Virtualizing Home Services Use Cases
draft-lee-vhs-usecases-01
The information below is for an old version of the document.
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Expired".
|
|
|---|---|---|---|
| Authors | Yiu Lee , Chongfeng Xie | ||
| Last updated | 2014-09-02 | ||
| RFC stream | (None) | ||
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| Consensus boilerplate | Unknown | ||
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| IESG | IESG state | I-D Exists | |
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draft-lee-vhs-usecases-01
TBD Y. Lee
Internet-Draft Comcast
Intended status: Informational C. Xie
Expires: March 6, 2015 China Telecom
September 2, 2014
Virtualizing Home Services Use Cases
draft-lee-vhs-usecases-01
Abstract
This draft states some high-level use cases of virtualizing home
services.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on March 6, 2015.
Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
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Table of Contents
1. Virtual CPE Motivations . . . . . . . . . . . . . . . . . . . 2
2. High-level Architecture . . . . . . . . . . . . . . . . . . . 2
3. Virtual CPE Use Case . . . . . . . . . . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . 4
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 4
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
8.1. Normative References . . . . . . . . . . . . . . . . . . 4
8.2. Informative References . . . . . . . . . . . . . . . . . 5
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5
1. Virtual CPE Motivations
Traditionally Network Service Providers (NSP) implement services in
the Customer Premises Equipment (CPE). These services include NAT
[RFC2663], Voice over IP (VoIP) adapter, IP management, personal
firewall service, etc. This model requires NSP updating the CPE
firmware or upgrading the CPE hardware to support a new service.
Often this update or upgrade process takes a significant effort.
When a NSP virtualizes the CPE, services will be moved to the network
and decoupled from the CPE. The idea is to speedup service offering
to users.
Traditionally NSP serve an entire house behind a CPE as a functional
unit. Services are built around CPE but not around users or groups
behind a CPE. When virtualizing the CPE, NSP would like to offer
more personalized services for individual users behind CPE.
Problem Statement discusses the background and motivations of
virtualizing home services. The objective of this architecture is
virtualizing home services and providing them in the network. This
draft will discuss some possible use cases that are required
supporting virtualizing home services.
2. High-level Architecture
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------------------
/ ISP Provisioning /
/ System /
-------------------
||
|| Ia
|| +------------------------+
-------| +---+ +---+ +---+ |
| |vs1| |vs2| .... |vsN| |
---- | +---+ +---+ +---+ |
/CPE/==========\ | Virtual CPE Controller |
---- \ +---------------||-------+
\+-------------+ || Ib ///////////////
---- | Virtual CPE |=====|| / /
/CPE/ =============| Packet |====================/ Internet /
---- Ic | Forwarder | / /
/+-------------+ \\\\\\\\\\\\\\\
---- /
/CPE/=========/ vs - Virtual Service
---- Ia - Service Provisioning API
Ib - Service Activation API
Ic - Data Path Specification
Virtualizing Home Services High-Level Architecture Diagram
Figure 1
Figure 1 illustrates the high-level architecture. Problem Statement
describes the various functions defined in the diagram.
3. Virtual CPE Use Case
When virtualizing the home services and moving them to the network,
there are uses cases the new architecture must address:
1. Local QoS Policy: In traditional CPE model, users manage local
Quality of Service (QoS) for their devices. For example: a user
can give higher priority to VoIP than other services. In Virtual
CPE, this service will be virtualized in the network. The
network must provide an interface for users to configure local
QoS policy.
2. Personal Firewall Policy: In traditional CPE model, users mange
their local firewall rules in the CPE. In Virtual CPE, this
service will be virtualized in the network. The NSP must provide
an interface for users to configure local firewall policy..
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3. NAT Service: Almost all CPE provide NAT service. When NAT
service is virtualized in the NSP network, NSP must be able to
provision and manage NAT service for users.
4. IPv6 Transition Technology: Almost all IPv6 transition
technologies (e.g., DS-Lite, MAP-E, MAP-T, lw4over6) require some
functions defined in the CPE. Updating the CPE in large scale to
support the transition technologies is always a challenge that
leads to slower IPv6 deployment. Virtualizing IPv6 transition
technology can ease the requirement to the CPE.
5. Personal M2M Service: In traditional CPE model, CPE often is the
gateway of the M2M applications. In Virtual CPE, M2M application
gateway will be virtualized in the network. The NSP must provide
an interface to provision M2M devices and manage the M2M
applications to provide services to the users.
6. Local Storage: In traditional CPE model, users can attach a local
storage for personal contents. In Virtual CPE, NSP can offer
"virtual storage" to users over the network. The virtual storage
must appear local to the user's devices.
7. VPN Service: Some CPEs offer VPN (e.g., IPSec) service for home
office users to connect to their office internal networks. NSP
must be able to provision and manage VPN service for users.
8. Event Notification: When virtualizing CPE, CPE and NSP network
are tightly coupled. CPE must be able to generate events to
notify NSP when event occurs. NSP may leverage exciting
protocols such as [TR-69] for event notification.
4. Security Considerations
5. Conclusion
6. Acknowledgements
7. IANA Considerations
This memo includes no request to IANA.
8. References
8.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
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8.2. Informative References
[RFC2663] Srisuresh, P. and M. Holdrege, "IP Network Address
Translator (NAT) Terminology and Considerations", RFC
2663, August 1999.
Authors' Addresses
Yiu L. Lee
Comcast
One Comcast Center
Philadelphia, PA 19103
U.S.A.
Email: yiu_lee@cable.comcast.com
URI: http://www.comcast.com
Chongfeng Xie
China Telecom
Room 708 No.118, Xizhimenneidajie
Beijing 100035
P.R.China
Email: xiechf@ctbri.com.cn
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