Specifies the maximum amount of time, in seconds,
that the restarting router waits before setting the overload bit to
indicate that the LSP database has not been synchronized and the IS-IS
graceful restart operation has failed. The no version restores the default T3 wait time, 30 seconds.
manual—Sets the T3 wait time manually to the specified
number of seconds
seconds—Maximum wait time,
in the range 5–120 seconds, before the restarting router sets
the overload bit; default value is 30 seconds
adjacency—Specifies that the restarting router should
obtain its T3 wait time from neighboring IS-IS routers that have active
adjacencies to this router. This option sets the wait time to the
minimum of the remaining times specified in the restart TLVs contained
in the hello packets that the router receives from its neighbors.