>b) If "Hipersockets are implemented entirely in software" is there really a >requirement to have a G5/G6/Multiprise > 3000/z900 ???
The Red paper pdf is at: " http://www.redbooks.ibm.com/redpapers/pdfs/redp0160.pdf";. It mentions on page 1, "Since it is a zSeries micorcode function, it requires EC level maintenance. Before you implement HiperSockets, check with your local service representative." For VM, on page 29, it mentions that "z/VM R4R2 also supports the HiperSockets function on "guest LANs" ... (simulating) the HiperSockets functon ... without the need for supporting IQD CHPIDs." It looks like that if z/VM R4R2 runs on your processor, then you ought to be able to run HiperSockets. I leave it to the VM to discuss. Hipersockets is an extension of Queued Direct I/O (QDIO) used by Fast Ethernet Express and Gigabyte Express OSA cards, which is only avialble on later CEC's. QDIO is also used by FICON on the zSeries. The extension is called IQDIO (internal QDIO). It is really a combinatoin of "software" and LIC (licensed internal code) and requires a LIC update to the processor, only available to later processors. It requires a new control unit (IQD) on a channel in the IOCDS and communications is via the "start subchannel" interface to a subchannel address. For Linux native and LPARs, you would then code the qeth interface much as you do an FEX or GBX card. MVS has some updates mentioned in the PSP bucket as well as VM. Since it requires an IOCDS change, it looks like it'll be next year before I can give it a try. Regards, Jim Linux S/390-zSeries Support, SEEL, IBM Silicon Valley Labs t/l 543-4021, 408-463-4021, [EMAIL PROTECTED] ** Grace Happens **
