Transcript The HOPI Testbed and the new Internet2 Network

The Dynamic Circuit Network
Rick Summerhill
Chief Technology Officer, Internet2
[email protected]
Internet2 Fall Member Meeting
9 October 2007
San Diego, CA
Contents
• Challenges
• The HOPI Project
• The DRAGON Investigation
• The Internet2 National Infrastructure
• The DICE Collaboration
• Control Plane Developments
Challenges - Applications
• Applications in the R&E 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 R&E community support these
applications?
Challenges - Infrastructure
• Five years ago it became clear the R&E community
would have access to greater infrastructure
• The early R&E networks were IP based
• With the advent of access to dark fiber, the R&E 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
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?
HOPI General Problem
HOPI Topology
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)
Heterogeneous Network Technologies
Complex End to End Paths
“Horizontal” multi-layer adaptations for multi-domain
AS 2
AS 1
IP Control Plane
IP Control Plane
AS 3
IP Control Plane
VLSR
VLSR
Ethernet over
WDM
End
System
Ethernet Segment
VLSR Established VLAN
Ethernet over
SONET
Router MPLS LSP
End
System
Ethernet
Lambda Switch
SONET Switch
Router
Ethernet Segment
VLSR Established VLAN
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
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
Web page
XML
Interface
CLI Interface
ASTB
One NARB per Domain
Interdomain Path Computation – A
Hierarchical Architecture
Summarized/Abstract InterDomain Topoloy (A single link state flooding area)
NARB
w/RCE
NARB
w/RCE
NARB
w/RCE
IntraDomain Topoloy - Area 2
IntraDomain Topoloy - Area 1
IntraDomain Topoloy - Area 3
• 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.
• NARB’s assemble the partial paths into a full path by speaking to one another across
domains.
Internet2 Infrastructure
Nodes
Nodes
Nodes
Nodes
Nodes
Nodes
Nodes
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
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
Dynamic Circuit Networks
Web Service Control Plane Interfaces
IDC
Inter-Domain
Controller (IDC)
WS UNI
WS E-NNI
WS E-NNI
WS I-NNI IF
Management
System
WS I-NNI IF
(I-NNI)
GMPLS
(I-NNI)
IDC
WS I-NNI IF
MPLS
(I-NNI)
WS UNI
SONET/TDM
(Dataplane)
Ethernet/L2SC
(Dataplane)
Router(MPLS)/PSC
(Dataplane)
• 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
Web Service based E-NNI
Main 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
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
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
Questions?
[email protected]