KR900011181A - Data Link State Management Method in Layer 3 of Access Network between Subscriber Networks - Google Patents

Abstract

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Description

Data Link State Management Method in Layer 3 of Access Network between Subscriber Networks

As this is a public information case, the full text was not included.

2 is a block diagram of a system in which the method according to the present invention is performed, FIG. 3 is a flowchart according to the present invention, and FIG. 4 is a link state table according to the present invention.

Claims (1)

In the method of managing data link state at Layer 3 of an access device between subscriber networks, when receiving a link formation message of a subscriber in an initial data link non-established state, a data link is established at layer 2 and a data link is configured at layer 2 so that the data link is a physical connection. In the first step of requesting the data link setting upon inputting the completion message, and storing the state data indicating that the data link is in the setting waiting state, and transitioning to the data link setting waiting state, A second step of transitioning to a data link setting state after storing the state data indicating that the data link state is a data link setting state by using the function and service provided in the layer 2 in a predetermined buffer; Data link setup complete from Layer 2 while waiting for data link setup A third step of using the functions and services provided by the layer 2 when the message is input, storing the state data indicating that the data link state is the data link setting state in a predetermined buffer, and then transitioning to the data link setting state; When receiving the data link release message from the subscriber in the data set link standby state of the first step, request data release to the layer 2 so as to select a data link to be released at the layer 2, and confirm physical release of the data link from the layer 2 Storing the state data indicating that the data link is not set in a predetermined buffer and transitioning to the data link not set state; and receiving a link release message of the subscriber in the data link states of the second and third steps. Select the data link to be released on layer 2 and data ring to layer 2 so that the data link is physically released A fifth step of requesting the release of the link and storing the state data indicating that the data link is in the wait for release, and transitioning to the wait state for the data link release, and receiving the subscriber's data link establishment message in the wait for the data link establishment. A sixth step of establishing a data link at layer 2, requesting the data link set up at layer 2 so that the data link is physically connected, and storing state data indicating that the data link is in a waiting state for setting, and then transitioning to the data link waiting state. And in the data link release completion state after the fifth step, release the function and service of the data link layer from the data link release completion message means from the layer 2, the layer 3 disables the link, and the corresponding data link is not set. Save the status data indicating to a buffer A seventh step of transitioning to a state; and an eighth step of executing the same process as the release of the seventh step when the data link release completion message is input from the layer 2 in the data link establishment state of the third step. . ※ Note: The disclosure is based on the initial application.