Real time and high resolution buffer occupancy monitoring and recording

Patent metadata

Field	Value
Publication number	US-8942100-B2
Application number	US-201213708229-A
Country	US
Kind code	B2
Filing date	Dec 7, 2012
Priority date	Sep 18, 2012
Publication date	Jan 27, 2015
Grant date	Jan 27, 2015

Abstract

Presented herein are techniques for detection and characterization of buffer occupancy of a buffer in a network device. Packets are received at a network device. The packets are stored in a buffer of the network device as they are processed by the network device. An occupancy level of the buffer is sampled at a sampling rate. Occupancy levels of the buffer over time are determined from the sampling, and traffic flow through the network device is characterized based on the occupancy levels.

First claim

What is claimed is:

1. A method comprising:
receiving packets at a network device;
storing the packets in a buffer of the network device as they are processed by the network device;
sampling an occupancy level of the buffer at a sampling rate;
tracking occupancy levels of the buffer over time determined from the sampling; and
characterizing traffic flow through the network device based on the occupancy levels, wherein tracking occupancy levels comprises:
assigning each of…

Assignees

• Cisco Tech Inc

Inventors

• Edsall Thomas J
• Devadas Ganga Sudharshini
• Nguyen Dennis Khoa Dang
• Huang Chih-Tsung

Classifications

• H04L43/045

  Electricity · mapped topic

• H04L49/9005

  Electricity · mapped topic

• G06F2213/3808

  Physics · mapped topic

• H04L47/30

  Electricity · mapped topic

• G06F13/385 Primary

  Physics · mapped topic