Internet DRAFT - draft-lee-teas-actn-vn-yang
draft-lee-teas-actn-vn-yang
TEAS Working Group Y. Lee (Editor)
Internet Draft Dhruv Dhody
Intended Status: Standard Track Huawei
Expires: November 29, 2018 D. Ceccarelli
Ericsson
Igor Bryskin
Huawei
Bin Yeong Yoon
ETRI
May 29, 2018
A Yang Data Model for ACTN VN Operation
draft-lee-teas-actn-vn-yang-13
Abstract
This document provides a YANG data model for the Abstraction and
Control of Traffic Engineered (TE) networks (ACTN) Virtual Network
Service (VNS) operation.
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Copyright Notice
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Copyright (c) 2018 IETF Trust and the persons identified as the
document authors. All rights reserved.
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warranty as described in the Simplified BSD License.
Table of Contents
1. Introduction...................................................3
1.1. Terminology...............................................4
2. ACTN CMI context...............................................4
2.1. Type 1 VN.................................................4
2.2. Type 2 VN.................................................5
3. High-Level Control Flows with Examples.........................6
3.1. Type 1 VN Illustration....................................6
3.2. Type 2 VN Illustration....................................8
4. Justification of the ACTN VN Model on the CMI.................10
4.1. Customer view of VN......................................10
4.2. Innovative Services......................................10
4.2.1. VN Compute..........................................10
4.2.2. Multi-sources and Multi-destinations................11
4.2.3. Others..............................................11
4.3. Summary..................................................12
5. ACTN VN YANG Model (Tree Structure)...........................12
6. ACTN-VN YANG Code.............................................15
7. JSON Example..................................................27
7.1. ACTN VN JSON.............................................28
7.2. TE-topology JSON.........................................33
8. Security Considerations.......................................49
9. IANA Considerations...........................................50
10. Acknowledgments..............................................50
11. References...................................................51
11.1. Normative References....................................51
11.2. Informative References..................................51
12. Contributors.................................................52
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Authors' Addresses...............................................52
1. Introduction
This document provides a YANG data model for the Abstraction and
Control of Traffic Engineered (TE) networks (ACTN) Virtual Network
Service (VNS) operation that is going to be implemented for the
Customer Network Controller (CNC)- Multi-Domain Service Coordinator
(MSDC) interface (CMI).
The YANG model on the CMI is also known as customer service model in
[Service-YANG]. The YANG model discussed in this document is used to
operate customer-driven VNs during the VN computation, VN
instantiation and its life-cycle management and operations.
The YANG model discussed in this document basically provides the
following:
o Characteristics of Access Points (APs) that describe customer's
end point characteristics;
o Characteristics of Virtual Network Access Points (VNAP) that
describe How an AP is partitioned for multiple VNs sharing the AP
and its reference to a Link Termination Point (LTP) of the
Provider Edge (PE) Node;
o Characteristics of Virtual Networks (VNs) that describe the
customer's VNs in terms of VN Members comprising a VN, multi-
source and/or multi-destination characteristics of VN Member, the
VN's reference to TE-topology's Abstract Node;
The actual VN instantiation is performed with Connectivity Matrices
sub-module of TE-Topology Model [TE-Topo] which interacts with the
VN YANG module presented in this draft. Once TE-topology Model is
used in triggering VN instantiation over the networks, TE-tunnel
[TE-tunnel] Model will inevitably interact with TE-Topology model
for setting up actual tunnels and LSPs under the tunnels.
The ACTN VN operational state is included in the same tree as the
configuration consistent with Network Management Datastore
Architecture (NMDA) [NMDA]. The origin of the data is indicated as
per the origin metadata annotation.
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1.1. Terminology
Refer to [ACTN-Frame] and [RFC7926] for the key terms used in this
document.
2. ACTN CMI context
The model presented in this document has the following ACTN context.
+-------+
| CNC |
+-------+
|
| VN YANG + TE-topology YANG
|
+-----------------------+
| MDSC |
+-----------------------+
Figure 1. ACTN CMI
Both ACTN VN YANG and TE-topology models are used over the CMI to
establish a VN over TE networks.
2.1. Type 1 VN
As defined in [ACTN-FW], a Virtual Network is a customer view of the
TE network. To recapitulate VN types from [ACTN-FW], Type 1 VN is
defined as follows:
The VN can be seen as a set of edge-to-edge links (a Type 1 VN).
Each link is referred to as a VN member and is formed as an end-to-
end tunnel across the underlying networks. Such tunnels may be
constructed by recursive slicing or abstraction of paths in the
underlying networks and can encompass edge points of the customer's
network, access links, intra-domain paths, and inter-domain links.
If we were to create a VN where we have four VN-members as follows:
VN-Member 1 L1-L4
VN-Member 2 L1-L7
VN-Member 3 L2-L4
VN-Member 4 L3-L8
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Where L1, L2, L3, L4, L7 and L8 correspond to a Customer
End-Point, respectively.
This VN can be modeled as one abstract node representation as
follows in Figure 2:
+---------------+
L1 ------| |------ L4
L2 ------| AN 1 |------ L7
L3 ------| |------ L8
+---------------+
Figure 2. Abstract Node (One node topology)
Modeling a VN as one abstract node is the easiest way for customers
to express their end-to-end connectivity; however, customers are not
limited to express their VN only with one abstract node. In some
cases, more than one abstract nodes can be employed to express their
VN.
2.2. Type 2 VN
For some VN members of a VN, the customers are allowed to configure
the actual path (i.e., detailed virtual nodes and virtual links)
over the VN/abstract topology agreed mutually between CNC and MDSC
prior to or a topology created by the MDSC as part of VN
instantiation. Type 2 VN is always built on top of a Type 1 VN.
