Argonne National Laboratory

Experimental Physics and
Industrial Control System

NAMESERVER: Channel Access Nameserver

The CA Nameserver is used to provide IP addresses of EPICS process variables (PVs) to Channel Access client programs. Without a nameserver, CA clients broadcast searches for PVs adding to the load of every IOC in the system. With the nameserver in use, broadcasts can be directed only to the nameserver, decreasing the load on the IOCs.


The following documents are available. Textual links are to HTML or text documents, other formats are indicated by an icon link.

Software Download

The following tar files contain source code only (no binaries), and were compressed using gnuzip.

Required Software

The CA nameserver uses GNU-style regular expressions.

To use the header files and libraries from the GNU regex library, it is necessary that it be downloaded and built first.

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