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Conference irocz::terminal_servers

Title:Terminal Servers
Notice:See Note 2 for Directory of important notes. Please use keywords.
Moderator:LAVC::CAHILLON
Created:Tue May 14 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3547
Total number of notes:12300

3441.0. "Remote sessions remain active, after disconnect." by KERNEL::FREKES (Like a thief in the night) Tue Feb 18 1997 07:22

    Folks
    
    I have a really trivial question. 
    
    I have a ds900tm with port 32 setup as a remote access port, offering a
    LAT service. This port is cabled to port 31, (represents a modem line).
    
    Users set host/lat to this service, they will then get a local prompt
    on the other port. From here they can connect to another LAT service of
    there choice. However the users are not loging out of the remote session
    correctly, they are just terminating the local session, (to port 32).
    The connection from the remote port to the LAT service remains active.
    When another user connects to this local LAT service, they are logged
    straight into the remote persons account. Due to the nature of the work
    being done, inactivity logout is not an option. But I need a way of
    terminating the remote session, should the local one fail. 
    
    What other alternatives are there open to me?
    
    This is a customers configuration, which I have been asked to look at.
    
    Regards
    	Steven F.
                                                              
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3441.1LAVC::CAHILLJim CahillTue Feb 18 1997 10:3322
> they are just terminating the local session, (to port 32)

If I read your description of the configuration correctly, the session to
port 32 is a remote session.

>    The connection from the remote port to the LAT service remains active.
>    When another user connects to this local LAT service, they are logged
>    straight into the remote persons account. Due to the nature of the work
>    being done, inactivity logout is not an option. But I need a way of
>    terminating the remote session, should the local one fail.

Now I'm getting confused.  When they're done using the "local LAT service",
why can't they simply log out of that port, which I believe is port 31?

I'm not sure if we can come up with something which (1) allows users to
"connect to another LAT service of there choice" yet (2) automatically
logs them out of port 31 *and* terminates the remote session when they
terminate the local session.

This is a rather unique configuration.

Jim
3441.2Finger and Brain co-ordination problemsKERNEL::FREKESLike a thief in the nightTue Feb 18 1997 10:4633
Jim 
	Sorry about that, let me make myself clearer. The configuration is 
essentially the same as the one below.


	User						
    ______|________________
	    __|__
	   | Server1
		---|
		|
		|
	    Modem Link
		|
		|
	      __|__
             | Server2
                  |---|
         ---------|-----------|----
			      |
			    Host


The user establishes a LAT session with the port on server1, via a LAT service.
He gets the local prompt of server2. From here he establishes an new LAT session
to the host. If his session between himself and server1 is terminated, the 
session he was using between server2, and the host remains active. The next 
user comes along, and gets the same session.

This is what we are trying to resolve.

Steven
    
3441.3IROCZ::D_NELSONDave Nelson LKG1-3/A11 226-5358Tue Feb 18 1997 10:5912
RE: .2

Is the modem link "nailed up" or is it initiated each time the LAT service
to server 1 is initiated?  If you can use the modem control signals at server
2 to indicated that the LAT service at server 1 went down, this might be a
silution.  This requires modem control to be used on both server 1 and server
2.

Regards,

Dave

3441.4Already using signal controlKERNEL::FREKESLike a thief in the nightTue Feb 18 1997 11:2655
Jim
	As you can see they are both already using signal control, in the 
	absence Modem control
	This is the port on Server1.


Port 32: (Remote)                      Server: DS900TM

Character Size:            8           Input Speed:               9600
Flow Control:            XON           Output Speed:              9600
Parity:                 None           Signal Control:         Enabled
Stop Bits:           Dynamic           Signal Select:  CTS-DSR-RTS-DTR

Access:               Remote           Local Switch:              None
Backwards Switch:       None           Name:                   PORT_32
Break:                 Local           Session Limit:                4
Forwards Switch:        None           Type:                      Ansi
Default Protocol:        LAT           Default Menu:              None
                                       Dialer Script:             None
Preferred Service: None

Authorized Groups:   0, 10
(Current)  Groups:   0, 10

Enabled Characteristics:
Autoprompt,  Broadcast,  DTRwait,  Inactivity Logout,  Input Flow Control,
Loss Notification,  Output Flow Control


This is the port for server2

Port 31: TEST                          Server: DS900TM

Character Size:            8           Input Speed:               9600
Flow Control:            XON           Output Speed:              9600
Parity:                 None           Signal Control:         Enabled
Stop Bits:                 1           Signal Select:  CTS-DSR-RTS-DTR

Access:                Local           Local Switch:              None
Backwards Switch:       None           Name:                   PORT_31
Break:                 Local           Session Limit:                4
Forwards Switch:        None           Type:                      Ansi
Default Protocol:        LAT           Default Menu:              None
                                       Dialer Script:             None
Preferred Service: None

Authorized Groups:   0
(Current)  Groups:   0

Enabled Characteristics:
DSRlogout,  Inactivity Logout,  Input Flow Control,  Output Flow Control


Steven
    
3441.5LAVC::CAHILLJim CahillWed Feb 19 1997 11:3216
The port characteristic "DSRlogout" causes the port to be logged out when
DSR is dropped.  If you enable DSRlogout on port 31 and the modems are
configured to drop DSR when CD drops, a user terminating a session between
himself and server1 should:

    (a) cause the modem on server1 to drop CD, which should...

    (b) cause server2's modem to drop CD (and DSR!) which in turn should...

    (c) cause server2 to log out that port (port 31)

If this isn't the behavior you see after enabling DSRlogout on port 31,
it's time to start watching modem signals using either a breakout box or
the MONITOR PORT STATUS command.

Jim
3441.6Wrong cablesKERNEL::FREKESLike a thief in the nightThu Feb 20 1997 02:569
    Jim
    
    Thanks. I had tried that, and it was not working. When you suggested
    that I ,ay need a break-out box, I thought that perhaps the cables, and
    adapters I was using were not correct. Changed those around, and it all
    work fine.
    
    Regards
    	Steven