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

Subject: RE: EPICS Config for 2 Ethernet Adapters
From: "Jeff Hill" <[email protected]>
To: "'Andrew Johnson'" <[email protected]>, <[email protected]>
Date: Tue, 15 Feb 2011 09:46:01 -0700
> Actually that variable has no effect on the IOC server, it only applies to
> the CAS which is not (yet) used by the IOC code.

The R3.15 CA server will support this functionality (in the IOC).

Jeff
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Jeffrey O. Hill           Email        [email protected]
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Message content: TSPA

With sufficient thrust, pigs fly just fine. However, this is
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are going to land, and it could be dangerous sitting under them
as they fly overhead. -- RFC 1925


> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of Andrew Johnson
> Sent: Tuesday, February 15, 2011 9:08 AM
> To: [email protected]
> Subject: Re: EPICS Config for 2 Ethernet Adapters
> 
> On Tuesday 15 February 2011 09:52:37 Paul Sichta wrote:
> > Look in the CA Reference Manual for your release of EPICS.  I think
> > you need to specify EPICS_CAS_INTF_ADDR_LIST .
> 
> Actually that variable has no effect on the IOC server, it only applies to
> the
> CAS which is not (yet) used by the IOC code.
> 
> > On Tue, Feb 15, 2011 at 10:33,  <[email protected]> wrote:
> > > I now need to take the legacy data from one network and make available
> on
> > > another network via EPICS.  I have a Linux PC with 2 ethernet
> adapters,
> > > eth0 the legacy control system, eth1 the EPICS control system.  The
> IOC
> > > runs on this machine except I cannot see the EPICS PVs via other
> machines
> > > on the eth1 network.
> > >
> > > I'm guessing that the EPICS IOC is binding to eth0 by default and
> > > expecting to serve data to this network?
> > >
> > > How do I configure EPICS to bind to eth1 rather than to eth0, is this
> > > possible?
> 
> The IOC server binds to all the interfaces it can see; there's actually no
> way
> to change that with the current code.  I wonder whether your problem is
> actually that the machines do not have the same subnet mask settings, and
> hence their broadcast addresses are different?  On Unix systems 'ifconfig
> -a'
> will print the broadcast address; you need to make sure that all systems
> are
> using the same address.
> 
> The output from running 'casr 1' from the IOC shell may also give some
> hints.
> 
> - Andrew
> --
> If a man is offered a fact which goes against his instincts, he will
> scrutinize it closely, and unless the evidence is overwhelming, he will
> refuse to believe it.  If, on the other hand, he is offered something
> which affords a reason for acting in accordance to his instincts, he
> will accept it even on the slightest evidence.  -- Bertrand Russell



References:
EPICS Config for 2 Ethernet Adapters graham.cox
Re: EPICS Config for 2 Ethernet Adapters Paul Sichta
Re: EPICS Config for 2 Ethernet Adapters Andrew Johnson

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