Please verify the validity of this configuration:
__________
| PS/2 | one physical link /------ T
| AIX |-------------------- /// X.25 PSDN ///PAD ----- T
---------- \-----T
running multiple
AIX PS/2 X.25 LPP ASCII terminals
5601-202 (27F4254) logon to AIX
If this is a supported configuration, how many ASCII terminals can
be supported by one PS/2-80, WITH AND WITHOUT taking performance into
consideration. Also, can a RS/6000 take the place of the PS/2?
Unfortunately the RISC alternative in the configuration shown above is
not supported. The reason: lack of X.29 support to manage the X.3 PAD.
What is missing is something like the Integrated PAD function provided by
NPSI.
I thought so in the beginning, but I am not sure after reading the
announcement letter for the PS/2 AIX X.25 License Program (5601-202
or 27F4254), which is a separate product from PS/2 AIX. The
announcement says that the program will allow the PS/2 to connect to
an X.25 PSDN via the X.25 Co-processor card, and "ASCII terminals
attached through a PAD to an X.25 PSDN can send ASCII data to the
PS/2". Can you help us find the exact meaning of these words?
ANSWER
What you have said is correct. AIX/PS2 supports the PAD function. The
Risc/6000 does not. (The RT also does not provide this support.)
As far as no. of users supported; AIX/PS2 has a limit of 16 users. It
degrades in performance (depending on what it is doing, of course) after
about 7 or 8 users. The following picture shows the protocols.
________ __________________________________ _________
¦aix/ps2¦ ¦ ¦ ¦ PAD ¦
¦ ¦------¦ X.25 cloud ¦-------¦ (X.3) ¦
¦_______¦ ¦_________________________________¦ ¦_______¦
¦
¦<------------>¦ ascii terminals
x.25
¦<------------------------------------------------------>¦
x.29
If you desire this pad function for the RISC/6000, I would suggest
submitting an RPQ for it. (By pad function support I mean the X.29
portion in the above diagram. This is known as end-to-end pad functions.)
Third party programs can provide the X.29 support to the RISC/6000
For further information please contact:
+ Hugbunadur hf.
P.O. Box 437
202 Kopavogur
ICELAND
Tel: 354-1-641024
FAX: 354-1-46288
+ SYNAPTEL
13 Avenue Morane Saulnier
Le Mermoz
78140 VELIZY
FRANCE
Tel: 33-1-30 67 17 00
Fax: 33-1-34 65 39 13
+ Systems Strategies Inc.,
One Penn Plaza
Suite 4211
New York
NY 10119
USA
Tel: (212) 279 8400
FAX: (212) 967 8368
Systems Strategies Ltd.,
The Gatehouse
2 Richmond Road
Isleworth
Middlesex
ENGLAND
Tel: 44-81-568 9997
FAX: 44-81-569 7102
S e a r c h - k e y w o r d s:
X.25 X25 PS/2 RISC/6000
WWQA: ITEM: RTA000074654 ITEM: RTA000074654
Dated: 01/1996 Category: ITSAIXPS2
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