公开(公告)号：US20240259346A1

公开(公告)日：2024-08-01

申请号：US18161171

申请日：2023-01-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Vinayak Joshi ,  Venkata Varadhan Devarajan ,  Rajib Majila ,  Sathyanarayana Gopal ,  Hari Anil Kumar

IPC: H04L9/40

CPC classification number: H04L63/0254 ,  H04L63/0245 ,  H04L63/104

Abstract: A system for compacting traffic separation policies in campus networks, the system comprising an access layer switch and a campus border switch. The access layer switch is configured to receive a definition of one or more policies; responsive to receiving a packet, determine whether any of the policies apply to the packet; responsive to determining that none of the policies apply, cause a tag to be inserted into a communication header of the packet and forward the packet; and responsive to determining that one of the policies applies, forward or drop the packet according to the applicable policy and omit the tag. The campus border switch is configured to, responsive to receiving a packet from the access layer switch, determine whether the packet includes the tag, and responsive to determining that the packet includes the tag, apply a traffic separation policy associated with the tag to the packet.

公开(公告)号：US11750311B1

公开(公告)日：2023-09-05

申请号：US17977267

申请日：2022-10-31

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Venkata Varadhan Devarajan ,  Nick E. Demmon

IPC: H04J3/06 ,  H04L47/41

CPC classification number: H04J3/0667 ,  H04J3/0685 ,  H04L47/41

Abstract: Systems, methods, and devices are described which implement an internal Precision Time Protocol (PTP) instance on a stacked network device within a larger external PTP instance in the network to which the stacked network device. The internal instance of PTP is local to the stacked network device synchronizes the N devices (“members”) in the stack. Each of the members of the stacked network device may act as a BC in this local virtual instance of PTP. One member, which may be referred to as the commander node or primary member node, may synchronize its clock based on an external GSC or external BC, and then that member may act as a BC for a downstream member, and so on in an iterative manner until all of the members within the stacked network device have synchronized clocks. The individual members may also act as BCs to the external endpoints coupled thereto, providing PTP timestamp messages to those endpoints.