If a Type 2 VN is desired for some or all of VN members of a type 1
VN (see the example in Section 2.1), the TE-topology model can
provide the following abstract topology (that consists of virtual
nodes and virtual links) which is built on top of the Type 1 VN.
+----------------------------------------------+
| S1 S2 |
| O---------------O |
| ________/ \______ \ |
| / \ \ |
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|S3 / \ S4 \ S5 |
L1----|-O----------------------O---------O-----------|------L4
| \ \ \ |
| \ \ \ |
| \ S6 \ S7 \ S8 |
| O ----------------O---------O-------|------L7
| / \ / \ ____/ |
|S9 / \ /S10 \ / |
L2-----|---O-----O---------------------O--------------|------L8
| / S11 |
L3-----|-- |
| |
+----------------------------------------------+
Figure 3. Type 2 topology
As you see from Figure 3, the Type 1 abstract node is depicted as a
Type 1 abstract topology comprising of detailed virtual nodes and
virtual links.
As an example, if VN-member 1 (L1-L4) is chosen to configure its own
path over Type 2 topology, it can select, say, a path that consists
of the ERO {S3,S4,S5} based on the topology and its service
requirement. This capability is enacted via TE-topology
configuration by the customer.
3. High-Level Control Flows with Examples
3.1. Type 1 VN Illustration
If we were to create a VN where we have four VN-members as follows:
VN-Member 1 L1-L4
VN-Member 2 L1-L7
VN-Member 3 L2-L4
VN-Member 4 L3-L8
Where L1, L2, L3, L4, L7 and L8 correspond to Customer End-Point,
respectively.
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This VN can be modeled as one abstract node representation as
follows:
+---------------+
L1 ------| |------ L4
L2 ------| AN 1 |------ L7
L3 ------| |------ L8
+---------------+
If this VN is Type 1, the following diagram shows the message flow
between CNC and MDSC to instantiate this VN using ACTN VN and TE-
Topology Model.
+--------+ +--------+
| CNC | | MDSC |
+--------+ +--------+
| |
| |
CNC POST TE-topo | POST /nw:networks/nw:network/ |
model(with Conn. | nw:node/te-node-id/tet:connectivity- |
Matrix on one | matrices/tet:connectivity-matrix |
Abstract node |---------------------------------------->|
| HTTP 200 |
|<----------------------------------------|
| |
CNC POST the ACTN| POST /ACTN VN |
VN identifying |---------------------------------------->| If there is
AP, VNAP and VN- | | multi-dest'n
Members and maps | | module, then
to the TE-topo | HTTP 200 | MDSC selects a
|<----------------------------------------| src or dest'n
| | and update
| | ACTN VN YANG
CNC GET the ACTN | GET /ACTN VN |
VN YANG status |---------------------------------------->|
| |
| HTTP 200 (ACTN VN with status: selected|
| VN-members in case of multi s-d |
|<----------------------------------------|
| |
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3.2. Type 2 VN Illustration
For some VN members, the customer may want to "configure" explicit
routes over the path that connects its two end-points. Let us
consider the following example.
VN-Member 1 L1-L4
VN-Member 2 L1-L7 (via S4 and S7)
VN-Member 3 L2-L4
VN-Member 4 L3-L8 (via S10)
Where the following topology is the underlay for Abstraction Node 1
(AN1).
S1 S2
O---------------O
________/ \______ \
/ \ \
S3 / \ S4 \ S5
L1------O----------------------O---------O------------------L4
\ \ \
\ \ \
\ S6 \ S7 \ S8
O ----------------O---------O--------------L5
/ \ / \ ____/ \_____________L6
S9 / \ /S10 \ /
L2---------O-----O---------------------O---------------------L7
/ S11\____________________L8
L3--------
If CNC creates the single abstract topology, the following diagram
shows the message flow between CNC and MDSC to instantiate this VN
using ACTN VN and TE-Topology Model.
+--------+ +--------+
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| CNC | | MDSC |
+--------+ +--------+
| |
| |
CNC POST TE-topo | POST /nw:networks/nw:network/ |
model(with Conn. | nw:node/te-node-id/tet:connectivity- |
Matrix on one | matrices/tet:connectivity-matrix |
Abstract node and|---------------------------------------->|
Explicit paths in| |
The conn. Matrix | HTTP 200 |
|<----------------------------------------|
| |
CNC POST the ACTN| POST /ACTN VN |
VN identifying |---------------------------------------->|
AP, VNAP and VN- | |
Members and maps | |
to the TE-topo | HTTP 200 |
|<----------------------------------------|
| |
| |
CNC GET the ACTN | GET /ACTN VN |
VN YANG status |---------------------------------------->|
| |
| HTTP 200 (ACTN VN with status) |
|<----------------------------------------|
| |
On the other hand, if MDSC create single node topology based ACTN VN
YANG posted by the CNC, the following diagram shows the message flow
between CNC and MDSC to instantiate this VN using ACTN VN and TE-
Topology Model.
