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Server Blade Summit: Session 105
Interfaces Panel
Advanced Switching Interface (ASI) Legacy Plus
David MayhewStarGen
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If you cannot do the old stuff you will not be allowed to do the new stuff.
or
Legacy support is not everything:On a list of the 10 most important interface
characteristics, other capabilities are prominently featured in the second half of the list.
Standards based solutions are essential.
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Which Legacy
Load/Store – PCI ? Local intra-computer communication interface.
Packets – Ethernet ? Inter-computer interface Socket compatibility equally important
Packets – SCSI / SAS / Fibre Channel ? Storage interface
Data Streams – TDM ? Voice/video interfaces
ASI provides transparent legacy support for all four, plus any number of additional legacy protocols.
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Future (Plus) Interface Goals High Availability
Scalability More than dozens of endpoints
Convergence Merging of computational and communications equipment.
Decomposition Separation of CPUs from I/O devices One-to-one CPU to I/O device mapping One-to-many CPU to I/O device mapping
Sharing/Virtualization Many-to-one CPU to I/O device mapping Many-to-one virtual/system image to I/O device mapping
ASI supports for all five future system requirements.
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A quick look at shared I/O
Load / store (PCI) register compatible shared I/O model.
Packet stream shared I/O model.
There are other models, but not that can be discussed in the 90 seconds remaining in this presentation.
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Shared I/O Shared Register Interface
ASI FabricASI Fabric
Reg Set 3
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Reg Set 0
Reg Set 2
Reg Set 1
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Shared I/O Shared Gateway
ASI FabricASI Fabric
10G
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Enet
XAUIEthernet
Enet ASI
Enet ASI
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ASI supports Legacy Plus
Keep your existing software base.
Add new capabilities using legacy transparent or advanced interface features.
Do the above in a fully standards based interface. Most ASI specifications are now at a 1.1
revision level