公开(公告)号：US10795745B2

公开(公告)日：2020-10-06

申请号：US15833414

申请日：2017-12-06

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Vinod Arjun ,  Sheausong Yang

IPC: G06F11/00 ,  G06F11/07 ,  H04L12/26

Abstract: The present disclosure discloses a method and a network device for failure detection of nodes in a cluster. Specifically, a network device transmits data to another device at a first time. The network device then receives an acknowledgment of the data from the second device at a second time. Next, the network device determines a Round Trip Time (RTT) for the first device and the second device based on the first time and the second time. Based on the RTT, the network device determines a first frequency for transmitting a heartbeat protocol message between the first device and the second device, and transmits a heartbeat protocol message between the first device and the second device at the first frequency.

公开(公告)号：US10425870B2

公开(公告)日：2019-09-24

申请号：US15795803

申请日：2017-10-27

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Isaac Theogaraj ,  Puneet Joshi ,  Shishir Verma ,  Sheausong Yang

IPC: H04W36/10 ,  H04L12/26 ,  H04L12/70 ,  G06F21/00 ,  H04L29/06 ,  H04W84/12 ,  H04W88/12 ,  H04L12/707 ,  H04L12/803 ,  H04W52/00 ,  H04L29/14 ,  H04L29/08 ,  G06F11/20 ,  H04W36/24 ,  H04W8/30

Abstract: A non-transitory computer readable medium comprising instructions which, when executed by one or more hardware processors, causes performance of operations comprising: analyzing, by a first network coordination device, at least one session of the client device for selected characteristics, the first network coordination device being the primary network coordination device for the client device; and providing, by the first network coordination device, current session information of the at least one session of the client device having the selected characteristics to the second network coordination device, the second network coordination device being the standby network coordination device for the client device is shown.

公开(公告)号：US10855682B2

公开(公告)日：2020-12-01

申请号：US16068783

申请日：2016-09-15

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Vinod Arjun ,  Suryanarayanan Devarajan ,  Isaac Theogaraj ,  Sheausong Yang ,  Kavitha Kamarthy

IPC: H04L29/06 ,  H04L29/08 ,  H04L29/14

Abstract: Examples described herein include a method and system for determining a number of controllers in a Network Authentication Server (NAS) controller cluster, wherein each of the controllers in the NAS controller cluster includes a unique Physical Internet Protocol (PIP) address; creating a number of unique Virtual Internet Protocol (VIP) addresses for use by an external authentication server (EAS) to communicate with the controllers in the NAS controller cluster, wherein the number of VIP addresses is to be proportional to the number of PIP addresses; and mapping each controller in the NAS controller cluster to a plurality of VIP addresses, wherein the VIP addresses are to have different priorities for different controllers in the NAS controller cluster.