Patent ID: 8332513
Filing Date: 2012-12-11
Classification: H04L

Abstract:
1. A method for detecting whether a connectivity between a subscriber terminal and an access node is terminated in an IPv6 access network, said IPv6 access network having said access node and at least one said subscriber terminal, said access node storing a neighbor cache list, the method comprising: creating an entry of a subscriber connectivity cache list corresponding to a subscriber terminal in an access node when connectivity between the subscriber terminal and the access node is established successfully; querying an entry of a neighbor cache list corresponding to the subscriber terminal based on a polling time set in the entry of the subscriber connectivity cache list, the polling time being based on entry information in the subscriber connectivity cache list and entry information in the neighbor cache list, the subscriber connectivity cache list including a subscriber state that identifies the state of the subscriber terminal, the neighbor cache list including a neighbor state that identifies whether the subscriber terminal is reachable; deciding whether the connectivity is desired based on the entry information corresponding to the subscriber terminal of the subscriber connectivity cache list and neighbor cache list, the entry information of the neighbor cache list identifying at least if the subscriber terminal is reachable; performing termination processing on the connectivity of the subscriber terminal based on the neighbor cache list and the subscriber connectivity cache list when logging off abnormally; and deleting the created entry of the subscriber connectivity cache list when logging off abnormally.