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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

18.0. "DS90L and SSU" by BODRUM::GUVENER () Mon Dec 23 1991 05:48

    
    
    Hi,
    
    Is it possible to support split screen and one session on each splitted
    screen using a DS90L, VT420 and SSU using one single port of DS90L? 
    
    If yes, how? What are the SSU commands for LAT support?
    
    Thanks,
    Nur
T.RTitleUserPersonal
Name		DateLines
18.1Here's how to use VAX SSU with DECserver 90LPRNSYS::LOMICKAJJeffrey A. LomickaMon Dec 23 1991 12:0741
Yes.  SSU on VMS runs through all LAT terminal servers.  There are no
specific SSU commands for LAT terminals, but to use SSU with LTA
devices, you have to have virtual terminal support enabled on your VMS
system. I wrote the following instructons for SSU, which cover this
case.  The important part is the TTY_DEFCHAR2 part, and the CONNECT VTA0 part.

        Installation proceeds as follows:

        1. Install VMS/SSU using the regular VMS VMSINSTAL procedure.

        First check your VMS system to be sure SSU installed.  (Do a $ SHOW
        DEV TD.  If you don't have any, it's not installed.)

        If SSU is not installed on your VMS system, tell your system
        manager that the optimal use of the VT330 and VT420 terminals
        requires that he install VAX SSU.  To be really useful, SSU
        requires that VTA's be enabled by default, which means a SYSGEN
        parameter of:

                TTY_DEFCHAR2=135170

        And the following in SYSTARTUP_V5.COM:

                $ SYSGEN := $SYSGEN
                $ SYSGEN CONNECT VTA0/NOADAPT/DRIVER=TTDRIVER
                $ @SYS$STARTUP:SSU$STARTUP

        This is all explained in the installation instructions for VAX
        SSU, but using a lot more words.  After installing SSU and issuing
        the above commands, you will have to log out and back in again to
        use VAX/SSU.  If you were not already using VTA's by default, you
        will have to change TTY_DEFCHAR2 in MODPARAMS.DAT and in SYSGEN,
        and reboot.

                $ MCR SYSGEN
                USE CURRENT
                SET TTY_DEFCHAR2 135170
                WRITE CURRENT
                EXIT
                $ @SYS$SYSTEM:SHUTDOWN 0 SHUTDOWN Y N REBOOTING Y NONE
18.2POTS::VISSERMon Dec 23 1991 12:0913
    It is possibel using the components you mention, which include SSU. 
    SSU provides TDSMP support at the virtual port on the VMS system, so
    that the terminal and the port can maintain two sepparate data streams
    on a single LAT session.  I have tried this and the performance isn't
    very good.
    
    As I recall, set the terminal up for sessions 1 & 2 on one port, and
    then run ssu on the vax once the first seesion is established.
    
    Regards,
    
    John