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<== Date ==> <== Thread ==>

Subject: Multiple Networks
From: Andrew Johnson <anj@mail.ast.cam.ac.uk>
Date: Tue, 13 Dec 1994 09:56:05 GMT
Does anyone have experience of running EPICS on IOCs which use more than one 
network interface?

For the Gemini 8m Telescopes it is intended that there will be multiple networks 
available, for different types of data.  Control information will use Ethernet, 
but some parts of the system will be generating and transferring large amounts 
of image data.  The intention is for these and other large data items to be sent 
over an FDDI, thus avoiding putting any significant load and hence delays on the 
control LAN which needs to provide a real-time response.

Does anyone have any experience of this kind of approach?  What must be thought 
about in the detailed system design?  I know that vxWorks will work with 2 nets; 
will EPICS?

- Andrew

          ,_}\_.        Andrew Johnson, Technology Division
         /      \       Royal Greenwich Observatory
~~~~~~~~| ,--/;. )~~~~  Madingley Road, Cambridge, UK
    .,  |/  (/  U       Phone: +44 (0)1223 374823
  .`., /_\ . .          Email: anj@mail.ast.cam.ac.uk
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