Network Working Group D. Shytyi
Internet-Draft Ecole Polytechnique/Telecom ParisTech
Intended status: Informational L. Beylier
Expires: March 21, 2019 SFR/ALTICE
L. IANNONE
Telecom ParisTech
September 17, 2018
Virtualization YANG Servise Model (VYSM)
draft-shytyi-netmod-vysm-00.txt
Abstract
This document provides a specification of the Network Function
Virtualization (NFV) YANG service model. The NFV service module
serves as a base framework for managing an universal Customer-
Premises Equipment (uCPE) NFV subsystem from the Orchestrator.
Status of This Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. NFV service module Tree Diagram overview . . . . . . . . . . 2
4. Specification of the NFV service model . . . . . . . . . . . 3
5. Security Considerations . . . . . . . . . . . . . . . . . . . 7
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
7. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 7
8. Normative References . . . . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
Network Function Virtualization is a technology that allows to
virtualize the network services running on dedicaded hardware. This
technology became a base for universal Customer-Premises
Equipment(uCPE). The uCPE - is x86 universal harware (whitebox) that
has a hypervisor. In other words, uCPE is a host that may run
multiple Virtual Machines with guest OSs. Each Guest OS may
represent a Physical Network Function. To manage from an
Orchestrator the Network Function Virtualization Infrastructure
inside the uCPE, the VNF YANG service model (VYSM) was developed.
2. Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119].
Link - is an entity that enables link layer communication of nodes.
Port - node connector to the link.
3. NFV service module Tree Diagram overview
This section provides an overview of of the NFV service MAY be made
with "pyang" utility. The figure below presents the Tree diagram of
the NFV service module.
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module: ietf-nfv-service
+--rw virtualization* [name]
+--rw name string
+--rw device* string
+--rw links* [link]
| +--rw link string
+--rw interfaces* [interface]
| +--rw interface string
| +--rw ports* [port]
| +--rw port string
| +--rw link? -> ../../../links/link
+--rw switches* [switch]
| +--rw switch string
| +--rw ports* [port]
| +--rw port string
| +--rw name? string
| +--rw link? -> ../../../links/link
+--rw vms* [vm]
+--rw vm string
+--rw ports* [port]
| +--rw port string
| +--rw name? string
| +--rw link? -> ../../../links/link
+--rw ram? string
+--rw cpu? string
+--rw storages* [id]
+--rw id string
+--rw location? string
4. Specification of the NFV service model
This section presents the specification of the NFV service model.
<CODE BEGINS> file "ietf-nfv-service@2018-07-01.yang"
module ietf-nfv-service {
namespace "urn:ietf:params:xml:ns:yang:nfv-service";
prefix nfv-service;
organization
"Ecole Polytechnique/Telecom ParisTech/SFR";
contact
"Dmytro Shytyi
EMail:ietf.dmytro@shytyi.net";
description
"This is a Network Function Virtualization (NFV) YANG
service model.";
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revision 2018-07-01 {
description
"Initial revision.";
reference
"draft-shytyi-netmod-vysm-00";
}
list virtualization {
key name;
leaf name {
type string;
description "Name of the instance of the service";
}
// may replace this with other ways of refering to the devices.
leaf-list device {
type string;
description "List of the devices in available in the
orchestrator";
}
list links{
key link;
leaf link{
type string;
description "Name of the virtual link from the pool
of the links";
}
description "Pool of the virtual links that connect VMs and
Interfaces";
}
list interfaces{
key interface;
leaf interface{
type string;
description "Name of physical interface";
}
list ports{
key port;
leaf port{
type string;
description "Name of the connector";
}
leaf link{
type leafref{
path "../../../links/link";
}
description "Link that is connected to
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the port via connector";
}
description "Set of the connectors the
physical interface has";
}
description "Set of physical interfaces";
}
list switches{
key switch;
leaf switch{
type string;
description "Name of the forwarding domain";
}
list ports{
key port;
leaf port{
type string;
description "Name of the connector";
}
leaf name{
type string;
description "Name of the subconnector";
}
leaf link{
type leafref{
path "../../../links/link";
}
description "Link that is connected to the
switch via port";
}
description "Set of the connectors the
forwarding domain has";
}
description "Set of the forwarding domains";
}
list vms{
key vm;
leaf vm{
type string;
description "Name of the Virtual Machine";
}
list ports{
key port;
leaf port{
type string;
description "Name of the connector";
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}
leaf name{
type string;
description "Name of the subconnector";
}
leaf link{
type leafref{
path "../../../links/link";
}
description "Link that connects the
VM with a switch or Interface
via connector";
}
description "Set of Virtual Machine connectors";
}
leaf ram{
type string;
description "Amount of memory to allocate for
the Guest OS";
}
leaf cpu{
type string;
description "Amount of cpus to allocate for the
Guest OS";
}
list storages{
key id;
leaf id{
type string;
description "Name of the Storage";
}
leaf location{
type string;
description "External location where
the image is saved.";
}
description "Virtual storge of the image
for the Virtual Machine";
}
description "Set of the Virtual Machines configured
on the universal Customer-Premises Equipment";
}
description "This is an RFS skeleton service";
}
}
}
<CODE ENDS>
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5. Security Considerations
At this time, no security considerations are addressed by this memo.
6. IANA Considerations
No request to IANA at this time.
7. Acknowledgements
At this time, no acknowledgements are addressed by this memo.
8. 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>.
Authors' Addresses
Dmytro Shytyi
Ecole Polytechnique/Telecom ParisTech
Paris area , Ile-de-France
France
Email: ietf.dmytro@shytyi.net
URI: http://dmytro.shytyi.net https://shytyi.net
Laurent Beylier
SFR/ALTICE
Paris area , Ile-de-France
France
LUIGI IANNONE
Telecom ParisTech
Paris , Ile-de-France
France
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