PAPOLLINTERVAL is a system parameter that specifies, in seconds, the polling interval the CI port driver uses to poll for a newly booted computer, a broken port-to-port virtual circuit, or a failed remote computer. This parameter trades polling overhead against quick response to virtual circuit failures. VSI recommends that you use the default value for this parameter. VSI recommends that you set this parameter to the same value on each cluster computer. PAPOLLINTERVAL is a DYNAMIC parameter.