HP OpenVMS Systems

Source for f$getsyi NODE_NUMBER, NODE_AREA?

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The Question is:

 
We use a custom command procedure CONFIGNET.COM to configure DECnet on each
node in our network.  CONFIGNET.COM is the same on each node.  At the top we
use F$GETSYI to get the nodename and address and put them in symbols that
are used later to set variou
s DECnet parameters.
 
Our procedure for changing a nodes name/address is to update MODPARAMS.DAT
(SCSNODE and SCSSYSTEMID), AUTOGEN system system, reboot, run CONFIGNET.COM,
reboot, and all is well.  We follow the standard of SCSSYSTEMID being DECNET
area*1024 + DECNET node nu
mber.
 
There was a recent change to the CONFIGNET.COM that changed the F$GETSYI
calls using different 'items' as arguments.  I do not know where these
'items' are derived from so I don't know what effect that will have on the
procedure above.
 
Old:
 
$ ID = %X'F$GETSYI("NODE_SYSTEMID")'
$ AREA = ID / 1024
$ NODE_NUMBER = ID - (AREA * 1024)
$ ADDRESS := 'AREA'"."'NODE_NUMBER'
$ NODE = F$GETSYI("NODENAME")
 
New:
 
$  NODE         = F$GETSYI("NODENAME")
$  NODE_NUMBER  = F$GETSYI("NODE_NUMBER")
$  AREA         = F$GETSYI("NODE_AREA")
$  ADDRESS     := 'AREA'"."'NODE_NUMBER'
 
Where do NODE_NUMBER and NODE_AREA come from? DECNET parameters? Derived
from SYSGEN parameters?
 
Thanks
 
 

The Answer is :

 
  The DECnet node address sys$getyi/f$getsyi itemcodes are derived from
  the contents of the SCSSYSTEMID SYSGEN parameter, based on the formula
  SCSSYSTEMID = (decnet_node_area * 1024) + decnet_node_number)

  

     

     
answer written or last revised on ( 10-FEB-1999 )
     
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