+--------+ +--------+
| CNC | | MDSC |
+--------+ +--------+
| |
| |
CNC POST ACTN VN | |
Identifying AP, | |
VNAP and VN- | POST /ACTN VN | MDSC populates
Members |---------------------------------------->| a single Abst.
| HTTP 200 | node topology
|<----------------------------------------| by itself
| |
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CNC POST the ACTN| POST /ACTN VN |
VN identifying |---------------------------------------->|
AP, VNAP and VN- | |
Members and maps | |
to the TE-topo | HTTP 200 |
|<----------------------------------------|
| |
| |
CNC GET the ACTN | GET /ACTN VN |
VN YANG status |---------------------------------------->|
| |
| HTTP 200 (ACTN VN with status) |
|<----------------------------------------|
| |
4. Justification of the ACTN VN Model on the CMI.
4.1. Customer view of VN
The VN-Yang model allows to define a customer view, and allows the
customer to communicate using the VN constructs as described in the
[ACTN-INFO]. It also allows to group the set of edge-to-edge links
(i.e., VN members) under a common umbrella of VN. This allows the
customer to instantiate and view the VN as one entity, making it
easier for some customers to work on VN without worrying about the
details of the provider based YANG models.
This is similar to the benefits of having a separate YANG model for
the customer services as described in [SERVICE-YANG], which states
that service models do not make any assumption of how a service is
actually engineered and delivered for a customer.
4.2. Innovative Services
4.2.1. VN Compute
ACTN VN supports VN compute (pre-instantiation mode) to view the
full VN as a single entity before instantiation. Achieving this via
path computation or "compute only" tunnel setup does not provide the
same functionality.
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4.2.2. Multi-sources and Multi-destinations
In creating a virtual network, the list of sources or destinations
or both may not be pre-determined by the customer. For instance, for
a given source, there may be a list of multiple-destinations to
which the optimal destination may be chosen depending on the network
resource situations. Likewise, for a given destination, there may
also be multiple-sources from which the optimal source may be
chosen. In some cases, there may be a pool of multiple sources and
destinations from which the optimal source-destination may be
chosen. The following YANG module is shown for describing source
container and destination container. The following YANG tree shows
how to model multi-sources and multi-destinations.
+--rw actn
. . .
+--rw vn
+--rw vn-list* [vn-id]
+--rw vn-id uint32
+--rw vn-name? string
+--rw vn-topology-id? te-types:te-topology-id
+--rw abstract-node? -> /nw:networks/network/node/tet:te-node-id
+--rw vn-member-list* [vn-member-id]
| +--rw vn-member-id uint32
| +--rw src
| | +--rw src? -> /actn/ap/access-point-list/access-point-id
| | +--rw src-vn-ap-id? -> /actn/ap/access-point-list/vn-ap/vn-ap-id
| | +--rw multi-src? boolean {multi-src-dest}?
| +--rw dest
| | +--rw dest? -> /actn/ap/access-point-list/access-point-
id
| | +--rw dest-vn-ap-id? -> /actn/ap/access-point-list/vn-ap/vn-ap-id
| | +--rw multi-dest? boolean {multi-src-dest}?
| +--rw connetivity-matrix-id? -> /nw:networks/network/node/tet:te/te-
node-attributes/connectivity-matrices/connectivity-matrix/id
| +--ro oper-status? identityref
+--ro if-selected? boolean {multi-src-dest}?
+--rw admin-status? identityref
+--ro oper-status? identityref
4.2.3. Others
The VN Yang model can be easily augmented to support the mapping of
VN to the Services such as L3SM and L2SM as described in [TE-MAP].
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The VN Yang model can be extended to support telemetry, performance
monitoring and network autonomics as described in [ACTN-PM].
4.3. Summary
This section summarizes the innovative service features of the ACTN
VN Yang.
o Maintenance of AP and VNAP along with VN.
o VN construct to group of edge-to-edge links
o VN Compute (pre-instantiate)
o Multi-Source / Multi-Destination
o Ability to support various VN and VNS Types
* VN Type 1: Customer configures the VN as a set of VN
Members.
No other details need to be set by customer, making for a
simplified operations for the customer.
* VN Type 2: Along with VN Members, the customer could also
provide an abstract topology, this topology is provided by
the Abstract TE Topology Yang Model.
5. ACTN VN YANG Model (Tree Structure)
module: ietf-actn-vn
+--rw actn
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+--rw ap
| +--rw access-point-list* [access-point-id]
| +--rw access-point-id uint32
| +--rw access-point-name? string
| +--rw max-bandwidth? te-types:te-bandwidth
| +--rw avl-bandwidth? te-types:te-bandwidth
| +--rw vn-ap* [vn-ap-id]
| +--rw vn-ap-id uint32
| +--rw vn? -> /actn/vn/vn-list/vn-id
| +--rw abstract-node? ->
/nw:networks/network/node/tet:te-node-id
| +--rw ltp? te-types:te-tp-id
+--rw vn
+--rw vn-list* [vn-id]
+--rw vn-id uint32
+--rw vn-name? string
+--rw vn-topology-id? te-types:te-topology-id
+--rw abstract-node? ->
/nw:networks/network/node/tet:te-node-id
+--rw vn-member-list* [vn-member-id]
| +--rw vn-member-id uint32
| +--rw src
| | +--rw src? -> /actn/ap/access-point-
list/access-point-id
| | +--rw src-vn-ap-id? -> /actn/ap/access-point-
list/vn-ap/vn-ap-id
| | +--rw multi-src? boolean {multi-src-dest}?
| +--rw dest
| | +--rw dest? -> /actn/ap/access-point-
list/access-point-id
| | +--rw dest-vn-ap-id? -> /actn/ap/access-point-
list/vn-ap/vn-ap-id
| | +--rw multi-dest? boolean {multi-src-dest}?
| +--rw connetivity-matrix-id? ->
/nw:networks/network/node/tet:te/te-node-attributes/connectivity-
matrices/connectivity-matrix/id
| +--ro oper-status? identityref
+--ro if-selected? boolean {multi-src-dest}?
