公开(公告)号：US10911341B2

公开(公告)日：2021-02-02

申请号：US16547002

申请日：2019-08-21

Applicant: Cisco Technology, Inc.

Inventor： David John Zacks ,  Vikram Vikas Pendharkar ,  Shawn Michael Wargo ,  Thomas Szigeti

IPC: G06F15/16 ,  H04L12/26 ,  H04L12/721

Abstract: Systems and methods provide for monitoring a state of a network fabric utilizing user traffic. A fabric node (e.g., switch, router, or other network device) can receive user traffic from a node (e.g., network device, network appliance, or endpoint). The fabric node can match the user traffic to a tuple stored in a hardware counter matrix of the fabric node, the tuple corresponding to a count in the hardware counter matrix. The fabric node can increment the count. The fabric node can transmit an active probe to the node in response to the count not incrementing within a first time. The fabric node can transmit to a network management system data indicative of a disconnection between the fabric node and the node in response to the fabric node not receiving a response to the active probe within a second time.

公开(公告)号：US20200162355A1

公开(公告)日：2020-05-21

申请号：US16547002

申请日：2019-08-21

Applicant: Cisco Technology, Inc.

Inventor： David John Zacks ,  Vikram Vikas Pendharkar ,  Shawn Michael Wargo ,  Thomas Szigeti

IPC: H04L12/26 ,  H04L12/721

Abstract: Systems and methods provide for monitoring a state of a network fabric utilizing user traffic. A fabric node (e.g., switch, router, or other network device) can receive user traffic from a node (e.g., network device, network appliance, or endpoint). The fabric node can match the user traffic to a tuple stored in a hardware counter matrix of the fabric node, the tuple corresponding to a count in the hardware counter matrix. The fabric node can increment the count. The fabric node can transmit an active probe to the node in response to the count not incrementing within a first time. The fabric node can transmit to a network management system data indicative of a disconnection between the fabric node and the node in response to the fabric node not receiving a response to the active probe within a second time.