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：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.