METHOD AND NETWORK DEVICE FOR TAKING OVER LOCAL MOBILE ANCHOR IN INVALIDATION

摘要

The present invention provides a method and network device for taking over invalid Local Mobile Anchor (LMA). The method includes: a standby LMA synchronizes agency binding cache information of a Mobile Node (MN); the standby LMA obtains a message that a main LMA is invalid or the network between the main LMA and a Mobile Access Gateway (MAG) is invalid; the standby LMA sends an LMA replacing message to the MAG for taking over the main LMA to be the agent of the MAG service, so as to make the MAG perform binding registration on the standby LMA. The embodiments of the present invention resolve the problem relating to the LMA/MAG reliability by utilizing redundancy mechanism in the scene of Proxy Mobile Internet Protocol (PMIP), thus reducing the loss of the data packets from or to the MN, and improving the network reliability.