Compaq AA-Q88CE-TE Network Protocol Selection on OpenVMS, Running RTR as a Service on Windows NT

Starting and Setting Up RTR

2.10 Network Protocol Selection on OpenVMS

2.10Network Protocol Selection on OpenVMS

•The default network transport protocol on OpenVMS is DECnet. You may change the default to TCP/IP by removing this line from RTR$STARTUP.COM:

$ DEFINE/SYSTEM RTR_PREF_PROT RTR_DNA_FIRST

If you are using TCP/IP, you will need to use the node-name prefix ``dna.'' if you specifically want DECnet transport to be used. This is required, for example, when connecting to Version 2.2D ECO6 nodes as described in Section 2.9.3 of these Notes, and Section 2.7 of the System Manager's Manual.

If you are using DECnet as the default, you will need to use the node-name prefix ``tcp.'' to connect to other nodes using TCP/IP transport.

If the value of the logical RTR_PREF_PROT is changed, the new value takes effect only after RTR has been restarted.

•Reliable Transaction Router Version 3.2 for OpenVMS can use either Compaq TCP/IP Services for OpenVMS or TCPware Version 5.1 as the TCP/IP transport layer.

2.11Running RTR as a Service on Windows NT

Once the RTR as Service has been installed (see Installation Guide), RTR may be started or stopped from the Control Panel / Services panel using the START and STOP buttons provided.

•To start RTR: Press the START button.

•To stop RTR: Press the STOP button.

Note

Pressing START and STOP or the reverse in quick succession (within five or so seconds, depending on the speed of your computer) may cause undesirable results. This is because the Service executes quickly, making available the other action button, but the requested RTR action may not have completed when the second action button is pressed. It is therefore possible, for example, that the STOP action may be blocked by an incomplete START action. Although the Service will claim to be STOPped, RTR may in fact remain started. Pressing whichever action button is functioning should repair the problem.

By default, RTR will not restart automatically at system reboot time. You can change this by setting the Control Panel / Services entry for RTR.

Occasionally, an RTR process may continue to run after STOP has been pressed, and subsequent START and STOP actions may have no effect or produce an error. Under these circumstances, it will be necessary to intervene directly, as a privileged (SYSTEM) user, to stop RTR. This can be done either using RTR commands or with the Task Manager, or by rebooting.

2–16Starting and Setting Up RTR