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In case of a network or end-host problem, the network path is automatically be re-provisioned, in

a time short enough to maintain the TCP session and thus allow the data transfer to continue.

These path-recovery features have already been field-tested in an early prototype of VINCI.

A high-level view of the VINCI system is displayed in Figure 24, showing the network control

plane consisting of MonALISA distributed services and agents, the Ciena CoreDirector

multiservice switches (optical multiplexers), and the end-host agents used to monitor and

configure the end-systems. The whole system is actively monitored by the MonALISA

monitoring framework.

Figure 24: The VINCI network services: MonALISA distributed services in the control

plane, optical multiplexers (Ciena CoreDirectors) in the data plane, LISA end-host agents

and MonALISA real time monitoring.

LambaStation:

The LambdaStation 0 project is aimed to enable dynamic allocation of alternate network paths for

traffic of production SciDAC 0 applications and to forward designated flows across LAN,

negotiates with reservation and provisioning systems of WAN control planes, be it based on

SONET channels, demand tunnels, or dynamic circuit networks. It creates End-To-End circuit

between single hosts, computer farms or networks with predictable performance characteristics,

preserving QoS if supported in LAN and WAN and tied security policy allowing only specific

traffic to be forwarded or received through created path.

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