Rick Summerhill

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The Dynamic Circuit Network

• Rick Summerhill
• Chief Technology Officer, Internet2
• rrsum_at_internet2.edu
• Internet2 Fall Member Meeting
• 9 October 2007
• San Diego, CA

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Contents

• Challenges
• The HOPI Project
• The DRAGON Investigation
• The Internet2 National Infrastructure
• The DICE Collaboration
• Control Plane Developments

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Challenges - Applications

• Applications in the RE community are very
  demanding
• Large Data Flows, for example, from LHC
• 8 Gbps flows for hours on end
• UNL to FERMILAB was a recent example
• Flows that demand deterministic capabilities
• Very high definition video
• eVLBI applications in radio astronomy and the SKA
  project
• Applications that demand very high bandwidth for
  relatively short periods of time
• Backplanes for distributed computers or content
  distribution schemes
• How should the RE community support these
  applications?

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Challenges - Infrastructure

• Five years ago it became clear the RE community
  would have access to greater infrastructure
• The early RE networks were IP based
• With the advent of access to dark fiber, the RE
  community now had access to layers 0 and up
• Given the application challenges, what is the
  best way to utilize that infrastructure?
• Also, access to additional infrastructure has
  given rise to the hybrid networking idea -
  meaning operating networks at multiple layers in
  a coherent way
• Three years ago, Internet2 created the Hybrid
  Optical and Packet Infrastructure (HOPI) project
  to examine this

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HOPI Project - Overview

• How does one effectively use a richer set of
  capabilities available to network designers and
  end users?
• Core IP packet switched networks
• A set of optically switched lightpaths available
  for dynamic provisioning
• Examine a hybrid of shared IP packet switching
  and dynamically provisioned circuits
• HOPI Project (Hybrid Optical and Packet
  Infrastructure) to examine how to put it all
  together?
• Dynamic Provisioning - setup and teardown of
  optical paths
• Hybrid Question - how do end hosts use the
  combined packet and circuit switched
  infrastructures?

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HOPI General Problem
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HOPI Topology
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HOPI Control Plane

• HOPI emulates an optical circuit switched
  environment while using Ethernet switches
• Need a control plane and development
• Internet2 created an RFP for a HOPI Testbed
  Support Center (TSC)
• The MAX, NCREN, and Indiana GigaPoPs responded
  and won the RFP
• Lead to the use of the DRAGON control plane
  elements
• DRAGON is NSF funded and GMPLS based - Dynamic
  Resource Allocation of GMPLS Optical Networks
  (DRAGON)

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Heterogeneous Network TechnologiesComplex End to
End Paths
Horizontal multi-layer adaptations for
multi-domain
AS 2
AS 1
IP Control Plane
AS 3
IP Control Plane
IP Control Plane
VLSR
Router MPLS LSP
Ethernet over SONET
VLSR
Ethernet over WDM
End System
End System
Ethernet Segment VLSR Established VLAN
Ethernet Segment VLSR Established VLAN
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DRAGON Control Plane -Key Elements

• Virtual Label Swapping Router VLSR
• Open source protocols running on PC act as GMPLS
  network element (OSPF-TE, RSVP-TE)
• Control PCs participate in protocol exchanges and
  provisions covered switch according to protocol
  events (PATH setup, PATH tear down, state query,
  etc)
• Network Aware Resource Broker NARB
• Intradomain listener, Path Computation,
  Interdomain Routing
• Client System Agent CSA
• End system or client software for signaling into
  network (UNI or peer mode)
• Application Specific Topology Builder ASTB
• User Interface and processing which build
  topologies on behalf of users
• Topologies are a user specific configuration of
  multiple LSPs

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VLSR- Virtual Label Switching Router

• GMPLS Proxy
• (OSPF-TE, RSVP-TE)
• Local control channel
• CLI,TL1, SNMP, others
• Used primarily for ethernet switches
• Provisioning requests via CLI, XML, or ASTB

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Interdomain Path Computation A Hierarchical
Architecture

• NARB summarizes individual domain topology and
  advertise it globally using link-state routing
  protocol, generating an abstract topology.
• RCE computes partial paths by combining the
  abstract global topology and detailed local
  topology.
• NARBs assemble the partial paths into a full
  path by speaking to one another across domains.

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Internet2 Infrastructure
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Nodes
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Nodes
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Nodes
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Nodes
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Nodes
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Nodes
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Nodes
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Dynamic Circuit Network

• Similar to the IP network model, but using
  different protocols
• Connections are one armed
• Physical connection
• Control Plane Protocols
• Create Circuits in seconds for periods of hours
  to days
• Only through the Ciena equipment at the start,
  eventually evolving to the full platform

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Current Control Plane Developments

• Intra-domain
• Currently on the Ciena platform, to be deployed
  on the Infinera platform in the future
• Have an Installed working configuration on the
  Cienas
• Inter-domain
• Working with the DICE (Dante, Internet2, Canarie,
  ESnet) group
• Working on Topology, Path Computation and
  Scheduling, Signaling, and Lookup Services (think
  a circuit based DNS)
• Web service based communications
• Face-to-face meeting every three months and
  biweekly calls

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Dynamic Circuit NetworksWeb Service Control
Plane Interfaces

• Web Services provides a mechanism to deal with
  heterogeneous control planes
• inspired by the standards bodies work on control
  plane protocols, but not just recreating that
  work at the web service level

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Web Service based E-NNIMain Components

• Routing
• Topology Exchange
• Domain Abstraction
• Varying levels of dynamic information
• Resource Scheduling
• Multi-Domain path computation techniques
• Resource identification, reservation,
  confirmation
• Signaling
• path setup, service instantiation
• Host Lookup Service
• Uses DNS pointers

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More on the Demo

• Start with Lambdastation
• Assumes the circuit is in place
• Modifies the routers in real time to switch the
  flow from the IP path to the circuit path
• What was new in this demo was the addition of the
  ability to setup the circuit in real time
• Lambdastation called the DC network to setup the
  circuit using the DC network control plane
  protocols
• PerfSonar project provided the monitoring tools
  in the demo

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Network Research Example - Phoebus

• Phoebus - TCP data flows
• File transfers over long distance segments not
  requiring congestion control
• Lead by Martin Swaney at the University of
  Delaware

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Questions? network_at_internet2.edu