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Virginia Commonwealth University
Dr. Milos Manic
Network Slicing for Emergency
Communications
CITYCITYOFOF
EAGER: US Ignite: Network Slicing for Emergency Communications, NSF Award ID: 1258486
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I. Part I – US Ignite
• Technologies, goals, partners, events, apps
II. Part II – NSEC
1. Introduction• Software Defined Networks, OpenFlow, Open Networking Foundation
2. Why NSEC• Existing EAS (complexity, cost)
3. NSEC• General architecture• Implementation
4. Demo videos
Overview
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Part I: US Ignite
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Developing Gigabit-ready digital experiences and
applications.
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Public-private
partnership
501(c)(3)
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NextGen Technologies
Next-Gen
Infra-
structure
Next-Gen
Apps
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60 next-generation applications
200 community test beds
Coordinate best practices
OUR GOALS
Infrastructure
Next-Gen
Applications
Economic
Leadership
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US Ignite fosters the creation of next-generation Internet
applications that provide transformative public benefit
STRATEGIES:
A. Assemble and maintain a community of public-private
partners that support US Ignite
B. Suggest opportunities for sustainable new business(es)
built on the networking revolution.
C.Stimulate the development of compelling next-
generation applications that deliver on national priorities
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Current
Partners
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Chattanooga Gig City
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Selected Events
White House Launch
Developer Workshop
Gig Tank 2012
KC Hackathon
Hackanooga
Cajun Codefest
Fiber to the Home Council
FCC Gigabit Challenge
Application Summit
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Typical App Characteristics
• Real-time (apparently instantaneous)
• Very low latency
• Reliable (no hiccups)
• Cyberphysical interactions
• Big data
• Collaborative (in the moment)
• Distributed
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Industry
• Gets
– Compelling applications for their technology
innovations (SDN, Net virtualization, etc.)
– Introductions to new markets
• Gives
– Funding for the non-profit
– Engineering, lab, and equipment resources
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Carriers and ISPs
• Gets
– Compelling new applications for their service
innovations
– Opportunities for new revenue streams
• Gives
– Funding for the non-profit
– Engineering, lab, and last-mile resources
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R & E Networks
• Gets
– Compelling new applications for their service
innovations (layer 2, SDN, etc.)
– Recognition for their leadership
• Gives
– Access to pre-commercial services
– Expertise in advanced networking
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More info:• US Ignite: http://us-ignite.org/
• US Ignite intiative: http://www.whitehouse.gov/blog/2011/09/12/us-ignite-new-
foundation-america-s-broadband-future
• Mozilla Ignite Challenge: https://mozillaignite.org/
• US Ignite Application Summit 2013: https://www.youtube.com/watch?v=E1XAaToT5lY
• Chatanooga City Story: https://www.youtube.com/watch?v=CcE_k6DjE3A
• GENI Technology in accident scenario:
https://www.youtube.com/watch?v=gRg3RhUGewM
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Part II: NSEC
Introduction
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Today’s talk
• Will not provide all the answers…,
but will point out to big challenges…and
how the problems can be solved…
• Not WHAT but WHY…
EAS or SDN or OF…
we need a paradigm shift…
SDN can be a path forward…
Url from http://studium.unict.it/dokeos/2012/courses/1001628C1/document/sdnLesson.pdfMODERN HEURISTICS RESEARCH GROUP| Virginia Commonwealth University, Richmond, VA 23/75
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Software Defined Networks (SDN)
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What is SDN?
• What SDN is not:
– SDN is not a new architecture
– SDN is not a new network protocol
– SDN is not a new hardware specification
• What SDN is:
SDN IS an entirely new way of thinking (managing)
about networks.
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Network Structure
Network
• Edge
– Applications and hosts
• Core
– Interconnected routers
– Network of networks
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What makes SDN revolutionary?
• Bottleneck!– Evolution of computer networking has
created a bottleneck effect!
• Where?– Protocol innovation is fast at the edge,
but slow in the middle
• Why?– Internet layer protocols are tied directly
to hardware.
– Innovation requires large scale replacement of hardware.
