OSPF Fast Hello
Open Shortest Path First (OSPF) fast hello provides a way to send a set number of hello packets per second and use a dead interval of four hellos. Fast hello can be configured on an OSPF interface through the CLI. If dead-interval is set to 1 second, fast hello will be enabled. The hello-multiplier value, which can be between 4 and 10, sets the number of hello packets that will be sent per second.
Syntax
config ospf-interface
edit ospf1
set interface port1
set network-type broadcast
set dead-interval 1
set hello-multiplier 4
end
end