
| +--ro invalid-membership-update-address uint64
| +--ro incomplete-relay-discovery-messages uint64
| +--ro incomplete-membership-request-messages uint64
| +--ro incomplete-membership-update-messages uint64
| +--ro no-active-gateway uint64
| +--ro invalid-inner-header-checksum uint64
| +--ro gateways-timed-out uint64
+--rw gateway
+--rw pseudo-interfaces
| +--rw pseudo-interface* [ifIndex]
| +--rw ifIndex if:interface-ref
| +--rw discovery-method enumeration
| +--rw relay-discovery-address? inet:ip-address
| +--rw relay-address? inet:ip-address
| +--rw upstream-interface? if:interface-ref
| +--rw discovery-timeout? uint32
| +--rw discovery-retrans-count? uint32
| +--rw request-timeout? uint32
| +--rw request-retrans-count? uint32
| +--rw dest-unreach-retry-count? uint32
| +--rw relay-port? inet:port-number
| +--ro local-address? inet:ip-address
| +--ro local-port? inet:port-number
| +--ro tunnel-state enumeration
| +--ro relay-discovery-message-count uint64
| +--ro relay-advertisement-message-count uint64
| +--ro request-message-count uint64
| +--ro membership-query-message-count uint64
| +--ro membership-update-message-count uint64
+--ro amtgateway-message-statistics
+--ro amtgateway-received-message-statistics
| +--ro relay-advertisement uint64
| +--ro membership-query uint64
+--ro amtgateway-sent-message-statistics
+--ro relay-discovery uint64
+--ro request uint64
+--ro membership-update uint64
+--ro teardown uint64
3.2. Yang Module
<CODE BEGINS> file "ietf-amt@2022-11-17.yang"
module ietf-amt {
yang-version "1.1";
namespace "urn:ietf:params:xml:ns:yang:ietf-amt";
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prefix "amt";
import ietf-inet-types {
prefix "inet";
reference
"RFC 6991: Common YANG Data Types";
}
import ietf-routing-types {
prefix rt-types;
reference
"RFC 8294, Common YANG Data Types for the Routing Area.";
}
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).";
}
organization
"IETF MBONE Working Group";
contact
"TBD";
description
"This module describes a YANG model for configuring and managing
AMT Protocol.
This YANG model conforms to the Network Management
Datastore Architecture (NMDA) as described in RFC 8342.
Copyright (c) 2022 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
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(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX;
see the RFC itself for full legal notices.
The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL
NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED',
'MAY', and 'OPTIONAL' in this document are to be interpreted as
described in BCP 14 (RFC 2119) (RFC 8174) when, and only when,
they appear in all capitals, as shown here.";
revision 2022-11-17 {
description
"Initial Version";
reference
"RFC XXXX, YANG Data Model for Automatic Multicast Tunneling";
}
identity address-family {
description
"Base identity from which identities describing address
families are derived.";
}
typedef ip-multicast-source-address {
type union {
type rt-types:ipv4-multicast-source-address;
type rt-types:ipv6-multicast-source-address;
}
description
"This type represents a version-neutral IP multicast source
address. The format of the textual representation implies
the IP version.";
}
augment "/rt:routing/rt:control-plane-protocols" {
description
"AMT augmentation to the routing instance model.";
container amt {
description
"Configuration parameters for the AMT protocol.";
container relay {
description
"Parameters of AMT Relay service.";
container relay-addresses {
description
"Parameters of AMT Relay addresses.";
list relay-address {
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key "family";
description
"Each entry contains parameters for a AMT relay
Address identified by the 'family' key.";
leaf family {
type identityref {
base address-family;
}
mandatory true;
description
"The Address family.";
}
leaf anycast-prefix {
type inet:ip-address;
description
"The anycast IP address of AMT Relay Discovery
Address.";
}
leaf local-address {
type inet:ip-address;
description
"The unicast IP address of AMT Relay Address.";
}
}
}
leaf tunnel-limit {
type uint32;
description
"The total number of endpoints";
}
leaf secret-key-timeout {
type uint32;
description
"The timeout interval of secret key.";
}
container amt-tunnels {
config false;
description
"The AMT tunnel information on the relay.";
list amt-tunnel {
key "gateway-address gateway-port";
description
"An entry of AMT tunnel.";
leaf gateway-address {
type inet:ip-address;
description
"The IP address of AMT gateway.";
}
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leaf gateway-port {
type inet:port-number;
description
"The UDP port of AMT gateway.";
}
leaf local-address {
type inet:ip-address;
description
"The local IP address of AMT relay.";
}
leaf local-port {
type inet:port-number;
description
"The local UDP port of AMT relay.";
}
leaf state {
type enumeration {
enum up {
description
"The AMT tunnel has been successfully
established.";
}
enum establishing {
description
"The AMT tunnel is being establishing.";
}
}
description
"The state of AMT tunnel.";
}
container multicastflows {
config false;
description
"The multicast flow information in the AMT tunnel.";
list multicastflow {
key "source-address group-address";
description
"An entry of multicast flow.";
leaf source-address {
type ip-multicast-source-address;
description
"The source IP address of multicast flow.";
}
leaf group-address {
type rt-types:ip-multicast-group-address;
description
"The group address of multicast flow.";
}
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}
}
leaf multicast-group-num {
type uint32;
description
"Number of multicast groups.";
}
leaf request-message-count {
type uint64;
description
"Number of AMT request messages received
in the tunnel.";
}
leaf membership-query-message-count {
type uint64;
description
"Number of AMT membership query messages sent
in the tunnel.";
}
leaf membership-update-message-count {
type uint64;
description
"Number of AMT membership update messages received
in the tunnel.";
}
}
}
container amtrelay-dns-resource-records {
description
"The DNS resource records of AMT relay.";
list amtrelay-dns-resource-record {
key "source-address";
description
"An entry of AMTRELAY resource record.";
leaf source-address {
type inet:ip-address;
description
"The IP address of multicast sender.";
}
leaf precedence {
type uint32;
description
"The precedence of this record.";
}
leaf d-flag {
type boolean;
default "false";
description
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"If the D-bit is set to true, the gateway MAY
send an AMT Request message directly to the
discovered relay address without first
sending an AMT Discovery message.
