This attribute specifies an upper bound on the cost metric of a route,
which is the sum of the cost metrics of all trunks on the route. The
cost metric is the trunkCost attribute of the Trunk component. If for
any trunk the trunkCost is larger than the maximumAcceptableCost,
then that trunk is not considered during the route selection. While a
shortest route is being selected, the route cost is being compared
with the maximumAcceptableCost attribute, and this is done for any
minimization criterion. No route is selected if the cost metric of the
shortest route is larger than the maximumAcceptableCost.