Model 270 anomalies

[Philipp Rusch <Philipp.Rusch@xxxxxxxxxxxx>]

Hello all,

we have a problem IBM is not really able to solve,
because hardware says its a lic-problem and could only be
solved by software techs, and software says its a hardware-
related problem :-(  ...
I searched IBM PTF site and did not find a thing.
Sorry for the long post, but it is a rather subtile problem ...

Ok, here's the situation:

Model 270 - no extension box, but all slots filled up with
cards like they were placed and ordered through IBM configurator.
Console was ordered to be Operations Console through direct PC-
connection, that is the first V.24 Controller in the system.
LAN connections ordered are Token Ring (TR = 2744), Ethernet
100 MBit (ETH100 = 2838) and Ethernet 1 Gigabit (ETH1G = 2760).
The slots were filled up as follows:

--- Top ---
C07 = 2771 (I/O controller ECS modem and V.24 line to PC)
C06 = 2838 ETH100
C05 = 2749 SCSI external tape controller (not of interest here)
C04 = 2842 PCI controller to handle slots C03 & C02
C03 = 2744 TR 16 MBit
C02 = 2760 ETH1G
C01 = 27xx RAID 5 Harddisk controller
-- Bottom ---

If you want to use the LAN console thing as well as the directly
connected PC console, the slots C06 or (alternatively) C05 is
associated with this console definition and cannot be used
otherwise (no normal AS/400 connections through TCP/IP and so on).
This is defined and activated (or DE-activated) through DST.

Now comes the problem: the machine came preloaded with V5R1 and
seemed to have both LAN and V.24 console activated.
We used V.24 console cable to power up and further install
the machine. When it came to LAN config, TR and ETH1G controller
came up well, but the ETH100 said there is another device des-
cription of type " "  (blank) occupying that hardware resource.
OK, this meant to manually IPL and go to DST, where I DE-activated
LAN console and expicitly selected direct console afterwards to
be sure to have a valid console config.
Now every second IPL failed with the resource of slot C06 being
occupied by DST - the LAN console went active again !
I went to HW-service manager in DST and this 2838 showed
operational - no suprise - but when displaying associated
resources with this slot it was the 2771 AND the 2838 being
found for that resource - strange.
I instantly thought that HW service manager made a mess of this cards
record and thought of completly deleting everything defined for this
card by removing it from the system and power up again without it.
To make it short: this time everything seemed well, I deleted every-
thing in DST and on OS/400 DEVD which was associated with this resource
and started from new. Everything came up fine - until the first IPL
we did after every LAN line went active...
To my surprise the old LAN console defintion in DST was still there
(IP adress and mask and so on) , where does this stick to ???

I then changed positions of the cards to keep away from slot C06
(the first one for the LAN console), so I took C05 to C06 and put
the 2838 in slot C05. This time after IPL slot C05 showed up in DST
as being an "occupied slot" but no feature was recognized !
Was the 2838 defective ?
OK- I took another 2838 from a 720 machine and did the same procedure
again - same result.  BTW the other (suspectible) 2838 is working in
the 720 since then without any problem.

I was feeling rather helpless now, but I went on: lets take the 2744
(TR) from slot C03 and put it in slot C06 and place the tape controller
in its old position in C05 again. There is something new to the model
270 and the 820's: you have an upper limit of "speed points" which sum
up for the PCI controller which controls the bus they are in. So I
thought it would be a good idea to place the low speed LAN feature (TR)
in slot C06 instead of the high speed (100MBit).
Same game: everything came up fine: I had three LAN lines now up and
running ! Until - you guess it : the next IPL took away the TR line.
Thats were we are right now: TR access is routed through another machine
on the ethernet which is going away soon, so we need that line.

Is this a lic problem ? Is our machine "too full" with cards ?
Is this LAN card in slots C06 or C05 never meant to be anything else
than a LAN console ? Shall we go to an expansion tower with more busses
simply for one ontroller card ???
We are on V5R1 CumPTF  C1163510 - the newest avalaible.

Thanks for any input and sorry for the long post again.

Regards from germany, Philipp Rusch

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| EDV Beratung Rusch          EDP Consulting Rusch                |
| Philipp Rusch               Mailto: Philipp.Rusch@rusch-edv.de  |
| Am Errlich 9                WWW   : http://www.rusch-edv.de/    |
| D-61191 Rosbach,                                                |
| Germany                                                         |
| Phone: (+49) 6003 3972      Mobile : (+49) 172 89 86 230        |
| Fax  : (+49) 6003 3795                                          |
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