Method for communication between network device and terminal device, network device, and terminal device
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United States of America Patent
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Nov 5, 2019
Grant Date -
Jan 11, 2018
app pub date -
Sep 12, 2017
filing date -
Mar 13, 2015
priority date (Note) -
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Abstract
The present disclosure provides a method for communication between a network device and a terminal device, where the network device stores a correspondence between a link-layer address and an IP address that are of the terminal device, and the method includes: obtaining, by the network device, a first link-layer address; determining whether a quantity of IP addresses corresponding to the first link-layer address reaches a threshold; if the quantity reaches the threshold, selecting an IP address from the IP addresses, where a quantity of selected IP addresses is not greater than the maximum quantity; saving a correspondence between the first link-layer address and the selected IP address; and sending, according to the selected IP address, a message to a terminal device having the first link-layer address, where the message is used to notify the terminal device whether an IP address is selected by the network device.
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