If the D-bit is set to false, the gateway MUST
receive an AMT Relay Advertisement message
for an address before sending an AMT
Request message to that address.";
}
leaf relay-type {
type enumeration {
enum empty {
value "0";
description
"The relay field is empty.";
}
enum ipv4-address {
value "1";
description
"The relay field contains a 4-octet IPv4
address.";
}
enum ipv6-address {
value "2";
description
"The relay field contains a 16-octet IPv6
address.";
}
enum domain-name {
value "3";
description
"The relay field contains a wire-encoded
domain name.";
}
}
description
"The type of Relay address.";
}
leaf discovery-address {
type inet:ip-address;
description
"The IP address of AMT Relay Discovery Address.";
}
leaf domain-name {
type inet:domain-name;
description
"The wire-encoded domain name of AMT Relay.";
}
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}
}
container amtrelay-message-statistics {
config false;
description
"Message statistics of AMT Relay.";
container amtrelay-received-message-statistics {
description
"Received message statistics of AMT Relay.";
leaf relay-discovery {
type uint64;
description
"Number of AMT relay discovery messages
received.";
}
leaf request {
type uint64;
description
"Number of AMT membership request messages
received.";
}
leaf membership-update {
type uint64;
description
"Number of AMT membership update messages
received.";
}
leaf teardown {
type uint64;
description
"Number of AMT teardown messages received.";
}
}
container amtrelay-sent-message-statistics {
description
"Sent message statistics of AMT Relay.";
leaf relay-advertisement {
type uint64;
description
"Number of AMT relay advertisement messages sent.";
}
leaf membership-query {
type uint64;
description
"Number of AMT membership query messages sent.";
}
}
container amtrelay-error-message-statistics {
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description
"Error message statistics of AMT Relay.";
leaf incomplete-packet {
type uint64;
description
"Number of messages received with length errors
so severe that further classification could not
occur.";
}
leaf invalid-mac {
type uint64;
description
"Number of messages received with an invalid
message authentication code (MAC).";
}
leaf unexpected-type {
type uint64;
description
"Number of messages received with an unknown
message type specified.";
}
leaf invalid-relay-discovery-address {
type uint64;
description
"Number of AMT relay discovery messages
received with an address other than the
configured anycast address.";
}
leaf invalid-membership-request-address {
type uint64;
description
"Number of AMT membership request messages
received with an address other than the
configured AMT local address.";
}
leaf invalid-membership-update-address {
type uint64;
description
"Number of AMT membership update messages
received with an address other than the
configured AMT local address.";
}
leaf incomplete-relay-discovery-messages {
type uint64;
description
"Number of AMT relay discovery messages
received that are not fully formed.";
}
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leaf incomplete-membership-request-messages {
type uint64;
description
"Number of AMT membership request messages
received that are not fully formed.";
}
leaf incomplete-membership-update-messages {
type uint64;
description
"Number of AMT membership update messages
received that are not fully formed.";
}
leaf no-active-gateway {
type uint64;
description
"Number of AMT membership update messages
received for a tunnel that does not exist
for the gateway that sent the message.";
}
leaf invalid-inner-header-checksum {
type uint64;
description
"Number of AMT membership update messages
received with an invalid IP checksum.";
}
leaf gateways-timed-out {
type uint64;
description
"Number of gateways that timed out because
of inactivity.";
}
}
}
} // relay
container gateway {
description
"Parameters of AMT gateway service.";
container pseudo-interfaces {
description
"Parameters of AMT pseudo-interface.";
list pseudo-interface {
key ifIndex;
description
"An entry of AMT pseudo-interface.";
leaf ifIndex {
type if:interface-ref;
description
"Index of pseudo interface, which can be ifindex
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or interface name.";
}
leaf discovery-method {
type enumeration {
enum by-amt-solicit {
description
"Find the relay address by sending an AMT
Discovery message.";
}
enum by-dns-reverse-ip {
description
"Find the relay address by DNS reverse IP
AMT Discovery.";
}
}
description
"The method of discover relay address.";
}
leaf relay-discovery-address {
type inet:ip-address;
description
"The IP address of AMT Relay Discovery Address.";
}
leaf relay-address {
type inet:ip-address;
description
"The Ip address of AMT relay Address.";
}
leaf upstream-interface {
type if:interface-ref;
description
"The index of upstream interface, which can
be ifindex or interface name.";
}
leaf discovery-timeout {
type uint32;
description
"Initial time to wait for a response to
a Relay Discovery message.";
}
leaf discovery-retrans-count {
type uint32;
description
"Maximum number of Relay Discovery retransmissions
to allow before terminating relay discovery
and reporting an error.";
}
leaf request-timeout {
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type uint32;
description
"Initial time to wait for a response
to a Request message";
}
leaf request-retrans-count {
type uint32;
description
"Maximum number of Request retransmissions
to allow before abandoning a relay and restarting
relay discovery or reporting an error.";
}
leaf dest-unreach-retry-count {
type uint32;
description
"The maximum number of times a gateway should
attempt to send the same Request or Membership
Update message after receiving an ICMP Destination
Unreachable message.";
}
leaf relay-port {
type inet:port-number;
description
"The UDP port of AMT Relay.";
}
leaf local-address {
type inet:ip-address;
config false;
description
"The local IP address of this AMT tunnel.";
}
leaf local-port {
type inet:port-number;
config false;
description
"The local UDP port of this AMT tunnel.";
}
leaf tunnel-state {
type enumeration {
enum initial {
description
"Initial state.";
}
enum discoverying {
description
"The Relay Discovery message has been sent
and is waiting for the Advertisement message.";
}
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enum requesting {
description
"The Request message has been sent,
waiting for the Query message.";
}
enum up {
description
"The AMT tunnel is Established.";
}
}
config false;
description
"The tunnel's state.";
}
leaf relay-discovery-message-count {
type uint64;
config false;
description
"Number of AMT relay discovery messages sent
on the interface.";
}
leaf relay-advertisement-message-count {
type uint64;
config false;
description
"Number of AMT relay advertisement messages received
on the interface.";
}
leaf request-message-count {
type uint64;
config false;
description
"Number of AMT membership request messages sent
on the interface.";
}
leaf membership-query-message-count {
type uint64;
config false;
description
"Number of AMT membership query messages received
on the interface.";
}
leaf membership-update-message-count {
type uint64;
config false;
description
"Number of AMT membership update messages sent
on the interface.";
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}
}
}
container amtgateway-message-statistics {
config false;
description
"Message statistics of AMT Gateway.";
container amtgateway-received-message-statistics {
description
"Received message statistics of AMT Gateway.";
leaf relay-advertisement {
type uint64;
description
"Number of AMT relay advertisement messages
received.";
}
leaf membership-query {
type uint64;
description
"Number of AMT membership query messages
received.";
}
}
container amtgateway-sent-message-statistics {
description
"Sent message statistics of AMT Gateway.";
leaf relay-discovery {
type uint64;
description
"Number of AMT relay discovery messages sent.";
}
leaf request {
type uint64;
description
"Number of AMT membership request messages sent.";
}
leaf membership-update {
type uint64;
description
"Number of AMT membership update messages sent.";
}
leaf teardown {
type uint64;
description
"Number of AMT teardown messages sent.";
}
}
}
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} // gateway
} // amt
} // augment
}
<CODE ENDS>
4. Security Considerations
TBD
5. IANA Considerations
TBD
6. References
6.1. 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, <https://www.rfc-
editor.org/info/rfc2119>.
[RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types", RFC
6991, DOI 10.17487/RFC6991, July 2013, <https://www.rfc-
editor.org/info/rfc6991>.
[RFC8294] Liu, X., Qu, Y., Lindem, A., Hopps, C., 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>.
[RFC8349] Lhotka, L., Lindem, A., 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>.
[RFC7450] Bumgardner, G., " Automatic Multicast Tunneling ", RFC
7450, DOI 10.17487/RFC7450, February 2015,
<https://www.rfc-editor.org/info/rfc7450>.
[RFC8777] Holland, J., " DNS Reverse IP Automatic Multicast
Tunneling (AMT) Discovery ", RFC 8210, DOI
10.17487/RFC8777, April 2020, <https://www.rfc-
editor.org/info/rfc8777>.
[RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams",
BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
<https://www.rfc-editor.org/info/rfc8340>.
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6.2. Informative References
TBD
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Authors' Addresses
Yisong Liu
China Mobile
China
Email: liuyisong@chinamobile.com
Changwang Lin
New H3C Technologies
China
Email: linchangwang.04414@h3c.com
Zheng(Sandy) Zhang
ZTE Corporation
China
Email: zhang.zheng@zte.com.cn
Xuesong Geng
Huawei Technologies
China
Email: gengxuesong@huawei.com
Vinod Kumar Nagaraj
Juniper Networks
Email: vinkumar@juniper.net
liu, et al. Expires July, 2024 [Page 22]
