HP Integrity Virtual Machines 4.2: Installation, Configuration, and Administration

of the HEARTBEAT_INTERVAL parameter is entered in microseconds; the default value
is 1,000,000 microseconds. Setting the value of this parameter to less than the default is
not recommended. The default should be used where possible. The maximum value
recommended is 15 seconds, and the maximum value supported is 30 seconds. This
value should be at least half the value of the NODE_TIMEOUT parameter.
— The NODE_TIMEOUT parameter specifies the amount of time after which the Serviceguard
node can determine that the other node is unavailable and can initiate cluster
reformation. This parameter is entered in microseconds; the default value is 2,000,000.The
minimum is two times the value of the HEARTBEAT_INTERVAL parameter. The
maximum recommended value for this parameter is 30,000,000. The default setting
yields the fastest cluster reformations. However, using the default value increases the
potential for spurious reformations because of momentary system hangs or network-load
spikes. For many installations, a setting of 5,000,000 to 8,000,000 (5 to 8 seconds) is more
appropriate. The maximum value recommended is 30 seconds and the maximum value
supported is 60 seconds.
11.6 Troubleshooting Network Problems When Using Serviceguard 207