– R&D of new protocols are prohibitively costly to test and implement.
Application
Layer
Firefox Silver-
light
Thunder-
bird
MPlayer
HTTP SMTP RTP
TCP UDP
PPP Ethernet
Optical
Fiber
Twisted
Pair
Coaxial
Cable
IPV4,6
Transport
Layer
Network
Layer
Data Link
Layer
Physical
Layer
Photo courtesy: http://www.escotal.com/osilayer.html
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• Solution: “Virtualize the network.”
– Separate the control from the hardware.
– Allow control to be handled where innovation happens
fastest: the network edge
What makes SDN revolutionary?
Data Path
Control Management
Hardware
Data Path
Hardware
SDN Protocol
Control Management
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What makes SDN revolutionary?
• The control plane moves from hardware to software
• Innovation shifts from a hardware design problem to a software design problem
• SDN separates the control plane from the data plane
CONTROL
PLANE
DATA
PLANE
HA
RD
WA
RE
SO
FT
WA
RE
=> Control can be handled from the network edge!
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Must be answering some important questions!
• Large-scale SW systems?
– How to build?
– Abstractions -> build modular systems• Now concerns separated
– How to come up with abstractions?• Decompose the problem, focus on interface related to subproblem,
• If that does not work, go back, decompose further
•Abstractions in networking today?
– Data plane - done well (layers, forwarding state + packet header)
– Control plane – the only mechanism without abstraction!• Must compute forwarding state (based on low-level hw/sw, entire network topology, for all routers/switches).
• We see it as a natural set of requirements – WRONG!
– Programming analogy!
What makes SDN revolutionary?
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Network OS
Control Program
Global Network View
Software Defined Networks
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Network OS
Virtualization Layer
Control Program
Abstract Network View
Global Network View
Clear Separation of Concerns
Software Defined Networks
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OpenFlow Standard
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OpenFlow
• If the control plane is separate from hardware, we need to define how communication between the two is handled.
• Solution: OpenFlow– Open standard
– Allows easy deployment ofinnovative routing and switching protocols
– data path presented as a clean flow table abstraction
– Traffic “flows” are defined using simple rules
Data Path
Hardware
OpenFlow
Control Management
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Url from: http://www.openflow.org/videos/
openflow.org/videos/
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Reaching to customers in controlled, low delay fashion– Distributed control
• Significantly reduced delay
– Separation of services • ex. CAES and three IT
– Video streaming • Guaranteed bandwidth/QoS, directed traffic, own slice
– Seamless Wi-Fi sharing• No login, separated traffic
– Smart-Grid• Client-Utility communication
– Vehicle fleet• Wirelessly communicating via routers on the road
– Emergency Alert Systems
Applications
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• Continues standardization of OpenFlow and SDN interfaces/AP
• Current ONF Members
• Board Members
Open Networking Foundation (ONF)www.opennetworking.org
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Url from: http://cenic2012.cenic.org/program/slides/CenicOpenFlow-3-9-12-submit.pdf
Industry Embracing SDN
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Google’s OpenFlow WAN
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• Before 2012…Scott Shenker, Nick McKeown, Teemu Koponen
2004 Stanford/Berkeley projects
2008 SDN such as NOX and open flow switch defined
2011 ONF started, big board members
2012 SDN trade show (Latest Open Networking Summit)
2012 Google's WANWorld’s largest production network, now using SDN connected data centers
Why such rapid acceptance?
=>Answers important questions!
Url from: http://opennetsummit.org/archives/apr12/hoelzle-tue-openflow.pdf
Google in 2012, but before that…
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Real World Use: Google’s OpenFlow WAN
(Apr. 2012)
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Google’s OpenFlow WAN
“If Google were an ISP, as of this month it would rank as
the second largest carrier on the planet.”-ATLAS 2010 Traffic Report, Arbor Networks
• Google operates two large backbone networks– Internet-facing backbone (user traffic)
– Datacenter backbone (internal traffic)
• Decided in 2009 to investigate using SDN as replacement for Datacenter backbone (largest production network at Google).
