topic Re: New to OpenVMS in Operating System - OpenVMS

New to OpenVMS

Andrie Darma Nugroho — Wed, 23 Nov 2005 20:36:23 GMT

Hi, I'm new in VMS. Where I can get the good resources for learning about LAT(Local Area Transport) in OpenVMS. Thanks

Re: New to OpenVMS

John Gillings — Wed, 23 Nov 2005 23:04:51 GMT

Andrie,

Do you really need to know about LAT? LAT was used to communicate between hosts and terminal servers, a kind of multiplexor, several serial lines, multiplexed through a network connection.

These days most terminal servers run TCP/IP, if they're used at all (users these days tend to be running PCs).

There are no LAT specific manuals in the current documentation set. Most of what you need to know is in "HP OpenVMS System Manager's Manual, Volume 1: Essentials"

http://h71000.www7.hp.com/doc/82FINAL/aa-pv5mj-tk/aa-pv5mj-tk.HTMl

Look up LAT in the index.

The LAT Control Program (LATCP) is documented in

"HP OpenVMS System Management Utilities Reference Manual" Chapter 13.

http://h71000.www7.hp.com/doc/82FINAL/6048/6048pro_contents.html

Chances are, all you really need to know about LAT is enough to understand an existing application using LAT, so you can migrate it to TCP/IP.

Some die hards will consider the above heresy, but, that's just the way it is. Although LAT still does some things better than TCP/IP equivalents, it's pretty much a dead protocol.

Re: New to OpenVMS

David B Sneddon — Thu, 24 Nov 2005 00:35:21 GMT

Andrie,

Depending on exactly what you want to find out about LAT,
the following utility (including source) may be of
some interest

http://h71000.www7.hp.com/freeware/freeware50/dbs-latwatch/

Unfortunately, as John's heresy states, LAT is pretty
much dead these days.

Dave

Re: New to OpenVMS

Andrie Darma Nugroho — Thu, 24 Nov 2005 00:43:59 GMT

Thank you so much. My company has OpenVMS 6.1 system. It is used for the power plant control system.Now, that system got some errors in networking and network printing because some parts had broken and become obsolete.I want to migrate to TCP/IP so i try to learn about the existing system first and how they work. Thank you for your info.

Re: New to OpenVMS

Andrie Darma Nugroho — Thu, 24 Nov 2005 00:54:41 GMT

The info from John and David are really useful for me. TIA