Experimental Physics and
Industrial Control System

Michael Davidsaver <[email protected]> · Fri, 5 Aug 2016 13:38:19 -0400

On 08/05/2016 11:23 AM, Benjamin Franksen wrote:
> Now, if we change the IP address on the windows PC to another free
> address in the network, channel access first works. Everything is fine
> but only for 3 to 5 minutes. Then connections to the vxWorks IOC fail
> again. Setting the IP address to a third variant has the same effect.
> Everything works but only for a few minutes. Setting the IP address back
> to the original one still doesn't work. Deactivating and  re-activating
> the network interface doesn't help. After a while, maybe  15 to 30
> minutes, an IP address that didn't work and wasn't used for that time,
> can be used again, but still, only for 2 to 3 minutes.

What is the network topology like?  This behavior sounds like some
security system is blocking IPs based on "suspicious" traffic.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System