SGI 10-Gigabit Ethernet Network Adapter Manual de usuario Pagina 60

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Similar to basic switching, except…
… sender can utilize multiple LIDs associated to the same
destination port
Packets sent to one DLID take a fixed path
Different packets can be sent using different DLIDs
Each DLID can have a different path (switch can be configured
differently for each DLID)
Can cause out-of-order arrival of packets
IB uses a simplistic approach:
If packets in one connection arrive out-of-order, they are dropped
Easier to use different DLIDs for different connections
This is what most high-level libraries using IB do!
CCGrid '11
60
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