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Network Data Corruptions?

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The Question is:

 
We have an OpenVMS Cluster comprised of 4 ALPHA DS20 nodes managing a  number
 of applications based on DSM. We recently upgraded three of our nodes from
 V7.1-2 of VMS to VMS V7.3, the fourth ALPHA remains at V7.1-2 but is due to be
 upgraded shortly.
 
We have recently encountered a situation where VMS LAT print queues and
 automated FTP transfer programs (written in DCL) are receiving data that
 should have come out elsewhere. I.E. one LAT device is printing data that
 should have come out on a different
LAT printer, or a file captured by an FTP routine contains data that should
 have been destined for a printer queue.
 
Any idea what could be causing this to happen ?

The Answer is :

 
  Please apply the available mandatory ECOs for OpenVMS, and any ECOs
  associated with LAT, and any network device driver ECOs.  Please
  also decide to either use XFC caching and to then install the XFC V2.0
  or later ECO, or please select VIOC caching via setting the VCC_FLAGS
  parameter to one.

  
     
     answer written or last revised on ( 17-DEC-2003 )
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