| 摘要 |
An access node (e.g., Digital Subscriber Line Access Multiplexer) and a method are described herein that proactively monitor the connectivity of one or more end devices (e.g., residential gateways). In one embodiment, the access node performs the following: (a) receives continuity check messages from at least one of the end devices; (b) polls the received continuity check messages to ascertain the connectivity of each end device; and (c) if at least one continuity check message is detected as missing from one of the end devices during the polling step, then an alarm message is sent indicating a loss of connectivity to the one end device. Thereafter, an edge router (e.g., Broadband Network Gateway) would receive the alarm message and know there is no longer a connection to the one end device.
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