US 12,413,551 B2
Methodology to expedite VLAN scanning
Chi Thanh Hoang, Brossard (CA); and Aiqun Sun, Nepean (CA)
Assigned to Mavenir Systems, Inc., Richardson, TX (US)
Filed by Mavenir Systems, Inc., Richardson, TX (US)
Filed on Aug. 17, 2023, as Appl. No. 18/451,469.
Claims priority of provisional application 63/401,348, filed on Aug. 26, 2022.
Prior Publication US 2024/0073181 A1, Feb. 29, 2024
Int. Cl. H04L 61/5014 (2022.01); H04L 12/46 (2006.01)
CPC H04L 61/5014 (2022.05) [H04L 12/4641 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optimized method for expediting Virtual Local Area Network (VLAN) scanning process for discovery of the Management Plane (M-Plane) Dynamic Host Configuration Protocol (DHCP) server within an Open Radio Access Network (O-RAN) system, the method comprising:
transmitting, by using a software tool executed by a processor, VLAN ethernet trunk frames including VLAN Identifier (ID) 1 to VLAN ID 4095, to an ethernet interface of a radio unit (RU) within the O-RAN system, wherein said ethernet interface of the RU is connected via an ethernet switch to a distributed unit (DU) within the O-RAN system, wherein the DHCP server is located at the DU;
selectively forwarding, by the ethernet switch to the DU, only a VLAN ethernet trunk frame having a specified VLAN ID value X among the VLAN ID values 1 to 4095, wherein X is predefined by operator of the O-RAN system;
selectively responding, by the DU, in response to receiving the VLAN ethernet trunk frame having the specified VLAN ID value X, by sending a DHCP response message to the RU; and
identifying, by the RU from the DHCP response message, the specified VLAN ID value X corresponding to the DHCP server.