Operation Architecturef Virtualizedforili d Infrastructure
fEiji Kawai
Service Platform Architecture
RResearchh Center,CNICT

Outlines• A brief introduction– Our pposition and viewpoint
pin NWGN R&Dactivities• Deployment issues of NWGN technologies– In‐progress
In progress consideration

Towards new generation network

Our position in NWGN R&D activities• StrongStemphasis
h i on real‐worldlld ddeploymentlt– Wide‐area testbed network infrastructure– Encourage
g to introduce cutting‐edge
g g NWGN technologies
g intoJGN2plus• Great opportunities for lab‐level technologies to obtain proof of theirconcepts• Also our opportunities for facing operational issues of NWGN
deployment– Neither limited to academic projects, nor limited to domestic
projects• Support for experiments in commissioned research• Coordination of international collaboration• Service‐level viewpoint– Service Platform Architecture Research Center

JGN2plus as a Service Platform

Deployment issues of NWGNtechnologies• Resource provisioning• Multi‐domain operationp• Advanced operation modelIssue #1: Resource provisioning• Low
L llevell resource managementt mechanisms
h iarewell‐studied and various tools have been released– Network path management (bandwidth, distance, …)– Virtual host management (CPU, memory, HDD, …)• Granularity
Gl it isi a keyk
– We can guarantee a coarse‐grained resource
requirement• Still it can be very hard and requires some political effort…

– Fine‐grained resource provisioning is a challenging
issue• Ex. How can we provision resource for information service
with overray communications?

Simulation/Emulation• Is simulation/emulation a realistic solution?
– Temporalpdynamicsyshould be considered in fine‐grained resource provisioning– High cost to simulate/emulate accurate temporal
dynamics of a live internet‐wide system– Can virtualization help?

Issue #2: Multi‐domain
Multi domain operations• ManyM
NWGN technologies
t h l i partiallyti ll havehsucceeded
d d ini
working well inter‐domain– PerfSONAR, DCN (Dynamic Circuit Network), PlanetLab,etc.
• Overlay approaches• TheirTh i operations
ti
sometimesticostt highhi h andd scalel poorlyl– How to set information access policies inter‐domain?
– How to allocate resource fairly inter‐domain?
inter domain?
– How to tackle operational troubles inter‐domain?

• Possible
ibl solution:l i
An architecture for inter‐domain operations

Architecture• AArchitecture:
hit ta specification
ifi ti off an interface
i t f
and the logical behavior of resources
manipulated via the interface (J. E. Smith andR. Nair, “Virtual“Machines”,” 2005))– We need well‐defined interfaces to decouple
functions in a complicatedpsystemy• Virtualization never succeeds without well‐defined interfaces– Virtualization is a technique to mimic the usersvia the well‐defined interfaces– Links,Links Routers,Routers Nodes
Nodes, File Systems
Systems, DBDB, P2P,
P2P HTTP,HTTP
Mail, etc.

Wh t should
Whath ld we ttackle
kl next?
t?

Operation virtualization• Inter‐domain
di operations
irequire
i virtualization
ili i– We often know desirable logical behavior of resources• Private path establishment• Communication quality• Customized forwarding/routing• Data management• Load balancingg– We rarely know the interfaces to manipulate theresources beyondbd domainsd• Well‐defined interfaces!!Issue #3: Advanced operation model• Virtualization can increase operational costs– Host virtualization• Pros– Easy OS installation– Simple system backup and recovery– Consolidated management• Cons– Increased failure points such as virtual switch– HardH d troublet bl shooting
h ti ini virtualized
i t li d resource– How about network virtualization?

Two approaches
in operation virtualization• Horizontal operation virtualization– Issue #2– Organization‐based• Basically,
Basically the same architecture as the Internet• Vertical operation virtualization– We need to virtualize the network resourceoperations– Network‐resource‐entity‐based

Horizontal operationand vertical operation

VirtualDomain
VirtualResources
and VirtualOperation
ModelsPhysicalPhi lDomain

Physical Resources
and Operation
ModelsSummary• ThreeThi
issuesi deploying
ind l i NWGN technologies
t h l i– Resource provisioning– Multi‐domain
Multi domain operation– Advanced operation model• Collaborations are welcome!
– We have jjust started trials and discussions…
– We would like to share the R&D&O experience ofvirtualized networking and computing infrastructure

Thank you!