Experimental Physics and
Industrial Control System

"Perry L. Anthony" <[email protected]> · Wed, 20 Nov 1996 11:15:24 -0800 (PST)

We have the following situation.  The accelerator has a Controls Subnet 
and the experiment has a their own Subnet.  We would like to pass 
information between these two subnets, while keeping them seperate.  We 
envision having an IOC (MVME167) with either two e-net interfaces, or 
connected to a router (probably something like a Catalyst 1200 Switch) 
configured to allow the Controls Subnet to access the IOC (epics channel 
access) and to allow the Experiment Subnet to access the IOC, but prevent 
direct communication between the two subnets (to keep experiment traffic 
off the controls subnet).  Does anyone have any experience configuring a 
VxWorks/EPICS IOC as multi-homed (having two interfaces)?  I heard rumors 
some time ago that this might be difficult, but this information might be 
out of date or incorrect.  My experience with UNIX OS's is that 
sometimes it is easy (no problems with motorola's SYSV OS and others) and 
sometimes extremely difficult (IBM's AIX 3.x.x).  How does one configure 
VxWorks/EPICS for two e-net interfaces?  Thanks, Perry

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System