Network Stratum Query (NSQuery) Charter
Goals
Data Centers offer application services to end-users such as video gaming, cloud computing and others. As the application servers are distributed geographically in many
Data Centers for various reasons, the decision as where to instantiate services needs to be optimized across end-user experience and data center economy.
User experience is impacted by Intra Data Center factors such as server load conditions, and connectivity within Data Center as well as the underlying network behavior (such as congestion, jitter, latency and loss) between end-user and the hosting Data Center and between Data Centers.
The Working Group will design and specify a communication protocol and associated mechanisms that will allow the application to do a whole network query of information at the network-stratum so that synchronized monitoring would be enabled across application and network.
The network stratum is described as non-application resources (as shown in diagram 1) that includes transport to physical layer. The scope is across many boxes in multiple domains (physical, link, network, and transport domains). Application stratum includes multiple applications at the application layer across multiple domains.
Application protocols will use this network protocol mechanism to manage the network.
Why needed:
Currently Network Management only queries network elements at a particular layer.
This charter suggests work that will allow a coordinated query of network stratum resources. The application will talk to a set of N-CSG to Query information.
Avoid NIH (not invented here) : The purpose of this working group is to create the full-network query function leverage appropriate existing technology.
Every effort will be made to utilize existing NM protocols or emerging NM protocols (for focus Part A or Part B). Due to this concern, four documents will be created early in the process (problem statement, architecture document, survey of existing protocols, and requirements document) in order to verify with the Network Management and OPS IETF community that no mechanisms exist.
Application Stratum Needs
Emerging real-time application services (e.g., video gaming, conferencing, on-demand video/HDTV applications, cloud computing, etc.) may make significant demands on network resources such as bandwidth and may have a variety of quality of service requirements such as latency. As more applications begin to be fielded in “cloud computing” environments, the real-time applications are being deployed on network

resources across multiple domains on multiple types of network hardware. This trend to place more applications in “cloud” environments is project to grow.
Due to the lack of cross stratum interaction between the application stratum and the underlying network stratum during service provisioning, many application services make poor use of network resources and capability or not achieve their overall quality of service objectives and/or being denied of service provisioning pre-maturely.
Synchronized full-network network by application monitoring is critical to make the application placement work effectively.
Objectives
The Working Group will focus on the following iems:
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A “problem statement” document that provides the description of the issues in full-network query and key terminology.
An “architecture” document that provides the description of architecture components and their functions. This document also provides how Network
Stratum Query (NSQuery) supports applications requests.
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A “survey” document that lists all existing works in related to this working group.
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An “application” of NSQuery for a specific application area data center load balancing and distribution, data center HDTV multi-cast, and streaming video.
- A “requirement” document that specifies requirements for the NSQuery functionalities between Application Stratum and Network Stratum, identifying types of messages and information CSO interface may need to pass for the
NSQuery function.
- A NSQuery “protocol” document that defines request/reply format and semantics to allow identified functionalities on the CSO based on the “requirement” document.
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A “protocol” document that defines interfaces between network layer controller and internet NM and policy control (PEP/PC)
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A “protocol” document that defines interfaces between network layer controller and path computation element (PCE) for multi-domain path computation
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An “implementation” experience document that describes CSO implementation experience or network trial.

Proposed Schedule for IETF Working Group
Problem statement
Architecture statement
[March 2011]
[March 2011]
Survey Document
Application Documents
Requirements Document
AS-NS Protocol
[March 2011]
[July 2011]
[July 2011]
[July 2011]
NS-NM & PCP/PEP Protocol
NS-PCE
Implementation Report
Interested Parties:
[July 2011]
[July 2011]
[November 2011]
Vendors:
- Huawei, Ericsson, Cisco, ETRI, Iridescent
Carriers:
- Telefonica, Verizon, NTT, KDDI, BT, DT, China Mobile

People (Attendees for Bar BOF) – 40 signed attendees
Young Lee
Dave McDysan
Katsushi Kobayashi
Xiangsong Cui
Dirk Hugo
Greg Bernstein
Matthias Kaschub
Aki Myrhinen
Heeyoung Jung
Dan Li
Xie Lei
Hideki Sunahara
Daniele Ceccarelli
Dave Croker
Myung Ki Shin
Dapeng Lin
Tae Yeon Kim
Oscar Gonzales de
Dios
Fatai Zhang
Mirja Kuhlewind
Quintin Zhao
Duan Shihui
Attila Takacs
Sandoche
Balakrichenan
Tomonori Takeda
Malcolm Betts
Jonathan Saddler
Yuji Tochio
Tian Linyi
Alvaro retana
Iguas Bagdonas
Guoying Zhang
Xu Yunbin
Antti Makela
Riccardo Bernadini
Kathy McEwen
Bob Briscoe yajuan Wu
Yosifumi Atarashi
Ray Atarashi ylee@huawei.com dave.mcdysan@varizon.com ikib@AI.AIST.GO.JP
Xiangsong.cui@huawei.com dirk.vou-hugo@telecom.de gregb@grotto-networking.com kaschub@ikr.uni-stuttgart.de anyrhine!@cs.helsinki.fi hyjung@etri.re.kr danli@huawei.com xielei57471@huawei.com suna@wide.ad.jp daniele.ceccarelli@ericsson.com dhc@dcrocker.net mkshin@etri.re.kr lindapeng@chinamobile.com tykim@etri.re.kr ogondio@tid.cs zhangfatai@huawei.com mirja.kuehlewind@ikr.uni-shuttgart.de qzhao@huawei.com duanshihui@mail.ritt.com.cn attila.takacs@ericsson.com sandoche.balakrichenan@afnic.fr takeda.tomonori@lab.ntt.co.jp malcolm.betts@zte.com.cn saddler@homesys.org tochio@jp.fujitsu.com tianlinyi@huawei.com aretana@cisco.com bagdona@cisco.com zhangguoying@mail.ritt.com.cn xuyunbin@catr.ca antti.makela@tlek.fi riccardo.bernardini@unind.it k.mccwen@verizon.net bob.briscoe@bt.com wujajuan@huawei.com
Huawei
Verizon
AIST
Huawei
DT
Grotto
Univ. Stuttgart
ETRI
Huawei
Huawei
Ericsson
ETRI
China Mobil
ETRI
Telefonica
Huawei
Univ. Stuttgart
Huawei
Ericsson
NTT
ZTE
Tellabs
Fujitsu
Huawei
Cisco
Cisco
Iridescent
BT
Huawei
Alaxala
IIJ

Schedule for creation of material for IETF BOF’s consideration:
Preliminary Problem statement
Preliminary Architecture statement
Preliminary Survey Document
Preliminary Application Documents
Preliminary Requirements Document
Preliminary AS-NS Protocol
Preliminary NS-NM & PCP/PEP Protocol
Preliminary NS-PCE
Preliminary Implementation Report
[September 2010 ]
[September 2010 ]
[September 2010 ]
[October 2010]
[October 2010]
[October 2010]
[October 2010]
[October 2010]
[November 2011]
Initial BOF work schedule
Interim Meetings – 3 Meetings (September– October]
Potential collaboration: NG Virtual networks, Internet 2, ITRI.