Patent ID: 11902183
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An access controller comprising:
a non-transitory computer-readable storage medium configured to store programming instructions; and
a processor coupled to the non-transitory computer-readable storage medium and configured to execute the programming instructions to cause the access controller to:
receive, from an access node, a first message comprising a first identifier, wherein the first identifier comprises a tunnel identifier, a medium access control (MAC) address of the access node, or an Internet Protocol (IP) address of the access node;
obtain, based on the first identifier, a second message comprising a line identifier corresponding to the first identifier;
send, to a relay server, the second message;
receive, from the relay server, a fourth message comprising the line identifier and an IP address prefix;
obtain, based on the line identifier, a third message comprising the IP address prefix and the first identifier; and
send, to the access node, the third message.