Experimental Physics and
Industrial Control System

Ø  Do you have any clue what the issue might be?

 

Which server is in use?

o portable server library, standalone from an IOC (PCAS)

o original server, embedded in an IOC (rsrv)

 

The PCAS is more flexible in its configuration for which network interfaces it will receive connection request from (details are in the ca reference manual), but the rsrv server has a fixed configuration always receiving connection requests from all interfaces.

 

Also, whether a search broadcast sent out by clients over one of the local network interfaces will be seen by servers on the local host or not is part of the routing/loopback policy for the local os.

 

Furthermore, the ca client library typically sends search messages to the broadcast addresses of each LAN that is attached by default, but this can be changed with configuration (see the ca reference manual). By default, the client library builds its search address list by interrogating the network interfaces (see the code in libCom/osi/osd/default/osdNetIntf.c).

 

Jeff