| 摘要 |
The embodiment of the present invention provides a ring network access monitoring method, an access device and a network system. The method includes: monitoring a client-side port of each user; transmitting a first broadcast Ethernet frame to each user device via each client-side port of the access device; if the first Ethernet frame broadcast is received, then confirming the existence of a ring network on the client-side port of the user device receiving the first broadcast Ethernet frame. According to the embodiment, the technical solution shows transmission of the broadcast Ethernet frame via an access device. The broadcast Ethernet frame is received by the access device in the ring network if there is a ring network within the access network. Thus, when the access device monitors the broadcast Ethernet frame, the existence of the ring network in the receiving network can be determined.
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