公开(公告)号：US20230216779A1

公开(公告)日：2023-07-06

申请号：US17568623

申请日：2022-01-04

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Alexander K. Nelson ,  Goldy Tomy ,  Luis A. Mora ,  Saurabh Mohan

IPC: H04L45/00 ,  H04L45/02 ,  H04L12/46

CPC classification number: H04L45/26 ,  H04L45/02 ,  H04L45/66 ,  H04L12/4633 ,  H04L45/20 ,  H04L12/4641

Abstract: A system for layer-2 path tracing is provided. During operation, the system can send, from an originating device, a layer-2 trace packet with a packet type in a layer-2 header of the layer-2 trace packet. The packet type can indicate the trace packet to be a tracing packet. The system can then receive a layer-2 response packet from a respective participating device, which supports layer-2 path tracing, on a path to a target device of the trace packet. Subsequently, the system can obtain, from a payload of the response packet, trace information of a forward path to the participating device traversed by the trace packet and a reverse path from the participating device traversed by the response packet. The trace information can identify one or more layer-2 devices along the forward and reverse paths, and include one or more layer-2 identifiers corresponding to the identified one or more layer-2 devices.

公开(公告)号：US11991070B2

公开(公告)日：2024-05-21

申请号：US17568623

申请日：2022-01-04

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Alexander K. Nelson ,  Goldy Tomy ,  Luis A. Mora ,  Saurabh Mohan

IPC: H04L45/00 ,  H04L12/46 ,  H04L45/02

CPC classification number: H04L45/26 ,  H04L12/4633 ,  H04L45/02 ,  H04L45/20 ,  H04L45/66 ,  H04L12/4641

Abstract: A system for layer-2 path tracing is provided. During operation, the system can send, from an originating device, a layer-2 trace packet with a packet type in a layer-2 header of the layer-2 trace packet. The packet type can indicate the trace packet to be a tracing packet. The system can then receive a layer-2 response packet from a respective participating device, which supports layer-2 path tracing, on a path to a target device of the trace packet. Subsequently, the system can obtain, from a payload of the response packet, trace information of a forward path to the participating device traversed by the trace packet and a reverse path from the participating device traversed by the response packet. The trace information can identify one or more layer-2 devices along the forward and reverse paths, and include one or more layer-2 identifiers corresponding to the identified one or more layer-2 devices.

公开(公告)号：US20230217353A1

公开(公告)日：2023-07-06

申请号：US17568609

申请日：2022-01-04

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Goldy Tomy ,  Luis A. Mora

IPC: H04W48/16 ,  H04W28/02 ,  H04W72/04 ,  H04W48/04

CPC classification number: H04W48/16 ,  H04W28/0215 ,  H04W72/048 ,  H04W48/04

Abstract: A system for discovering tunnel neighbors is provided. During operation, the system can establish, at a first switch, a tunnel with a second switch in an overlay tunnel fabric that includes the first and second switches. Upon establishing the tunnel, the system can generate a discovery packet comprising a first set of discovery information indicating the configuration and capabilities of the first switch associated with the tunnel. The system can send the discovery packet to the second switch via the tunnel prior to initiating payload data communication via the tunnel. The system can also receive a second discovery packet from the second switch via the tunnel. The second discovery packet can include a second set of discovery information indicating the configuration and capabilities of the second switch associated with the tunnel. The system can then store the second set of discovery information in an entry of a data structure.