A system that incorporates teachings of the subject disclosure may include an access segment of a mobility network in which routers receive network traffic data from base transceiver stations, forward the network traffic data by way of aggregation routers, originate probe packets directed to a targeted one of the base transceiver station and the aggregation router to determine, by way of an expected reply to each probe packet, reachability of the targeted one of the base transceiver station or the aggregation router. A change from reachability to unreachability of the targeted one of the base transceiver station or the aggregation router is determined to be an indication of service impacted outage. Determined service impacted outages are logged. Reliability metrics, such as average uptime, are computed from reachability status to quantify the impact of service level outages perceptible by the mobile communication devices. Other embodiments are disclosed.