Knowledge Base

Enhanced Interior Gateway Routing Protocol

What is EIGRP?

EIGRP is an advanced distance-vector routing protocol that uses the Diffused Update Algorithm (DUAL) to determine the best path to a destination network. It offers several advantages over traditional distance-vector protocols, including:

  • Faster convergence: EIGRP quickly reacts to topology changes, minimizing routing instability.
  • Reduced bandwidth usage: EIGRP only sends updates to routers that need them, saving valuable bandwidth.
  • Scalability: EIGRP can handle large and complex networks efficiently.
  • Unequal-cost load balancing: EIGRP can distribute traffic across multiple paths, even if they have different costs.

Who uses EIGRP?

EIGRP is a popular choice for enterprise networks due to its efficiency and scalability. It is commonly used in:

  • Large corporate networks
  • Data centers
  • Service provider networks

What will you learn here?

This page will provide you with a comprehensive understanding of EIGRP, including:

  • Fundamentals: Learn the basic concepts of EIGRP, including its metrics, topology table, and routing table.
  • Configuration: Discover how to configure EIGRP on Cisco routers.
  • Advanced features: Explore advanced EIGRP features like unequal-cost load balancing and route summarization.
  • Troubleshooting: Learn how to troubleshoot common EIGRP issues.
  • Best practices: Get tips and best practices for implementing EIGRP in your network.

We also encourage you to explore the resources listed below for further learning.


Cisco EIGRP documentation:

We hope you find this page informative and helpful.