ARP - The Address Resolution Protocol

How ARP works, behaves, and what it looks like.
Free tutorial
Rating: 4.6 out of 5 (111 ratings)
3,284 students
38min of on-demand video
English [Auto]

What the ARP Protocol looks like
How the ARP protocol works in Ethernet and IPv4
The purpose and behavior of ARP
See ARP in action using Wireshark
Follow Me exercises you can do on your computer


  • None


This brief course is an explanation as to what the purpose and behavior of the ARP (Address Resolution Protocol) protocol for Ethernet and IPv4 networks. 

The video lesson is complemented with three varying experiments that show you how you can use the arp command on your local machine and on network equipment and use free tools like Wireshark and the Colasoft MAC scanner to view and leverage ARP in troubleshooting networks..

Who this course is for:

  • Anyone wanting to understand how ARP works and behaves
  • Anyone that works in Data Networking today


Researcher, Author, Instructor, Consultant
Andrew Walding
  • 4.4 Instructor Rating
  • 266 Reviews
  • 4,011 Students
  • 7 Courses

Mr. Walding enjoys more than thirty years of hands-on/front-line experience in the communications industry. His experience spans access engineering, transmission systems, network management, network implementation scenarios, network and field operations, sales, and engineering support. In all of his varied roles, he has maintained a focus on emerging technologies: how new technologies are implemented (in terms of both products and services), as well as how emerging technologies offer national and international business opportunities. Mr. Walding is a CPI (CBRS Certified Professional Installer).

Following this comprehensive history of hands-on technical and business experiences, Mr. Walding founded CellStream,Inc., a telecommunications consulting firm based in the Dallas/Ft. Worth, TX metroplex. He also became a member and author of the Technical Faculty of Telecommunications ResearchAssociates (TRA) and then founded the Online School of Network Sciences, and has since trained thousands of fellow telecommunications professionals in existing and emerging technologies.


Has over 30 years experience in data and telecommunications engineering, network implementation and management, and product development of packet ATM/Frame Relay/Ethernet switching, access products, transmission systems and network management products.

Faculty Member and author, educating telecommunications professionals in emerging packet/cell-based protocols and technologies.

Online web application design and implementation using Joomla and Moodle

Has authored many hands-on instructor led courses on a variety of subjects including MPLS, MPLS L3 and L2 VPN's, and IP over Optical Networks, Ethernet, IPv4, IPv6, Wireshark, VoIP, Wireless, WLAN/Wi-Fi, CBRS, Network Security and many more.

Led an engineering team through development and customer acceptance of one of the first production ISDN capable CDMA wireless local loop systems, based in Europe as an expatriate.

Led engineering efforts for an international FITL system utilizing V5.1/V5.2 digital concentration techniques.

A team leader for engineering design of a very large SONET/SDH broadband cross-connect system utilizing latest ASIC and optical technologies.

Has developed courses for the first VSAT satellite systems deployed in North America and instructed field operations staff for a nationwide service group.

Has five issued patents and one pending in telecommunications architectures and methodologies.

Directed all Field Service, Customer Service, and Network Operations activities for the North American Western Region of a major news and information provider.

Developed and implemented industry leading packet technologies, strategies and other technical implementations for private CATV Broadband network in downtown San Francisco.

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