F/C 2720/2722 FDDI VS. F/C 2724/2723 FDDI
ITEM: RTA000028908
We understand (but haven't seen anything in writing) that the new
F/C 2724/2723 FDDI cards are functionally equivalent and have same
performance and same interfaces as the 2720/2722 cards (e.g., the
bypass switch interface). We understand that the difference is
the card form factor and commonality w/ PS/2 hence lower cost.
If this is the case I have a bunch of outstanding orders I've got
to get revised.
Can you confirm or deny this?
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A: My understanding is that the new cards are functionally equivalent.
The PS/2 form factor cards:
- have a larger ribbon connector to the xcard
- xcard has same type of larger connector
- can plug in cable one way on primary
- card is smaller (chips on both sides)
- fiber has a different optical transceiver
- Copper has a shielded pair transceiver
With 3.2.3 the device driver has added function which allows a user to be
a "LAN Manager". The transmission of SMT frames and the reception of
non-LLC frames has been enabled in the driver. This added function
allows the "LAN Manager" to reside on the 6000.
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In summary:
All of the statements included in the above answer are correct. The new
PS/2 form factor cards do require a new device driver which is available
in AIX 3.2.3 Extended Support. The cards will not work without this
driver.
As stated in the Announcement Letter 192-271 dated 10/20/92, " In
addition to AIX/6000 version 3.2.2, these new FDDI adapters require the
installation of the AIX/6000 version 3.2.3 Extended Support programming
feature and feature #4967 ordered separately.
These new FDDI adapters ARE the same as used in the PS/2.
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This item was created from library item Q618488 SG145
Additional search words:
ARISC CUSTORG FDDI IX JAN93 RISC SG145 VS 2720 2722 2723 2724
WWQA: ITEM: RTA000028908 ITEM: RTA000028908
Dated: 11/1996 Category: RISCTCP
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