+--rw admin-status? identityref
+--ro oper-status? identityref
+--rw vn-level-diversity? vn-disjointness
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rpcs:
+---x vn-compute
+---w input
| +---w abstract-node? ->
/nw:networks/network/node/tet:te-node-id
| +---w vn-member-list* [vn-member-id]
| | +---w vn-member-id uint32
| | +---w src
| | | +---w src? -> /actn/ap/access-point-
list/access-point-id
| | | +---w src-vn-ap-id? -> /actn/ap/access-point-
list/vn-ap/vn-ap-id
| | | +---w multi-src? boolean {multi-src-dest}?
| | +---w dest
| | | +---w dest? -> /actn/ap/access-point-
list/access-point-id
| | | +---w dest-vn-ap-id? -> /actn/ap/access-point-
list/vn-ap/vn-ap-id
| | | +---w multi-dest? boolean {multi-src-dest}?
| | +---w connetivity-matrix-id? ->
/nw:networks/network/node/tet:te/te-node-attributes/connectivity-
matrices/connectivity-matrix/id
| +---w vn-level-diversity? vn-disjointness
+--ro output
+--ro vn-member-list* [vn-member-id]
+--ro vn-member-id uint32
+--ro src
| +--ro src? -> /actn/ap/access-point-
list/access-point-id
| +--ro src-vn-ap-id? -> /actn/ap/access-point-
list/vn-ap/vn-ap-id
| +--ro multi-src? boolean {multi-src-dest}?
+--ro dest
| +--ro dest? -> /actn/ap/access-point-
list/access-point-id
| +--ro dest-vn-ap-id? -> /actn/ap/access-point-
list/vn-ap/vn-ap-id
| +--ro multi-dest? boolean {multi-src-dest}?
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+--ro connetivity-matrix-id? ->
/nw:networks/network/node/tet:te/te-node-attributes/connectivity-
matrices/connectivity-matrix/id
+--ro if-selected? boolean {multi-src-
dest}?
+--ro compute-status? identityref
6. ACTN-VN YANG Code
The YANG code is as follows:
<CODE BEGINS> file "ietf-actn-vn@2018-02-27.yang"
module ietf-actn-vn {
namespace "urn:ietf:params:xml:ns:yang:ietf-actn-vn";
prefix "vn";
/* Import network */
import ietf-network {
prefix "nw";
}
/* Import TE generic types */
import ietf-te-types {
prefix "te-types";
}
/* Import Abstract TE Topology */
import ietf-te-topology {
prefix "tet";
}
organization
"IETF Traffic Engineering Architecture and Signaling (TEAS)
Working Group";
contact
"Editor: Young Lee <leeyoung@huawei.com>
: Dhruv Dhody <dhruv.ietf@gmail.com>";
description
"This module contains a YANG module for the ACTN VN. It
describes a VN operation module that takes place in the
context of the CNC-MDSC Interface (CMI) of the ACTN
architecture where the CNC is the actor of a VN
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Instantiation/modification /deletion.";
revision 2018-02-27 {
description
"initial version.";
reference
"TBD";
}
/*
* Features
*/
feature multi-src-dest {
description
"Support for selection of one src or destination
among multiple.";
}
/*identity path-metric-delay {
base te-types:path-metric-type;
description
"delay path metric";
}
identity path-metric-delay-variation {
base te-types:path-metric-type;
description
"delay-variation path metric";
}
identity path-metric-loss {
base te-types:path-metric-type;
description
"loss path metric";
}*/
identity vn-state-type {
description
"Base identity for VN state";
}
identity vn-state-up {
base vn-state-type;
description "VN state up";
}
identity vn-state-down {
base vn-state-type;
description "VN state down";
}
identity vn-admin-state-type {
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description
"Base identity for VN admin states";
}
identity vn-admin-state-up {
base vn-admin-state-type;
description "VN administratively state up";
}
identity vn-admin-state-down {
base vn-admin-state-type;
description "VN administratively state down";
}
identity vn-compute-state-type {
description
"Base identity for compute states";
}
identity vn-compute-state-computing {
base vn-compute-state-type;
description
"State path compute in progress";
}
identity vn-compute-state-computation-ok {
base vn-compute-state-type;
description
"State path compute successful";
}
identity vn-compute-state-computatione-failed {
base vn-compute-state-type;
description
"State path compute failed";
}
/*
* Groupings
*/
typedef vn-disjointness {
type bits {
bit node {
position 0;
description "node disjoint";
}
bit link {
position 1;
description "link disjoint";
}
bit srlg {
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position 2;
description "srlg disjoint";
}
}
description
"type of the resource disjointness for
VN level applied across all VN members
in a VN";
}
grouping vn-ap {
description
"VNAP related information";
leaf vn-ap-id {
type uint32;
description
"unique identifier for the referred
VNAP";
}
leaf vn {
type leafref {
path "/actn/vn/vn-list/vn-id";
}
description
"reference to the VN";
}
leaf abstract-node {
type leafref {
path "/nw:networks/nw:network/nw:node/"
+ "tet:te-node-id";
}
description
"a reference to the abstract node in TE
Topology";
}
leaf ltp {
type te-types:te-tp-id;
description
"Reference LTP in the TE-topology";
}
}
grouping access-point{
description
"AP related information";
leaf access-point-id {
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type uint32;
description
"unique identifier for the referred
access point";
}
leaf access-point-name {
type string;
description
"ap name";
}
leaf max-bandwidth {
type te-types:te-bandwidth;
description
"max bandwidth of the AP";
}
leaf avl-bandwidth {
type te-types:te-bandwidth;
description
"available bandwidth of the AP";
}
/*add details and any other properties of AP,
not associated by a VN
CE port, PE port etc.
