ilham@ATHENA.MIT.EDU (Ilhamuddin Ahmed) (09/28/89)
=== Forwarded message ===================== ----- Transcript of session follows ----- 421 mitre.mitre.org.tcp... Deferred: Connection timed out during user open with mitre.mitre.org ----- Unsent message follows ----- Received: by GARFIELD.MIT.EDU (5.61/4.7) id AA11319; Sat, 23 Sep 89 17:22:16 -0400 Date: Sat, 23 Sep 89 17:22:16 -0400 Message-Id: <8909232122.AA11319@GARFIELD.MIT.EDU> From: Ilhamuddin Ahmed <ilham@athena.mit.edu> Sender: ilham@ATHENA.MIT.EDU To: mckee@mwunix.mitre.org In-Reply-To: H. Craig McKee's message of Tue, 19 Sep 89 14:40:42 EDT <8909191840.AA20076@mitre.arpa> Subject: Remote Printer Access protocol? > Organization: The MITRE Corp., Washington, D.C. > Date: Tue, 19 Sep 89 14:40:42 EDT > From: H. Craig McKee <mckee@mwunix.mitre.org> > Ilham - One of the conclusions of the overview paper on The Athena > Palladium Print System is that, "The incorporation of centralized > management into the system will allow for easier and more effective > management of the print services ...." > "Centralized" things are worrisome, particularly in a distributed > environment. Do the centralized management procedures run in a single > machine; are they essential to the AP Print System; what recovery > actions do you have planned when a failure occurs? Regards - Craig The management functions are executed on a Palladium print server from an authenticated person anywhere on the network. In the Berkeley spooler, to do any maintanence, you would have to login to the host running lpd and then run lpc. In case of Palladium, you can pause, disable, shutdown and again restart the printer/server/supervisor by not physically logging into the server but issuing a command which will send an authenticated RPC request to the server/supervisor. So as you can see, management procedures do not run on a particular machine but by authorized personnel using client programs on any machine. The case of accounting is slightly different. Currently all it does is to save the accounting information on the local disk of each print server. I am now working on the Quota server where each print server will "ask" if the person attempting to print should be allowed on not depending on their quota. If allowed, once the job is completed, the print server will send a message back to the quota server with the accounting information. In this case, the quota server is running on a single machine but I will put in sufficient fallback in that if the printserver cannot contact the quota server, it will save the accounting info to local disk and once the quota server is back up, it will queue all info back. This addition of the quota server is not in the ECMA standard but is required here at Athena. - Ilham === Forwarded message =====================
ilham@ATHENA.MIT.EDU (Ilhamuddin Ahmed) (10/02/89)
After getting quite a few requests for the Palladium documents (from people without FTP access), these documents are now available from an archive server. For those who sent me mail to me sometime back asking for these documents, I apologise for the delay. The postscript documents are split up so that it can be sent by mail. The files are as follows: -rw-rw-r-- 1 ilham 88047 Oct 1 07:56 pddesign.PS.aa -rw-rw-r-- 1 ilham 66876 Oct 1 07:56 pddesign.PS.ab -rw-rw-r-- 1 ilham 77142 Oct 1 07:56 pddesign.PS.ac -rw-rw-r-- 1 ilham 74688 Oct 1 07:56 pddesign.PS.ad -rw-rw-r-- 1 ilham 71521 Oct 1 07:56 pddesign.PS.ae -rw-rw-r-- 1 ilham 67539 Oct 1 07:56 pddesign.PS.af -rw-rw-r-- 1 ilham 59250 Oct 1 07:56 pddesign.PS.ag -rw-rw-r-- 1 ilham 58862 Oct 1 07:57 pddesign.PS.ah -rw-rw-r-- 1 ilham 54262 Oct 1 07:57 pddesign.PS.ai -rw-rw-r-- 1 ilham 63651 Oct 1 07:57 pddesign.PS.aj -rw-rw-r-- 1 ilham 57012 Oct 1 07:57 pddesign.PS.ak -rw-rw-r-- 1 ilham 6098 Oct 1 07:57 pddesign.PS.al -rw-rw-r-- 1 ilham 52046 Oct 1 07:51 usenix.PS.aa -rw-rw-r-- 1 ilham 23549 Oct 1 07:52 usenix.PS.ab -rw-rw-r-- 1 ilham 21601 Oct 1 07:52 usenix.PS.ac -rw-rw-r-- 1 ilham 15461 Oct 1 07:52 usenix.PS.ad -rw-rw-r-- 1 ilham 14021 Oct 1 07:52 usenix.PS.ae -rw-rw-r-- 1 ilham 28561 Oct 1 07:52 usenix.PS.af -rw-rw-r-- 1 ilham 12252 Oct 1 07:52 usenix.PS.ag To get one of these documents, send a mail messages to : archive@athena-dist.mit.edu with a message of : send palladium usenix.PS.aa and so on with all the split files. If you ask to send more than one file in one mail message request, it will shar those requests togther and send it in one mail message back to you. - Ilham Ahmed Project Athena, MIT.