Experimental Physics and
Industrial Control System

Dohn Arms <[email protected]> · Wed, 2 Jul 2014 11:34:00 -0500

Hello,

I've actually been working and using something along those lines, but

with a custom heartbeat protocol, needing an external heartbeat-watching

program. I'm close to making an official release of my "alive" module.

It's in the synApps development SVN at

https://subversion.xray.aps.anl.gov/synApps/alive/trunk/
The main documentation is at
https://subversion.xray.aps.anl.gov/synApps/alive/trunk/documentation/aliveDoc.html

The record sends a heartbeat along with some other information, and the

record also opens a TCP port (restricted to the daemon) that allows

receiving static information about the IOC, being specified environment

variables and things like bootline (for vxWorks) or userid/groupid

information (for Linux and Darwin).

There is no included daemon to receive the traffic, but the protocol is

explicitly described in the HTML documentation. I plan to release the

daemon I am using as an example, but as it's heavily slanted to how our

group is using it, I did not want to make it the "officially" supported

version. Right now, we are monitoring heartbeats from around 100 APS

beamline IOCs using this.

Vxworks, Linux, and Darwin IOCs are currently supported. I have had

some issues with building under Windows, so that's not supported yet.

Dohn

On 07/02/2014 11:09 AM, J. Lewis Muir wrote:

On 7/2/14, 10:58 AM, Phillip Sorensen wrote:

Hello all,

Does anyone out there have device support for issuing a ping to a
network device or a block of network devices.

Hi, Phil.

Why do you want this?

If you're trying to monitor whether a network device is up, there may
be some solutions out there, but they may or may not use an actual ICMP
echo request.  See this Tech-Talk thread:

   http://www.aps.anl.gov/epics/tech-talk/2014/msg00324.php

Lewis

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System