• As of early 2012, all of Google’s Datacenter traffic is carried by an OpenFlow SDN.
• Network now operates from 25 to 50 times faster
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US Ignite 2014 event – Glenn Ricart…
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US Ignite 2014 event – Glenn Ricart…
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US Ignite 2014 event – Glenn Ricart…
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Another applicationUS – Korea Workshop on Smart Cities
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• SDN/NFV for Smart Cities, Chicago, Aug. 16-17, 2014
– The avantages of SDNs in Smart Cities, Management, Control,
Security, Resilience Session, Milos Manic, Virginia Commonwealth
University
NSF is looking for (SDN/NFV) applications, starting looking
into international collaboration
=>Answers important questions!
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Network Slicing for Emergency
Communications: General Architecture
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Why NSEC?
• People are going away from:
– Local TV channels
– Landlines
• People are going towards the Internet:
– So…can we use broadband for EAS?
First…let us look at the existing EAS….
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CallerEdge
PSTN
ANI ALI
ROUTER
PublicSafety
AnsweringPoint
CADS
CallerLocation
Information
911
ResponderEdge
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CallerEdge
PSTN
ANI ALI
ROUTER
PublicSafety
AnsweringPoint
CADS
CallerLocation
Information
911+VoIP
PublicInternet
VoIP
ResponderEdge
DB
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CallerEdge
PSTN
ANI ALI
ROUTER
PublicSafety
AnsweringPoint
CADS
CallerLocation
Information
E911+VoIP+Cell
PublicInternet
VoIP
ResponderEdge
PacketNetwork
Cell Network
LOC
DB
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CallerEdge
PSTN
ANI ALI
ROUTER
PublicSafety
AnsweringPoint
CADS
E911+VoIP+Cell+Reverse 911
PublicInternet
VoIP
ResponderEdge
PacketNetwork
Cell Network
LOC
DB
DB
CallerLocation
Information
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CallerEdge
PSTN
ANI ALI
ROUTER
PublicSafety
AnsweringPoint
CADS
E911+VoIP+Cell+Reverse 911+SMS
PublicInternet
VoIP
ResponderEdge
PacketNetwork
Cell Network
LOC
DB
DB
DB
CallerLocation
Information
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CallerEdge
PSTN
ANI ALI
ROUTER
PublicSafety
AnsweringPoint
CADS
E911+VoIP+Cell+Reverse 911+SMS+Next?
PublicInternet
VoIP
ResponderEdge
PacketNetwork
Cell Network
LOC
DB
DB
DB
CallerLocation
Information
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Emergency Responder’s Statement
• Stacy Hyde, Fire Chief, City of Ammon
– In 2012: 134 calls, ~ $130K, or $945 per call
– On average, fire doubles in size per minute
– Long communication chain
• Arriving at a scene w/o information, key to operations!
• Cost of loss of property
– Average response time increase of 3-5 min may mean the difference between recoverable
fire and total loss of property!
– Direct communication chain
• Streamline the system
• Get on scene faster,
• greater abilities on scene,
• decreased response time,
• decreased cost per call.
What we have!
We need!
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Existing EAS…
• Current systems too complex/expensive!• Current City of Ammon cost per call ~ $1,000
• Problems solved by adding more hardware – complexity further increases
• Dispatcher centers deal with complex equipment – raises the cost further to keep
up & running
• Calls treated as analogue (voice), currently via public internet
• Questions & Challenges• Who makes the choice where the call goes, who answers the call?
• Changing the paradigm (how people think) – entrenched way of doing things!
• Phone companies dictate how communication goes
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How about SDN based approach…?
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SDN based EMS?
