FNDSM processes going down intermittently due to error 'Unsuccessful in ping of node '

Customer Problem Description --------------------------------------------------- Problem Summary --------------------------------------------------- FNDSM processes down due to error 'Unsuccessful in ping of node ' Problem Description --------------------------------------------------- Hi, We have 5 application nodes of which CM is running dedicatedly on node 1 and rest are secondary nodes. We are encountering situations where FNDSM processes on secondary nodes are going down with below error: *** ERROR Unsuccessful in ping of node ALP-HSO-EBA04, error reported: Node Timed Out. Internal Concurrent Manager found node ALP-HSO-EBA04 to be down. Adding it to the list of unavailable nodes Unsuccessful in ping of node DLP-HSO-DB02, error reported: Node Timed Out. Internal Concurrent Manager found node DLP-HSO-DB02 to be down. Adding it to the list of unavailable nodes.