Experimental Physics and
Industrial Control System

> Would it be backward compatible for older CA clients/servers trying to
> connect the single-host multiple IOCs?

With multicast clients would send search messages to a special 
ip address. That could be manually configured with 
EPICS_CA_ADDR_LIST, but we could easily also allow the distribution
to be configured so that sending to the broadcast addresses, 
multicast address, name server, no particular address is the 
default. We could probably also allow a default configuration, set 
in the distribution, which sends to more than one of the above.

Jeff
______________________________________________________
Jeffrey O. Hill           Email        [email protected]
LANL MS H820              Voice        505 665 1831
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Message content: TSPA


> -----Original Message-----
> From: Matthieu Bec [mailto:[email protected]]
> Sent: Friday, September 24, 2010 11:01 AM
> To: Jeff Hill
> Cc: [email protected]
> Subject: Re: Soft IOCs and Port Numbers
> 
> On 09/24/10 08:33, Jeff Hill wrote:
> >
> >> We are wondering here, how to host multiple soft
> >> IOCs on the same computer, possibly
> >> sharing the same UDP CA request port.
> >
> > It is a simple matter to add multicast support to the
> > ca server, and that will address this issue.
> 
> Of the different options I heard, it seems most transparent.
> Would it be backward compatible for older CA clients/servers trying to
> connect the single-host multiple IOCs?
> 
> Matthieu
> 
> --
> Matthieu Bec              Gemini Observatory
> Tel: +56 51 205785        c/o AURA, Casilla 603
> Fax: +56 51 205650        La Serena, Chile

References:

Soft IOCs and Port Numbers Pam Gurd

RE: Soft IOCs and Port Numbers matthew.pearson

RE: Soft IOCs and Port Numbers Anze Zagar

RE: Soft IOCs and Port Numbers Jeff Hill

Re: Soft IOCs and Port Numbers Matthieu Bec

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