Topic: SSP controllers periodically losing network connection and going offline
Applies to: SSP Controllers (All Mercury EP Series)
Summary: Mercury discovered that gratuitous ARP requests are causing connection issues for some SSP controllers (Mercury EP series controllers). Updating the controller’s firmware to version 1.274 corrects the issue and only sends ARP request if the controller detects a change in the Ethernet link state.
Resolution: Update the firmware in the SSP Controller with version 1.274. Download the full Technical Bulletin for instructions on how to download firmware to controllers.
Download Technical Bulletin (PDF):