Hi In the Config file defaults, we can find : #define DEFAULT_HELLO_TIMER 5 /* Period between HELLO messages */ #define DEFAULT_DEADNODE_TIMER 21 /* If we don't get a message from a #define DEFAULT_MAX_RETRIES 5 /* Number of times we resend a message */ That seems to mean that the node sends a Hello message on heart-beat interface every 5s, waits at max 21s before retry and this 5 times, and if at 5th time , it has no response in the 21s period , it decides to kill the other node. Am I right ? Besides, could you explain for me the JOINREQ, JOINACK, and JOINCONF notions ? Thanks Alain -- mailto:Alain.Moulle@xxxxxxxx +------------------------------+--------------------------------+ | Alain Moullé | from France : 04 76 29 75 99 | | | FAX number : 04 76 29 72 49 | | Bull SA | | | 1, Rue de Provence | Adr : FREC B1-041 | | B.P. 208 | | | 38432 Echirolles - CEDEX | Email: Alain.Moulle@xxxxxxxx | | France | BCOM : 229 7599 | +-------------------------------+-------------------------------+ -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster