This attribute specifies the throughput metric value beyond which a
destination RID should be considered unreachable. That is, if a
throughput metric to a RID is equal to or greater than this value
then the RID will be considered to be unreachable in the throughput
class of service.
Lowering this value has the effect of speeding up the detection of
the loss of reachability to a RID. It also reduces the amount of
Routing Table Update (RTU) traffic generated in this scenario.Care
must be taken to ensure that the value chosen is big enough for the
longest throughput path in the network.
This attribute is optional; a default of 245 is used when it is not set.
It is recommended that all nodes in the network be provisioned with
the same cut off value.