*/
list vn-ap {
key vn-ap-id;
uses vn-ap;
description
"list of VNAP in this AP";
}
}//access-point
grouping vn-member {
description
"vn-member is described by this container";
leaf vn-member-id {
type uint32;
description
"vn-member identifier";
}
container src
{
description
"the source of VN Member";
leaf src {
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type leafref {
path "/actn/ap/access-point-list/access-point-id";
}
description
"reference to source AP";
}
leaf src-vn-ap-id{
type leafref {
path "/actn/ap/access-point-list/vn-ap/vn-ap-id";
}
description
"reference to source VNAP";
}
leaf multi-src {
if-feature multi-src-dest;
type boolean;
description
"Is source part of multi-source, where
only one of the source is enabled";
}
}
container dest
{
description
"the destination of VN Member";
leaf dest {
type leafref {
path "/actn/ap/access-point-list/access-point-id";
}
description
"reference to destination AP";
}
leaf dest-vn-ap-id{
type leafref {
path "/actn/ap/access-point-list/vn-ap/vn-ap-id";
}
description
"reference to dest VNAP";
}
leaf multi-dest {
if-feature multi-src-dest;
type boolean;
description
"Is destination part of multi-destination, where
only one of the destination is enabled";
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}
}
leaf connetivity-matrix-id{
type leafref {
path "/nw:networks/nw:network/nw:node/tet:te/"
+ "tet:te-node-attributes/"
+ "tet:connectivity-matrices/"
+ "tet:connectivity-matrix/tet:id";
}
description
"reference to connetivity-matrix";
}
}//vn-member
/*
grouping policy {
description
"policy related to vn-member-id";
leaf local-reroute {
type boolean;
description
"Policy to state if reroute
can be done locally";
}
leaf push-allowed {
type boolean;
description
"Policy to state if changes
can be pushed to the customer";
}
leaf incremental-update {
type boolean;
description
"Policy to allow only the
changes to be reported";
}
}//policy
*/
grouping vn-policy {
description
"policy for VN-level diverisity";
leaf vn-level-diversity {
type vn-disjointness;
description
"the type of disjointness on the VN level
(i.e., across all VN members)";
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}
}
/*
grouping metrics-op {
description
"metric related information";
list metric{
key "metric-type";
config false;
description
"The list of metrics for VN";
leaf metric-type {
type identityref {
base te-types:path-metric-type;
}
description
"The VN metric type.";
}
leaf value{
type uint32;
description
"The limit value";
}
}
}
*/
/*
grouping metrics {
description
"metric related information";
list metric{
key "metric-type";
description
"The list of metrics for VN";
uses te:path-metrics-bounds_config;
container optimize{
description
"optimizing constraints";
leaf enabled{
type boolean;
description
"Metric to optimize";
}
leaf value{
type uint32;
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description
"The computed value";
}
}
}
}
*/
/*
grouping service-metric {
description
"service-metric";
uses te:path-objective-function_config;
uses metrics;
uses te-types:common-constraints_config;
uses te:protection-restoration-params_config;
uses policy;
}//service-metric
*/
/*
* Configuration data nodes
*/
container actn {
description
"actn is described by this container";
container ap {
description
"AP configurations";
list access-point-list {
key "access-point-id";
description
"access-point identifier";
uses access-point{
description
"access-point information";
}
}
}
container vn {
description
"VN configurations";
list vn-list {
key "vn-id";
description
"a virtual network is identified by a vn-id";
leaf vn-id {
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type uint32;
description
"a unique vn identifier";
}
leaf vn-name {
type string;
description "vn name";
}
leaf vn-topology-id{
type te-types:te-topology-id;
description
"An optional identifier to the TE Topology
Model where the abstract nodes and links
of the Topology can be found for Type 2
VNS";
}
leaf abstract-node {
type leafref {
path "/nw:networks/nw:network/nw:node/"
+ "tet:te-node-id";
}
description
"a reference to the abstract node in TE
Topology";
}
list vn-member-list{
key "vn-member-id";
description
"List of VN-members in a VN";
uses vn-member;
/*uses metrics-op;*/
leaf oper-status {
type identityref {
base vn-state-type;
}
config false;
description
"VN-member operational state.";
}
}
leaf if-selected{
if-feature multi-src-dest;
type boolean;
default false;
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config false;
description
"Is the vn-member is selected among the
multi-src/dest options";
}
/*
container multi-src-dest{
if-feature multi-src-dest;
config false;
description
"The selected VN Member when multi-src
and/or mult-destination is enabled.";
leaf selected-vn-member{
type leafref {
path "/actn/vn/vn-list/vn-member-list"
+ "/vn-member-id";
}
description
"The selected VN Member along the set
of source and destination configured
with multi-source and/or multi-destination";
}
}
*/
/*uses service-metric;*/
leaf admin-status {
type identityref {
base vn-admin-state-type;
}
default vn-admin-state-up;
description "VN administrative state.";
}
leaf oper-status {
type identityref {
base vn-state-type;
}
config false;
description "VN operational state.";
}
uses vn-policy;
}//vn-list
}//vn
}//actn
/*
* Notifications - TBD
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*/
/*
* RPC
*/
rpc vn-compute{
description
"The VN computation without actual
instantiation";
input {
leaf abstract-node {
type leafref {
path "/nw:networks/nw:network/nw:node/"
+ "tet:te-node-id";
}
description
"a reference to the abstract node in TE
Topology";
}
list vn-member-list{
key "vn-member-id";
description
"List of VN-members in a VN";
uses vn-member;
}
uses vn-policy;
/*uses service-metric;*/
}
output {
list vn-member-list{
key "vn-member-id";
description
"List of VN-members in a VN";
uses vn-member;
leaf if-selected{
if-feature multi-src-dest;
type boolean;
default false;
description
"Is the vn-member is selected among
the multi-src/dest options";
}
/*uses metrics-op;*/
leaf compute-status {
type identityref {
base vn-compute-state-type;
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}
description
"VN-member compute state.";
}
}
/*
container multi-src-dest{
if-feature multi-src-dest;
description
"The selected VN Member when multi-src
and/or mult-destination is enabled.";
leaf selected-vn-member-id{
type uint32;
description
"The selected VN Member-id from the
input";
}
}*/
}
}
}
<CODE ENDS>
7. JSON Example
This section provides json implementation examples as to how ACTN VN
YANG model and TE topology model are used together to instantiate
virtual networks.
