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Versions: 00 01                                                         
TEAS                                                              Y. Lee
Internet-Draft                                       Samsung Electronics
Intended status: Informational                                    X. Liu
Expires: May 6, 2021                                      Volta Networks
                                                           LM. Contreras
                                                              Telefonica
                                                        November 2, 2020


                       DC aware TE topology model
                 draft-llc-teas-dc-aware-topo-model-00

Abstract

   This document proposes the extension of the TE topology model for
   including information related to data center resource capabilities.

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 May 6, 2021.

Copyright Notice

   Copyright (c) 2020 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
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.



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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Datacenter information  . . . . . . . . . . . . . . . . . . .   2
   3.  Model structure . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   More and more service providers are deploying cloud computing
   facilities in order to host different kinds of services and
   applications.  Such facilities can be generally referred as
   Datacenter Points of Presence (DC-PoPs).  Those DCs will consist on a
   number of servers and networking elements for connecting all of them
   with the transport network.  Depending on the number of servers in
   the data center, there will be distinct capabilities in terms of
   CPUs, memory and storage available for deploying and running the
   aforementioned services.

   In such distributed and interconnected DC-PoPs, both computing and
   topological information are of interest for determining the optimal
   DC where to deploy a given service or application.

   This document propose a DC-aware extension for the topology model.

2.  Datacenter information

   The relevant information for datacenter capabilities can be described
   in different ways.  One potential manner is to describe resource
   capabilities such as CPU, memory, storage, etc.  This can be done in
   terms of total, used and free capacity for each of the parameters of
   interest.  Another form of populating the information is by
   describing those resource capabilities as a bundled, usually referred
   as quota or flavor.  In this respect, reference bundles such as the
   ones proposed by the Common Network Function Virtualisation
   Infrastructure Telecom Taskforce (CNTT) [CNTT].

   Additional information can refer to the management capabilities of
   the compute infrastructure, such as hypervisor details or
   virtualization technologies available.

   Finally, all can be complemented with information related to the
   networking details for reaching the aforementioned compute
   capabilities (IP addressed, bandwidth, etc).



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3.  Model structure

   module: ietf-dcpop-dc
       +--rw dcpop
          +--rw dc* [id]
          |  +--rw hypervisor* [id]
          |  |  +--rw ram
          |  |  |  +--rw total?   uint32
          |  |  |  +--rw used?    uint32
          |  |  |  +--rw free?    uint32
          |  |  +--rw disk
          |  |  |  +--rw total?   uint32
          |  |  |  +--rw used?    uint32
          |  |  |  +--rw free?    uint32
          |  |  +--rw vcpu
          |  |  |  +--rw total?   uint16
          |  |  |  +--rw used?    uint16
          |  |  |  +--rw free?    uint16
          |  |  +--rw instance*   -> /dcpop/dc/instance/id
          |  |  +--rw id          string
          |  |  +--rw name?       string
          |  +--rw instance* [id]
          |  |  +--rw flavor
          |  |  |  +--rw disk?    uint32
          |  |  |  +--rw ram?     uint32
          |  |  |  +--rw vcpus?   uint16
          |  |  |  +--rw id?      string
          |  |  |  +--rw name?    string
          |  |  +--rw image
          |  |  |  +--rw checksum    string
          |  |  |  +--rw size        uint32
          |  |  |  +--rw format
          |  |  |  |  +--rw container?   enumeration
          |  |  |  |  +--rw disk?        enumeration
          |  |  |  +--rw id?         string
          |  |  |  +--rw name?       string
          |  |  +--rw hypervisor?   -> /dcpop/dc/hypervisor/id
          |  |  +--rw port*         -> /dcpop/dc/network/subnetwork/port/id
          |  |  +--rw project?      string
          |  |  +--rw status?       enumeration
          |  |  +--rw id            string
          |  |  +--rw name?         string
          |  +--rw image* [id]
          |  |  +--rw checksum    string
          |  |  +--rw size        uint32
          |  |  +--rw format
          |  |  |  +--rw container?   enumeration
          |  |  |  +--rw disk?        enumeration



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          |  |  +--rw id          string
          |  |  +--rw name?       string
          |  +--rw flavor* [id]
          |  |  +--rw disk?    uint32
          |  |  +--rw ram?     uint32
          |  |  +--rw vcpus?   uint16
          |  |  +--rw id       string
          |  |  +--rw name?    string
          |  +--rw dc-monitoring-param* [name]
          |  |  +--rw name            string
          |  |  +--rw value-string?   string
          |  +--rw network* [id]
          |  |  +--rw subnetwork* [id]
          |  |  |  +--rw port* [id]
          |  |  |  |  +--rw ip-address?   inet:ip-address
          |  |  |  |  +--rw instance?     -> /dcpop/dc/instance/id
          |  |  |  |  +--rw project?      string
          |  |  |  |  +--rw status?       enumeration
          |  |  |  |  +--rw id            string
          |  |  |  |  +--rw name?         string
          |  |  |  +--rw project?   string
          |  |  |  +--rw status?    enumeration
          |  |  |  +--rw id         string
          |  |  |  +--rw name?      string
          |  |  +--rw dhcp-agent* [id]
          |  |  |  +--rw enabled?   boolean
          |  |  |  +--rw pools* [ip-address]
          |  |  |  |  +--rw ip-address    inet:ip-address
          |  |  |  +--rw project?   string
          |  |  |  +--rw status?    enumeration
          |  |  |  +--rw id         string
          |  |  |  +--rw name?      string
          |  |  +--rw project?      string
          |  |  +--rw status?       enumeration
          |  |  +--rw id            string
          |  |  +--rw name?         string
          |  |  +--rw dcpop-ref?      -> /dcpop/dcpop-id
          |  +--rw ap*                    -> /actn-vn:actn/ap
   /access-point-list/access-point-id
          |  +--rw dcpop-ref?               -> /dcpop/dcpop-id
          |  +--rw id                     string
          |  +--rw name?                  string
          +--rw dcpop-id?   string








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4.  Security Considerations

   The data-model in this document does not have any security
   implications.  The model is designed to be accessed via NETCONF
   [RFC6241], thus the security considerations for the NETCONF protocol
   are applicable here.

5.  IANA Considerations

   This draft does not include any IANA considerations

6.  References

   [CNTT]     "Common NFVI for Telco Reference Model, Release 4.0",
              September 2020,
              <https://cntt-n.github.io/CNTT/doc/ref_model/>.

   [RFC6241]  Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed.,
              and A. Bierman, Ed., "Network Configuration Protocol
              (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
              <https://www.rfc-editor.org/info/rfc6241>.

Acknowledgments

   The work of L.M.  Contreras has been partly funded by the European
   Commission through the H2020 project 5GROWTH (Grant Agreement no.
   856709).

Authors' Addresses

   Young Lee
   Samsung Electronics
   Seoul
   South Korea

   Email: younglee.tx@gmail.com


   Xufeng Liu
   Volta Networks

   Email: xufeng.liu.ietf@gmail.com









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   Luis M. Contreras
   Telefonica
   Ronda de la Comunicacion, s/n
   Sur-3 building, 3rd floor
   Madrid  28050
   Spain

   Email: luismiguel.contrerasmurillo@telefonica.com
   URI:   http://lmcontreras.com/










































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