HP 3000 Manuals

HP ALLBASE/SQL PC API User's Guide

Server Connection Assurance Timeout 

When the connected PC client application abnormally aborts, connection 
assurance parameters, set under MPE/iX, determine the length of time that
the server takes to time out the connection.  Because you cannot
reconnect to the server until the connection has timed out, it is
important that these parameters are set properly.

If you are using HP ARPA Services 2.1 or HP Network Services 2.1 on the
PC client, your network administrator should verify that the the settings
for Connection Assurance Interval and Maximum Connection Assurance
Retransmissions parameters are set appropriately.

The Connection Assurance Interval specifies the amount of time between
each polling event.  The default value is 600 seconds.

The Maximum Connection Assurance Retransmissions specifies the number of
retries the server is polled after a PC client abort has been detected by
the polling event.  The default value is four times.

Figure Figure 3-1  illustrates the use of the network assurance
parameters using the default rate.


          Figure 3-1.  Connection Assurance Parameters 

After the connection abort, the server polls the connection five times
(the polling event plus four retries).  The connection times out after 4
ten minute intervals plus the amount of time between the polling event
and the first retry after the connection aborted.

To change the network assurance parameters, you must bring the network
down.  The sequence of commands used to set network assurance parameters
are as follows:

     :HELLO MANAGER.SYS 
     :NMMGR 

Next, press the function keys in the sequence shown in the following
example (these function key labels are for MPE/iX 4.0):

     F1 Open Config
     F2 NS
     F2 Unguided Config
     F1 Go To Netxport
     F2 Go To GPROT
     F2 Go To TCP
     :
     Modify values for Connection Assurance Interval (e.g. 60) 
     and Maximum Connection Assurance Retransmissions (e.g. 2). 
     :
     F6 Save Data


NOTE  Connection assurance parameter values control polling times on all
      active server LAN connections (not just PC API connections).  More
      frequent polling uses more server CPU time and increases LAN
      traffic.

MPE/iX 5.0 Documentation