https://docs.paloaltonetworks.com/prisma-sd-wan/administration/prisma-sd-wan-sites-and-devices/prisma-sd-wan-ports-and-interfaces/configure-vpn-keep-alives-for-circuit-categories
VPN Keep-Alives
VPN keep-alive packets determine whether a given path is reachable for an Prisma SD-WAN. You can configure VPN Keep-Alives for circuit categories, circuits,...
vpnkeep