Supporting Advanced Scientific Computing
Research • Basic Energy Sciences • Biological
and Environmental Research • Fusion Energy
Sciences • High Energy Physics • Nuclear
Physics
Chin Guok
ESnet
OSCARS
OSCARS Overview
Path Computation
• Topology
• Reachability
• Contraints
Scheduling
• AAA
• Availability
Provisioning
• Signaling
• Security
• Resiliency/Redundancy
OSCARS
Guaranteed
Bandwidth
Virtual Circuit Services
OSCARS Design Goals
• Configurable
– The circuits must be dynamic and driven by user requirements (e.g. termination end-points, required bandwidth, etc)
• Schedulable
– Premium service such as guaranteed bandwidth will be a scarce resource that is not always freely available and therefore
should be obtained through a resource allocation process that is schedulable
• Predictable
– The service should provide circuits with predictable properties (e.g. bandwidth, duration, etc) that the user can leverage.
• Usable
– The service must be easy to use by the target community
• Reliable
– Resiliency strategies (e.g. reroutes) should be largely transparent to the user
•
Informative
– The service should provide useful information about reserved resources and circuit status to enable the user to make
intelligent decisions
• Scalable
– The underlying network should be able to manage its resources to provide the appearance of scalability to the user
– The service should be transport technology agnostic (e.g. 100GE, DWDM, etc)
• Geographically comprehensive
– The R&E network community must act in a coordinated fashion to provide this environment end-to-end
• Secure
– The user must have confidence that both ends of the circuit is connected to the intended termination points, and that the
circuit cannot be “hijacked” by a third party while in use
• Provide traffic isolation
– Users want to be able to use non-standard/aggressive protocols when transferring large amounts of data over long
distances in order to achieve high performance and maximum utilization of the available bandwidth
OSCARS Current (v0.5) Imple