Configuring the communication intervals

Last published : Sep 22, 2026
The hello interval is the interval at which the heartbeat messages are sent to the peer node. The dead interval is the time interval after which the peer node is marked DOWN if heartbeat packets are not received. The heartbeat messages are UDP packets sent to port 3003 of the other node in an HA pair. The dead interval must be set as a multiple of the hello interval. By default, the hello interval is set to 200 milliseconds and the dead interval is set to 3 seconds.
Related information

To set the hello and dead intervals by using the command line interface

At the command prompt, type:
  • set HA node [-helloInterval <msecs>] [-deadInterval <secs>]
  • show HA node <id>

To set the hello and dead intervals by using the GUI

  1. Navigate to System > High Availability and, on the Nodes tab, open the node.
  2. Set the following parameters:
    • Hello Interval (msecs)
    • Dead Interval (secs)