The example in this section includes following VN
o VN1 (Type 1): Which maps to the single node topology abstract1
(node D1) and consist of VN Members 104 (L1 to L4), 107 (L1 to
L7), 204 (L2 to L4), 308 (L3 to L8) and 108 (L1 to L8). We also
show how disjointness (node, link, srlg) is supported in the
example on the global level (i.e., connectivity matrices level).
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o VN2 (Type 2): Which maps to the single node topology abstract2
(node D2), this topology has an underlay topology (absolute) (see
figure in section 3.2). This VN has a single VN member 105 (L1 to
L5) and an underlay path (S4 and S7) has been set in the
connectivity matrix of abstract2 topology;
o VN3 (Type 1): This VN has a multi-source, multi-destination
feature enable for VN Member 104 (L1 to L4)/107 (L1 to L7)
[multi-src] and VN Member 204 (L2 to L4)/304 (L3 to L4) [multi-
dest] usecase. The selected VN-member is known via the field "if-
selected" and the corresponding connectivity-matrix-id.
Note that the ACTN VN YANG model also include the AP and VNAP which
shows various VN using the same AP.
7.1. ACTN VN JSON
{
"actn":{
"ap":{
"access-point-list": [
{
"access-point-id": 101,
"access-point-name": "101",
"vn-ap": [
{
"vn-ap-id": 10101,
"vn": 1,
"abstract-node": "D1",
"ltp": "1-0-1"
},
{
"vn-ap-id": 10102,
"vn": 2,
"abstract-node": "D2",
"ltp": "1-0-1"
},
{
"vn-ap-id": 10103,
"vn": 3,
"abstract-node": "D3",
"ltp": "1-0-1"
},
]
},
{
"access-point-id": 202,
"access-point-name": "202",
"vn-ap": [
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{
"vn-ap-id": 20201,
"vn": 1,
"abstract-node": "D1",
"ltp": "2-0-2"
}
]
},
{
"access-point-id": 303,
"access-point-name": "303",
"vn-ap": [
{
"vn-ap-id": 30301,
"vn": 1,
"abstract-node": "D1",
"ltp": "3-0-3"
},
{
"vn-ap-id": 30303,
"vn": 3,
"abstract-node": "D3",
"ltp": "3-0-3"
}
]
},
{
"access-point-id": 440,
"access-point-name": "440",
"vn-ap": [
{
"vn-ap-id": 44001,
"vn": 1,
"abstract-node": "D1",
"ltp": "4-4-0"
}
]
},
{
"access-point-id": 550,
"access-point-name": "550",
"vn-ap": [
{
"vn-ap-id": 55002,
"vn": 2,
"abstract-node": "D2",
"ltp": "5-5-0"
}
]
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},
{
"access-point-id": 770,
"access-point-name": "770",
"vn-ap": [
{
"vn-ap-id": 77001,
"vn": 1,
"abstract-node": "D1",
"ltp": "7-7-0"
},
{
"vn-ap-id": 77003,
"vn": 3,
"abstract-node": "D3",
"ltp": "7-7-0"
}
]
},
{
"access-point-id": 880,
"access-point-name": "880",
"vn-ap": [
{
"vn-ap-id": 88001,
"vn": 1,
"abstract-node": "D1",
"ltp": "8-8-0"
},
{
"vn-ap-id": 88003,
"vn": 3,
"abstract-node": "D3",
"ltp": "8-8-0"
}
]
}
]
},
"vn":{
"vn-list": [
{
"vn-id": 1,
"vn-name": "vn1",
"vn-topology-id": "te-topology:abstract1",
"abstract-node": "D1",
"vn-member-list": [
{
"vn-member-id": 104,
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"src": {
"src": 101,
"src-vn-ap-id": 10101,
},
"dest": {
"dest": 440,
"dest-vn-ap-id": 44001,
},
"connectivity-matrix-id": 104
},
{
"vn-member-id": 107,
"src": {
"src": 101,
"src-vn-ap-id": 10101,
},
"dest": {
"dest": 770,
"dest-vn-ap-id": 77001,
},
"connectivity-matrix-id": 107
},
{
"vn-member-id": 204,
"src": {
"src": 202,
"dest-vn-ap-id": 20401,
},
"dest": {
"dest": 440,
"dest-vn-ap-id": 44001,
},
"connectivity-matrix-id": 204
},
{
"vn-member-id": 308,
"src": {
"src": 303,
"src-vn-ap-id": 30301,
},
"dest": {
"dest": 880,
"src-vn-ap-id": 88001,
},
"connectivity-matrix-id": 308
},
{
"vn-member-id": 108,
"src": {
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"src": 101,
"src-vn-ap-id": 10101,
},
"dest": {
"dest": 880,
"dest-vn-ap-id": 88001,
},
"connectivity-matrix-id": 108
}
]
},
{
"vn-id": 2,
"vn-name": "vn2",
"vn-topology-id": "te-topology:abstract2",
"abstract-node": "D2",
"vn-member-list": [
{
"vn-member-id": 105,
"src": {
"src": 101,
"src-vn-ap-id": 10102,
},
"dest": {
"dest": 550,
"dest-vn-ap-id": 55002,
},
"connectivity-matrix-id": 105
}
]
},
{
"vn-id": 3,
"vn-name": "vn3",
"vn-topology-id": "te-topology:abstract3",
"abstract-node": "D3",
"vn-member-list": [
{
"vn-member-id": 104,
"src": {
"src": 101,
},
"dest": {
"dest": 440,
"multi-dest": true
}
},
{
"vn-member-id": 107,
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"src": {
"src": 101,
"src-vn-ap-id": 10103,
},
"dest": {
"dest": 770,
"dest-vn-ap-id": 77003,
"multi-dest": true
},
"connectivity-matrix-id": 107,
"if-selected":true,
},
{
"vn-member-id": 204,
"src": {
"src": 202,
"multi-src": true,
},
"dest": {
"dest": 440,
},
},
{
"vn-member-id": 304,
"src": {
"src": 303,
"src-vn-ap-id": 30303,
"multi-src": true,
},
"dest": {
"dest": 440,
"src-vn-ap-id": 44003,
},
"connectivity-matrix-id": 304,
"if-selected":true,
},
]
},
]
}
}
}
7.2. TE-topology JSON
{
"networks": {
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"network": [
{
"network-types": {
"te-topology": {}
},
"network-id": "abstract1",
"provider-id": 201,
"client-id": 600,
