Re: Virtual Device spontaneous combustion!

[John Earl <johnearl@xxxxxxxxxxx>]

Alexy,

Thanks for the response....

I have a question about this statement...


> What you see is the documented behaviour of QAUTOVRT. System will not
> create NEW devices to go beyond QAUTOVRT. Otherwise, system will not delete
> virtual devices and generally will not try to decrease their number down to
> QAUTOVRT setting.
>
I don't want the system to delete devices, I just want it to leave them alone.
If I have a 3477 defined, and someone comes along emulating a 3197, I want the
system to do _nothing_.  Instead it appears that it will delete an existing
device and then create a new one that will be usable by a 3197 device type.   I
should be able to control this behavior shouldn't I?

Also, can you point me to the manual where this is documented?   I havn't 
located
it yet.

Thanks for your help,

jte


pytel@us.ibm.com wrote:

> QAUTOCFG relates to directly attached devices only (such as twinax
> workstations and printers, tape devices etc.)
> QAUTORMT as name suggests, apply to remote devices configuration - such as
> workstations attached to remote control units.
> Auto create controllers setting controls only APPN operation - creating
> APPN/APPC controllers for an incoming request on a LAN.
> What you see is the documented behaviour of QAUTOVRT. System will not
> create NEW devices to go beyond QAUTOVRT. Otherwise, system will not delete
> virtual devices and generally will not try to decrease their number down to
> QAUTOVRT setting.
> If you want to have finer control over virtual device allocation/creation,
> there are two mechanisms for this:
> - named device support (sessions reference pre-created devices)
> - TELNET exit program (described in TCP/IP Configuration and Reference),
> which can decide, which device can be used for a specific session.
>
> Best regards
>     Alexey Pytel
>
> John Earl <johnearl@toolnet.com> on 04/11/99 03:57:49 PM
>
> Please respond to MIDRANGE-L@midrange.com
>
> To:   "MIDRANGE-L@midrange.com" <MIDRANGE-L@midrange.com>
> cc:    (bcc: Alexei Pytel/Rochester/IBM)
> Subject:  Virtual Device spontaneous combustion!
>
> We keep getting bitten by an autoconfig type of a problem
> with our virtual devices, but I can't figure out why it's
> happening.
>
> QAUTOCFG is set to '0' (off)
> QAUTORMT is set to '0' (off) ... (but this _should_ be
> irrelevant)
> QAUTOVRT is set to 0
> And the TCPIP interface line description is set to Auto
> Creat Controllers(*NO)
>
> Yet, on whenever someone connects to an existing virtual
> device using a different device type (a 3477 for example
> trying to connect to an existing 3197 device description),
> the QTGTTELNET job will delete and recreate the device to
> suit fir the new device type.
>
> This isn't what we want to happen.  We want the system to
> keep searching for a valid device and if it doesn't find a
> match, then refuse connection.   Unfortunately, I can't seem
> to get the system to stop authomatically re-creating virtual
> devices.
>
> (OS=V4R3)
>
> Help!
>
> jte
>
> --
> John Earl   johnearl@toolnet.com
>
> PowerTech Toolworks  206-575-0711
> PowerLock Network Security www.toolnet.com
> The 400 School   www.400school.com
> --
>
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--
John Earl   johnearl@toolnet.com

PowerTech Toolworks  206-575-0711
PowerLock Network Security www.toolnet.com
The 400 School   www.400school.com
--


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