• SDN based approach• Common dispatch server
• Easier to manage
• More resilient
• No consideration for the carrier anymore • Once they support SDN and let us across the network
• Move intelligence to the edge • Control the core
• The core does not make decisions
• Go digital• Convert edge devices communication into digital
• Cell, landline, computer treated equally -> connection handed over directly
• OnStar example: • Call does not have to go through dispatch
• Call can go to a EMS responder directly
• EMS responder can be dynamically determined (mobile – fire truck, closest – fire station or fire
truck)
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Overall Architecture
Network
User M Device
User 2 Device
User 1 Device
Manager Server
Service 1 Server
Service 2 Server
Service N Server
Client/Server1. Manager Server provides basic management of User Devices2. Service Servers provide applications/content to User Devices
1. Each Service is on its own private virtual network3. User Devices would be installed in a home or business
1. Have 1 physical network connection, multiple virtual network connections4. Network is managed by Network Operators, e.g. ISPs
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Network
ManagerManager
Service 1 Manager
Service 2 Manager
Service N Manager
Manager Server
Service 1 Server
Service 2 Server
Service N Server
Service-Server Management
Overall Architecture - Managers
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Network
Manager Server
Service 1 Server
Service 2 Server
Service N Server
OpenFlowController 1
OpenFlowController 2
User 1 Device
User 2 Device
User M Device
OpenFlow Network Management OpenFlow Controllers – EA agencies need contracts with OFC to provide priority when needed;
Overall Architecture
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Overall Architecture - Services
Service 1 Manager
Service 1 Server
User 1 Device
Service 2Manager
Service 2Server
User 2Device
Service NManager
Service NServer
User NDevice
VLAN 101Networ
k
Networ
k
Networ
k
Networ
k
Networ
k
Networ
kVLAN 10N
VLAN 102
ManagerServer
Isolation of Services!
Select Service
Manager Server Client
ManagerManager
Networ
k
VLAN 100
The Manager Server says “all user devices switch to weather service.It talks to the client machine in total (not to the individual VMs within client; It is the hypervisor within each client machine pauses all the VMs except the one requested (Weather Alert); Service server has tftp within it; Client has within PXE tftp as well; both communicate via tftp, so service server sends a binary image to a client VM. This is what is called PXE boot; So now we have VM running with a particular service, i.e. browser or linphone;
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Overall Architecture - Server-Client Communication
DHCP Server
Manager Server
LTSP Server
LTSP Server
LTSP Server
HARDWARE
User Access Point
eth
VLAN100 VLAN101 VLAN102 VLAN10N
DHCP Server DHCP Server DHCP Server
Service 1 Service 2 Service NManagement
Network VM1 VM2 VMN
HYPERVISOR
Open vSwitch/VLAN tagging
Sele
ct S
erv
ice Network Appearance
from User Device
Perspective
Slicing End-to-End!
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Server-(On the Client) Service Communication
Service X LTSP
Server
Service X User 1 Machine
Service X User 2 Machine
VLAN10X
Service X User MMachine
PXE BootPXE Boot PXE Boot
Service X DHCP Server
Network Service Provider
Perspective
Service provider's servers provide addresses and applications/content to the user devices. From this perspective, everything appears to be on one private network. Service providers have complete control over how that network is set up. At the bottom we have - user devices attached to the network; In reality each of these machines is a virtual machine on a user device.Service X LTSP Server is practically a hard drive for all user machines (that are running thin client Ubuntu 12.10). Everything on a picture is running on a same vlan (here for ex. 101 for weather, or generically, for a 10X vlan); Each PXE Boot exists within a different home device (laptop 1 - service 1, laptop 2 – service 2, laptop 3 – service 3).
