TCP/IP (Parallel Library) Migration Guide

Migration Considerations
HP NonStop TCP/IP (Parallel Library) Migration Guide—522272-003
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and retained by the new Telserv primary process when the primary Telserv process
dies. However, in Parallel Library TCP/IP with round-robin enabled, the new TCPMON
in the reloaded processor runs an automatic script to relaunch the Telserv process but
the newly created Telserv process does not have knowledge of the previous configured
STATIC service and STATIC window. To use static windows and servers in Telserv in
the Parallel Library TCP/IP environment with round-robin enabled, modify the Telserv
startup script so that it reconfigures the Telserv-related STATIC service and STATIC
window.
In addition, use a command file to start Telserv rather than configuring Telserv as a
persistent process. Again, add commands for adding the static server and static
window to the command file.
There is also a RESILIENT ON attribute for Telserv which allows your session to move
to a different terminal. This feature does not work if round-robin filtering is enabled.
(See Round-Robin Filtering on page 3-12.)
If you are migrating from the NonStop K-series system to the NonStop S-series system
and use multiple TELSERV processes for each controller using ports 23, 2 and 3,
configure Parallel Library TCP/IP to have round-robin enabled. The round-robin feature
of Parallel TCP/IP allows multiple processes to share a port; without round-robin
enabled, you cannot run multiple processes on a single port. For information about
enabling the round-robin feature of Parallel Library TCP/IP, see the TCP/IP (Parallel
Library) Configuration and Management Manual.
Trace
The changes to tracing for Parallel Library TCP/IP are minimal. Because multiple
TCPMONs can run in multiple processors, you might need to do tracing on multiple
processors for some problem analysis.
Tips
•
Do not configure subnets to specific TCPMONs. Instead, use the wild card (*)
when issuing all ADD and ALTER SUBNET commands.
•
Stop all applications before stopping the Parallel Library TCP/IP environment.
•
Use TCPMAN not TCPSAM SCF commands to get a full picture of the Parallel
Library TCP/IP configuration. TCPSAM shows only partial configuration in its own
processor.
•
To obtain a list of all running conventional TCP/IP processes and all running
TCPSAM processes, enter LISTDEV TCPIP. To obtain a list of all TCPMAN and
TCPMON processes, enter LISTDEV PTCPIP.
Note. When you configure the Parallel Library TCP/IP environment with round-robin enabled,
launch the NonStop process pairs in alternative processor pairs. For more information about
round-robin configuration considerations, see the TCP/IP (Parallel Library) Configuration and
Management Manual.