Mark,
Wow, you woke up some brain cells! I remember DTC switching, I even did it once, about a million years ago.
Thanks, if anyone off hand knows where I can find the Communicator, I would really appreciate it.
-Craig
From: Mark Ranft <[log in to unmask]>
To: [log in to unmask]
Sent: Friday, March 4, 2016 7:17 AM
Subject: Re: DTC sharing
Back in the good old days, we used DTC Switching - a feature that allowed a DTC prompt to appear at a terminal. The user entered 'C HPA' to connect to host HPA. I believe you could set a default system. Initially DTC Switching was only available if you configured and downloaded the DTC using OpenView DTC Manager software running on a PC. Later HP set up NMMGR to allow DTC Switching.
The communicator for that release may have more details, but I only entered the MAC of the DTC on the one system that was supposed to download the DTC. The other systems would have the DTC name, but not the MAC. This allowed the system to have printers and other devices accessible on the DTC without concerns about which one downloaded the configuration.
Mark Ranft
Pro 3K
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf Of Craig Lalley
Sent: Friday, March 4, 2016 9:17 AM
To: [log in to unmask]
Subject: Re: [HP3000-L] DTC sharing
Climbing Mt. Hood is a big deal. A lot harder (physically) than shooting at 1000yards, but just as much fun.
On the DTC's I guess it could be possible to do it without leaving your chair, if
TELNET to console on B and CDTCCNTRL (has to be run from the physical console) stop the DTC subsystemthen restart it.
-Craig
From: Denys Beauchemin <[log in to unmask]>
To: 'Craig Lalley' <[log in to unmask]>; [log in to unmask]
Sent: Friday, March 4, 2016 6:08 AM
Subject: RE: [HP3000-L] DTC sharing
Big deal. I attempted to fly to the Moon last Friday.
Isn't there a service or something that listens for DTCs? I would stop that service on the systems that you do not want to download the configuration.
Denys
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf Of Craig Lalley
Sent: Friday, March 4, 2016 7:51 AM
To: [log in to unmask]
Subject: [HP3000-L] DTC sharing
OK Guys,
Sorry for the ON-topic post. (BTW, two "guys" from this list attempted to climb Mt. Hood on last Thursday)
Question: I have multiple HP3000's, sharing 1 DTC. The problem is, who controls the DTC? In the event of a power cycle, there is a race setup for which HP3000 will download the new configuration. I need system A to be "in-charge".
However, systems B or C will most likely download first. Leaving me with a manual step of unplugging the network from B and C, power cycle the DTC and wait for the A-class to download the configuration.
Is there anything that can be done to just leave the A-system in charge?
-Craig
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