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Implementation…
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NSEC Demo RackA: Client Devices
B: OF Switch, Virtual Server (VS), OF Controller (OFC), Display switching between VS/OFC (KVM)
C: Manager Manager
D: Service Manager (alternated among 3 services, Weather Alert/911/EAS)
NSEC Demo Cart
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User Access Point
DHCP Server
Manager Server
LTSP Server
LTSP Server
LTSP Server
HARDWARE
User Access Point
eth
VLAN100 VLAN101 VLAN102 VLAN10N
DHCP Server DHCP Server DHCP Server
Service 1 Service 2 Service NManagement
Network VM1 VM2 VMN
HYPERVISOR
Open vSwitch/VLAN tagging
Sele
ct S
erv
ice
NSEC Demo Cart
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User Access Point
DHCP Server
Manager Server
LTSP Server
LTSP Server
LTSP Server
HARDWARE
User Access Point
eth
VLAN100 VLAN101 VLAN102 VLAN10N
DHCP Server DHCP Server DHCP Server
Service 1 Service 2 Service NManagement
Network
VM1 VM2 VMN
HYPERVISOR
Open vSwitch/VLAN tagging
Sele
ct S
erv
ice
Virtual Machines
Client DeviceOpen vSwitch
NSEC Demo Cart
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User Access Point
DHCP Server
Manager Server
LTSP Server
LTSP Server
LTSP Server
HARDWARE
User Access Point
eth
VLAN100 VLAN101 VLAN102 VLAN10N
DHCP Server DHCP Server DHCP Server
Service 1 Service 2 Service NManagement
Network
VM1 VM2 VMN
HYPERVISOR
Open vSwitch/VLAN tagging
Sele
ct S
erv
ice
Open vSwitchClient Device
Virtual MachinesServerNSEC Demo Cart
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Network
Server
Virtual Machines
Serv
ice
Serv
er
DHCP Server
Web Server
LTSP Server
Client Progs. Serv
ice
Serv
er
DHCP Server
Web Server
LTSP Server
Client Progs. Serv
ice
Serv
er
DHCP Server
Web Server
LTSP Server
Client Progs. Serv
ice
Serv
er
DHCP Server
Web Server
LTSP Server
Client Progs.
Open vSwitch
Op
en v
Swit
ch 100 101 102 103
Net
wo
rket
h
eth
eth
eth
eth
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Network
PXE Boot
Vir
tual
Mac
hin
eOpen vSwitch
Op
en v
Swit
ch 100 101 102 103
Net
wo
rket
hPXE Boot
Vir
tual
Mac
hin
e
PXE Boot
Vir
tual
Mac
hin
e
eth
eth
eth
Select Service
Home Client
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Service 1 Manager
Service 1 Server
User 1 Device
Service 2Manager
Service 2Server
User 2Device
Service NManager
Service NServer
User NDevice
VLAN 101N
e
tw
or
k
N
e
tw
or
k
Ne
t
wo
rk
Ne
t
wo
rk
N
e
t
wor
k
N
e
t
wor
kVLAN 10N
VLAN 102
ManagerServer
Isolation of Services!
Select Service
Manager Server Client
ManagerManager
Ne
tw
o
rk
VLAN 100
NSEC Demo RackA: Client Devices
B: OF Switch, Virtual Server (VS), OF Controller (OFC), Display switching between VS/OFC (KVM)
C: Manager Manager
D: Service Manager (alternated among 3 services, Weather Alert/911/EAS)
NSEC Demo Cart
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Advantages of this architecture
• Network slicing– Separation of services
– Bandwidth and QoS
– Security
– Facilitates easier management
• Isolation of services– Each service is on its own VLAN
– Fault isolation (if one service crashes, does not bring down the others)
• End-to-End Virtualization – Everything virtualized (server, client, the path in between)
– Facilitates remote reboots, updates (full control of client’s machine)
– Enables consistency of client software (all clients running the exact same software - same binaries)
– Enables scalability (easy to add additional services across all clients)
• Emergency Alert Services (EAS)– All digital
– Faster response time
– Reduced complexity and cost
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NSEC Video Demo
• NSEC Demo Cart Video
– Components, Network manager, Service provider, Clients, Weather alert and
911 (Linphone) demo
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Current / Future Work
• The presented architecture is being further developed to provide a universal application delivery system
• Service providers and users can purchase higher bandwidth / higher priorities
• Dynamic pricing based on dynamic bandwidths
User End View
Provider End View
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InstaGENI Rack coming to VCU
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Acknowledgements
Joel Hewlett
Christopher Becker
Milos ManicBruce Patterson
CITYCITYOFOF
Robert Peterson
Kasun Amarasinghe
Dumidu Wijayasekara
Kevin Handy
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Network Slicing for Emergency Communication
http://nsec.if.uidaho.edu/
Contact:
Prof. Milos Manic
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Thank You…
Questions?
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