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Circuit Services
Christian Todorov
Internet2 Fall Member Meeting
October 9, 2007
Internet2, Circuits & You
• Where we have been
• Changing needs
• Why circuits are different
• How Internet2 provides circuits
• Internet2 Circuit offerings
• Who to contact
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Abilene Network
• Internet2’s previous network (Abilene)
was IP only and based on unprotected
10G (OC-192) waves on the Qwest
infrastructure
• Utilized IS-IS
• Natively supported IPv4/v6 and multicast
• IP is great… for most people… most of
the time…
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Changing Needs
• As the capabilities available to the research
community changed, the demands on the
network also changed
• e-science applications and facilities grew
and exerted greater performance pressures
on the network where TCP and shared
environments were no longer acceptable
• Dedicated infrastructure was becoming a
requirement
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Demands on the Network
• Entering the age of large scientific facilities
• Large Hadron Collider at CERN
• Very Long Baseline Arrays (radio astronomy)
• Large Synoptic Survey Telescope (2010-13) – 30TB/night
• An increasingly diverse set of demanding applications are
utilizing network resources
• Telemedicine: BIRN project, proteomics, tele-surgery, remote
ICU, radiology: high-resolution 3D color fMRI brain scan = 4.5PB
• Telepresence: master classes, virtual classrooms, tele-psychiatry
• High performance video delivery: Uncompressed HD, Cinegrid
• Disaster Recovery and distributed storage
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The New Requirements
• High performance applications are
dependent on high performance networks
• Networks must be fast, reliable, scalable,
have flexible architectures, be cost
effective, capable of delivering multiple
services across multiple network layers,
easy to operate and maintain, and have a
view towards the future
• Enable the user – the network as a service
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The Internet2 Network Overview
• Layer 1: Managed wavelengths from Level(3) Communications
• Level(3) owns and manages Infinera optical gear: responsible for
software upgrades, equipment maintenance, remote hands, sparing,
NOC services
• Internet2 NOC has total provisioning control
• Layer 2: Internet2 owned and managed Ciena CoreDirectors
• Using DRAGON GMPLS control plane
• Layer 3: Internet2 owned and managed Juniper T640s
• Expanded Observatory
• Platform for layer 1/3 network performance data collection, collocation,
experimentation
• perfSONAR integration for intra- & inter-network performance analysis
• International connectivity
• Layer 1 network extended to international exchange points in Seattle,
Chicago and New York City
• Peering points in Seattle, PAIX, Equinix Chicago
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Title of slide
• Level 1
• Level 2
• Level 3
• Level 4
• Level 5
Christian Todorov
Circuits: Why They are Different
• IP networks switch packets of information across shared networks to
multiple locations and operate at Layer 3
• Shared packet networks are well suited to applications where data transfers are
intermittent, multi-point, or have smaller file size transfer requirements
• A “best-effort” service
• Represents the largest number of uses of the current network
• Circuits connect two discreet endpoints with dedicated connections and
operate at Layer 2 or below
• Circuit based networks are well suited to long duration, point to point connections
that support large data transfers or transfers that require very predictable network
performance
• Is a dedicate resource
• Connection oriented service
• Represents a small number users who have high demands of the network:
bandwidth, performance, desire to run alternative protocols
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Wavelength & Circuit Services
• Connection oriented services provide for:
• Guaranteed bandwidth and predictable jitter and latency
(repeatable, dependable performance between collaborating
sites)
• Traffic segregation (support specific policy or traffic
engineering requirements)
• Router bypass: Express links created for high-bandwidth,
limited duration long-haul traffic reducing the need for midpath L3 interfaces
• Cost efficiency: L3 router blades cost > L2 ports > L1 or L0
interfaces
• Capability tradeoff but could possibly improve performance
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Internet2 Circuit Services
• Internet2 offers two types of Circuits
• Static circuits
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Exist on the Circuit Infrastructure supported by both the Infinera and Ciena devices
Manually provisioned by the NOC
50Mbps to 10Gbps
Fee for service
Longer duration: months to years
Can have dedicated protection
A contracted, assured service
• Dynamic Circuits
• Exist within the Dynamic Circuit Network (DCN) supported by the Ciena
CoreDirectors
• Provisioned automatically
• Requires participation in the DCN protocols
• 50Mbps to 10Gbps
• Have no fee for use
• Short duration ~2 weeks
• Best effort service
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Connecting to the Internet2 Circuit Infrastructure
• Accessing the Circuit Infrastructure
• One must have a connection to the Internet2 circuit infrastructure in
order to access the Internet2 circuit services.
• The circuit connection is separate from the IP connection
• The standard connection to the circuit infrastructure is either 1GE or
10GE – other interface types are supported at an additional fee
• ONE physical connection to the circuit infrastructure on the Ciena
CoreDirectors will support BOTH the static circuit service AND the
Dynamic Circuit Network
• For the first year, the connection to the Cienas are available to IP
connectors at no additional fee for a standard connection (1GE or
10GE) that is equal in bandwidth to the contracted IP connection,
e.g. 10G IP connectors receive the use of a 10G circuit connection.
(Non-connectors may be subject to additional port fees)
• Circuit connections are available to Connectors, members and peers
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Internet2 Network
Node Architecture
•Example of Optical only
Node for connected RON
or Peer Network
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Internet2 Network
Node Architecture
•Infinera DWDM Gear Static at the start
•Grooming capabilities in
ADM to provide sub
channels and HOPI types of
activities at the start
•Simplified and
standardized interface to
connectors, exchange
points, and other global
research and education
networks - 2 x 10 Gbps
interfaces
•Measurement and control
servers will support the
node
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Dynamic Circuit Network
• The Dynamic Circuit Network (DCN) is considered a network due
to its characteristics and behavior: it is protocol driven, has the
capability to determine paths, can exchange network information
with neighbors and it is aware of its own resources
• The DCN concept expands the notion of networking where a
network facility is able to provide the most appropriate resource
for a given demand
• Dynamic Circuit Network (DCN) is developmental until 1-1-08 and
persistent thereafter
• Invitations are currently being sent out by Internet2 to the
connectors for participation in DCN
• A DCN connection does not imply a connection to the IP network
• DCN participation is critical to its success as its value grows with
the number of participants
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Static Circuits
• Static circuits are manually provisioned by the NOC and are
intended for longer durations: the typical concept of a circuit
• A contracted, fee for service offering based on bandwidth,
duration and distance
• Can exist both on and off of the Internet2 network footprint
• Intended to provide dependable, dedicated and
deterministic service to connectors
• A static circuit does not imply a connection to the DCN or
the IP network
• Includes full 10G waves
• Available now
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Who to Contact
• DCN connection requests or information:
• [email protected]
• Rick Summerhill is lead
• Static circuit requests, fees and information:
• [email protected]
• Christian Todorov is lead
• Member and Partner Relations assistance:
• [email protected]
• Marianne Smith is lead
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Questions?
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