HP 3000 Manuals

How to Access Multisessions [ Configuring Systems for Terminals, Printers, and Other Serial Devices ] MPE/iX 5.5 Documentation


Configuring Systems for Terminals, Printers, and Other Serial Devices

How to Access Multisessions 

Multisession is the ability to have a device on a DTC simultaneously
associated with multiple sessions, jobs, or processes on one or more
hosts.

Each port can support up to 5 connections and connections can only be
active one at a time; the other connections are in a "hold" state.  The
connection establishment method (Session or Programmatic, that is, FOPEN)
for multiple connections associated with a particular port is determined
by the first established connection.  If this is a session then the other
multisession connections to that port must be session.  Similarly, if the
first connection is established through the use of a programmatic
process, the other multisession connections must be established through
the use of a programmatic process.

Multisession is only available in a PC-based network environment (that
is, when the DTCs are managed by an OpenView Windows Workstation on the
LAN).

Multisession is supported on switched ports only and some restrictions
apply to nailed devices.  See the list below:

   *   Switched Ports:  Multisession is supported only for switched
       ports.

   *   Non Switched Ports:  The DTC User Interface is not accessible to
       non switched ports.  For Multisession to establish another
       connection it needs the DTC User Interface.

   *   Nailed LDEV: If a switched port is configured as a nailed LDEV on
       a system, then multiple sessions from that port to that system are
       not possible because the port can have only the one connection
       associated with the assigned LDEV on the host system.  Although
       multiple sessions to that particular host are not possible, it is
       possible to establish multiple sessions from that switched port to
       other systems.

   *   Non Nailed LDEV: If a switched port is configured as a non nailed
       LDEV on a system, then multiple sessions from that port to that
       system are supported in addition to multiple sessions to multiple
       systems.



MPE/iX 5.5 Documentation