"te-topology-id": "te-topology:abstract1",
"node": [
{
"node-id": "D1",
"te-node-id": "2.0.1.1",
"te": {
"te-node-attributes": {
"domain-id" : 1,
"is-abstract": [null],
"connectivity-matrices": {
"is-allowed": true,
"path-constraints": {
"bandwidth-generic": {
"te-bandwidth": {
"generic": [
{
"generic": "0x1p10",
}
]
}
}
"disjointness": "node link srlg",
},
"connectivity-matrix": [
{
"id": 104,
"from": "1-0-1",
"to": "4-4-0"
},
{
"id": 107,
"from": "1-0-1",
"to": "7-7-0"
},
{
"id": 204,
"from": "2-0-2",
"to": "4-4-0"
},
{
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"id": 308,
"from": "3-0-3",
"to": "8-8-0"
},
{
"id": 108,
"from": "1-0-1",
"to": "8-8-0"
},
]
}
}
},
"termination-point": [
{
"tp-id": "1-0-1",
"te-tp-id": 10001,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "1-1-0",
"te-tp-id": 10100,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "2-0-2",
"te-tp-id": 20002,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
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},
{
"tp-id": "2-2-0",
"te-tp-id": 20200,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "3-0-3",
"te-tp-id": 30003,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "3-3-0",
"te-tp-id": 30300,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "4-0-4",
"te-tp-id": 40004,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
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{
"tp-id": "4-4-0",
"te-tp-id": 40400,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "5-0-5",
"te-tp-id": 50005,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "5-5-0",
"te-tp-id": 50500,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "6-0-6",
"te-tp-id": 60006,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
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"tp-id": "6-6-0",
"te-tp-id": 60600,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "7-0-7",
"te-tp-id": 70007,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "7-7-0",
"te-tp-id": 70700,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "8-0-8",
"te-tp-id": 80008,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "8-8-0",
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"te-tp-id": 80800,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
}
]
}
]
},
{
"network-types": {
"te-topology": {}
},
"network-id": "abstract2",
"provider-id": 201,
"client-id": 600,
"te-topology-id": "te-topology:abstract2",
"node": [
{
"node-id": "D2",
"te-node-id": "2.0.1.2",
"te": {
"te-node-attributes": {
"domain-id" : 1,
"is-abstract": [null],
"connectivity-matrices": {
"is-allowed": true,
"underlay": {
"enabled": true
},
"path-constraints": {
"bandwidth-generic": {
"te-bandwidth": {
"generic": [
{
"generic": "0x1p10"
}
]
}
}
},
"optimizations": {
"objective-function": {
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"objective-function-type": "of-maximize-residual-
bandwidth"
}
},
"connectivity-matrix": [
{
"id": 105,
"from": "1-0-1",
"to": "5-5-0",
"underlay": {
"enabled": true,
"primary-path": {
"network-ref": "absolute",
"path-element": [
{
"path-element-id": 1,
"index": 1,
"numbered-hop": {
"address": "4.4.4.4",
"hop-type": "STRICT"
}
},
{
"path-element-id": 2,
"index": 2,
"numbered-hop": {
"address": "7.7.7.7",
"hop-type": "STRICT"
}
}
]
}
}
}
]
}
}
},
"termination-point": [
{
"tp-id": "1-0-1",
"te-tp-id": 10001,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
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}
},
{
"tp-id": "1-1-0",
"te-tp-id": 10100,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "2-0-2",
"te-tp-id": 20002,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "2-2-0",
"te-tp-id": 20200,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "3-0-3",
"te-tp-id": 30003,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
Lee, et al. Expires November 2018 [Page 41]
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},
{
"tp-id": "3-3-0",
"te-tp-id": 30300,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "4-0-4",
"te-tp-id": 40004,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "4-4-0",
"te-tp-id": 40400,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "5-0-5",
"te-tp-id": 50005,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
Lee, et al. Expires November 2018 [Page 42]
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{
"tp-id": "5-5-0",
"te-tp-id": 50500,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "6-0-6",
"te-tp-id": 60006,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "6-6-0",
"te-tp-id": 60600,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "7-0-7",
"te-tp-id": 70007,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
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"tp-id": "7-7-0",
"te-tp-id": 70700,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "8-0-8",
"te-tp-id": 80008,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "8-8-0",
