Routable IB for the Long Haul

Finally…. (thanks John Walton for the heads up)

Longbow XR allows arbitrarily distant InfiniBand fabrics to communicate at full bandwidth through 10Gbits/s Wide Area Networks. The WAN connection is managed out of band, and except for flight time induced latency is transparent to the InfiniBand hardware, stacks, operating systems and applications.
XR achieves flow control by shaping WAN traffic and managing buffer credits to ensure extremely high efficiency bulk data transfers — including RDMAs — making the system a highly effective transport mechanism for very large data sets between geographically separated InfiniBand equipment.

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