Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019 
<== Date ==> <== Thread ==>

Subject: single IOC on Linux with two ports
From: Hovanes Egiyan <hovanes.egiyan@gmail.com>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Tue, 16 Jul 2013 10:41:57 -0400
Dear EPICS experts,

I would like to run one EPICS IOC on a Linux system configured with two Ethernet interfaces connected to
two different networks. But I would like the IOC to respond to the requests to only one of the interfaces,
and send the data using the same interface. Basically, I would like EPICS IOC not to interfere with
the main traffic going through the other Ethernet port. Can this be done? I know it can be done using a virtual
machine, but I would like to avoid doing it and consuming extra resources since these are VME CPUs.

I tried running an IOC that I built using R3-14-12-3, and when I set EPICS_CAS_INTF_ADDR_LIST
the IOC still responds to the requests sent to any of the two interfaces. Actually, the CA manual page says that
"In R3.14 and previous releases the CA server employed by iocCore does not implement this feature."
Is this feature going to be implemented for IOCs in the near-future releases (3-15 for instance)? And another
question is if eventually the IOC only responds to the requests addressed to only one of its interfaces, will it
also transmit the data using that interface or the data will be routed considering both Ethernet interfaces?

Hovanes Egiyan.



Replies:
Re: single IOC on Linux with two ports Andrew Johnson
RE: single IOC on Linux with two ports Hill, Jeff

Navigate by Date:
Prev: RE: asyn+streamDevice hangs with synchronousLock:Yes Mark Rivers
Next: mbbxDirect SHFT field Florian Feldbauer
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019 
Navigate by Thread:
Prev: Re: EPICS fsmRecord question Jiro Fujita
Next: Re: single IOC on Linux with two ports Andrew Johnson
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019 
ANJ, 20 Apr 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·