Haifeng Qu

Title: Haifeng Qu and Ethernet Virtual Private Network Innovations.

Introduction

Haifeng Qu is an inventor based in Beijing, China, whose patent work focuses on Ethernet virtual private network (EVPN) technologies. Her listed portfolio includes 2 patents, addressing traffic handling and network resilience.

Latest Patents

Qu’s latest listed patent, “Transient Loop Prevention in Ethernet Virtual Private Network Egress Fast Reroute,” describes a method for preventing transient loops between multi-homed provider edge (PE) devices. The method uses different EVPN labels for multi-home peer PEs and other PEs. When a link between a PE and a customer edge device is not operational, the PE discards traffic carrying the label designated for multi-home peers.

Her other listed patent, “Provider Edge Device and Method Implemented Thereon for Ethernet Virtual Private Network,” concerns label assignment between PE devices. The devices share an Ethernet segment identifier-excluded label and its correspondence to a combination of an ESI label and a VPN label. A PE can then encapsulate broadcast, unknown-unicast, or multicast traffic with the shared label and send it to the other PE.

Career Highlights

The supplied information associates Qu with Telefonaktiebolaget LM Ericsson, also known as Ericsson. Her listed patent work reflects a focus on EVPN mechanisms for forwarding traffic and supporting reliable network operation.

Collaborations

Qu’s listed coworkers include Jiang He and Zhe Zhou. The patent descriptions also illustrate coordination between PE devices, including shared label assignments and traffic exchange.

Conclusion

Haifeng Qu’s listed inventions address practical EVPN challenges, including transient-loop prevention and efficient handling of broadcast, unknown-unicast, and multicast traffic.