"te-tp-id": 80800,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
}
]
}
]
},
{
"network-types": {
"te-topology": {}
},
"network-id": "abstract3",
"provider-id": 201,
"client-id": 600,
"te-topology-id": "te-topology:abstract3",
"node": [
{
Lee, et al. Expires November 2018 [Page 44]
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"node-id": "D3",
"te-node-id": "3.0.1.1",
"te": {
"te-node-attributes": {
"domain-id" : 3,
"is-abstract": [null],
"connectivity-matrices": {
"is-allowed": true,
"path-constraints": {
"bandwidth-generic": {
"te-bandwidth": {
"generic": [
{
"generic": "0x1p10",
}
]
}
}
},
"connectivity-matrix": [
{
"id": 107,
"from": "1-0-1",
"to": "7-7-0"
},
{
"id": 308,
"from": "3-0-3",
"to": "8-8-0"
},
]
}
}
},
"termination-point": [
{
"tp-id": "1-0-1",
"te-tp-id": 10001,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "1-1-0",
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"te-tp-id": 10100,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "2-0-2",
"te-tp-id": 20002,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "2-2-0",
"te-tp-id": 20200,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "3-0-3",
"te-tp-id": 30003,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "3-3-0",
"te-tp-id": 30300,
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"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "4-0-4",
"te-tp-id": 40004,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "4-4-0",
"te-tp-id": 40400,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "5-0-5",
"te-tp-id": 50005,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "5-5-0",
"te-tp-id": 50500,
"te": {
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"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "6-0-6",
"te-tp-id": 60006,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "6-6-0",
"te-tp-id": 60600,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "7-0-7",
"te-tp-id": 70007,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "7-7-0",
"te-tp-id": 70700,
"te": {
"interface-switching-capability": [
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{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "8-0-8",
"te-tp-id": 80008,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
},
{
"tp-id": "8-8-0",
"te-tp-id": 80800,
"te": {
"interface-switching-capability": [
{
"switching-capability": "switching-otn",
"encoding": "lsp-encoding-oduk"
}
]
}
}
]
}
]
},
]
}
}
8. Security Considerations
TDB
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9. IANA Considerations
TDB
10. Acknowledgments
The authors would like to thank Xufeng Liu for his helpful comments
and valuable suggestions.
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11. References
11.1. Normative References
[TE-TOPO] X. Liu, et al., "YANG Data Model for TE Topologies", work
in progress: draft-ietf-teas-yang-te-topo.
[TE-tunnel] T. Saad, et al., "A YANG Data Model for Traffic
Engineering Tunnels and Interfaces", work in progress:
draft-ietf-teas-yang-te.
11.2. Informative References
[RFC7926] A. Farrel (Ed.), "Problem Statement and Architecture for
Information Exchange between Interconnected Traffic-
Engineered Networks", RFC 7926, July 2016.
[ACTN-REQ] Lee, et al., "Requirements for Abstraction and Control of
TE Networks", draft-ietf-teas-actn-requirements, work in
progress.
[ACTN-FWK] D. Ceccarelli, Y. Lee [Editors], "Framework for
Abstraction and Control of Traffic Engineered Networks",
draft-ceccarelli-teas-actn-framework, work in progress.
[TE-MAP] Y. Lee, D. Dhody, and D. Ceccarelli, "Traffic Engineering
and Service Mapping Yang Model", draft-lee-teas-te-
service-mapping-yang, work in progress.
[SERVICE-YANG] Q. Wu, W. Liu and A. Farrel, "Service Models
Explained", draft-wu-opsawg-service-model-explained,
work in progress.
[ACTN-PM] Y. Lee, et al., "YANG models for ACTN TE Performance
Monitoring Telemetry and Network Autonomics", draft-lee-
teas-actn-pm-telemetry-autonomics, work in progress.
[OIF-VTNS] Virtual Transport Network Services 1.0 Specification, IA
OIF-VTNS-1.0, April 2017.
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12. Contributors
Contributor's Addresses
Haomian Zheng
Huawei Technologies
Email: zhenghaomian@huawei.com
Xian Zhang
Huawei Technologies
Email: zhang.xian@huawei.com
Sergio Belotti
Nokia
Email: sergio.belotti@nokia.com
Qin Wu
Huawei Technologies
Email: bill.wu@huawei.com
Takuya Miyasaka
KDDI
Email: ta-miyasaka@kddi.com
Peter Park
KT
Email: peter.park@kt.com
Authors' Addresses
Young Lee (ed.)
Huawei Technologies
Email: leeyoung@huawei.com
Dhruv Dhody
Huawei Technologies
Email: dhruv.ietf@gmail.com
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Daniele Ceccarelli
Ericsson
Torshamnsgatan,48
Stockholm, Sweden
Email: daniele.ceccarelli@ericsson.com
Igor Bryskin
Huawei
Email: Igor.Bryskin@huawei.com
Bin Yeong Yoon
ETRI
Email: byyun@etri.re.kr
Lee, et al. Expires November 2018 [Page 53]
