Specifies the length of time in seconds between
hello packets that the router sends on the specified interface. The no version restores the default value.
Options
seconds—Time (in the range
0–65535 seconds) equal to the hello multiplier times the hello intervalseconds; default value is 10 seconds.
level-1—Sets the hello interval for level 1 independently
level-2—Sets the hello interval for level 2 independently