Method of sending address correspondence in a second layer protocol of applying link state routing

A method of updating Medium Access Control (MAC) table in a data link layer protocol that utilizes link state routing, comprising:

• closing MAC address learning function of a network side;
• receiving an address correspondence advertisement message, wherein encapsulation information of the address correspondence advertisement message comprises a device identification of a network node which encapsulates the address correspondence advertisement message;
• obtaining first address correspondence information according to the address correspondence advertisement message, wherein the first address correspondence information comprises a correspondence between a MAC address of a terminal device which sends the address correspondence advertisement message, an Internet Protocol (IP) address of the terminal device which sends the address correspondence advertisement message and a device identification in the address correspondence advertisement message;
• adding the first address correspondence information to an address correspondence information table, when the IP address in the first address correspondence information is different from an IP address in any piece of address correspondence information in the address correspondence information table;
• receiving an address correspondence information request message on a local link;
• and
• generating, when a target address in the address correspondence information request message an IP address in a piece of existing address correspondence information in the address correspondence information table, an address correspondence information response message corresponding to the existing address correspondence information, sending the address correspondence information response message corresponding to the existing address correspondence information to a terminal device which sends the address correspondence information request message, and updating a MAC table according to the existing address correspondence information.

An apparatus configured to communicate address correspondence information in a data link layer protocol that utilizes link state routing, comprising:

• a receiving unit for a network node configured to receive an address correspondence advertisement message on a local link;
• an obtaining unit configured to obtain first address correspondence information according to the address correspondence advertisement message, wherein the first address correspondence information comprises a correspondence between a Medium Access Control (MAC) address of a terminal device which sends the address correspondence advertisement message, an Internet Protocol (IP) address of the terminal device which sends the address correspondence advertisement message and a device identification of the network node;
• a recording unit configured to record the first address correspondence information in an address correspondence information table when the first address correspondence information is not in the address correspondence information table;
• and
• a sending unit configured to send the first address correspondence information to other network nodes through a first message of control plane, wherein the first message of control plane controls the other network nodes to record the first address correspondence information in their address correspondence information tables;
• the receiving unit further configured to receive an address correspondence information request message on the local link;
• and
• the recording unit further configured to generate, when a target address in the address correspondence information request message matches an IP address in a piece of existing address correspondence information in the address correspondence information table, an address correspondence information response message corresponding to the existing address correspondence information, send the address correspondence information response message corresponding to the existing address correspondence information to a terminal device which sends the address correspondence information request message, and update a MAC table according to the existing address correspondence information.

An apparatus for updating of a Medium Access Control, MAC, table in a data link layer protocol that utilizes link state routing, wherein MAC address learning function of a network side of the apparatus is in a closing state, and the apparatus comprises:

• a first receiving unit configured to receive an address correspondence advertisement message, wherein encapsulation information of the address correspondence advertisement message comprises a device identification of a network node which encapsulates the address correspondence advertisement message;
• an obtaining unit configured to obtain first address correspondence information according to the address correspondence advertisement message, wherein the first address correspondence information comprises a correspondence between a MAC address of a terminal device which sends the address correspondence advertisement message, an Internet Protocol, IP, address of the terminal device which sends the address correspondence advertisement message and a device identification in the address correspondence advertisement message;
• an adding unit configured to add the first address correspondence information to an address correspondence information table, when the IP address in the first address correspondence information is different from an IP address in any piece of address correspondence information in the address correspondence information table;
• a second receiving unit configured to receive an address correspondence information request message on a local link;
• and
• a generating unit configured to generate, when a target address in the address correspondence information request message matches an IP address in a piece of existing address correspondence information in the address correspondence information table, an address correspondence information response message corresponding to the existing address correspondence information, sendthe address correspondence information response message corresponding to the existing address correspondence information to a terminal device which sends the address correspondence information request message, and update a MAC table according to the existing address correspondence information.