New Training: Basic OSPF IPv4 Configuration

In this 11-video skill, CBT Nuggets trainer Keith Barker teaches you how to configure and verify OSPF, including the use of multiple areas, summarization, and filtering. Watch this new Cisco training.

Learn Cisco with one of these courses:

• Cisco CCNP Enterprise Core

• Cisco OSPF Configuration

This training includes:

• 11 videos

• 1.4 hours of training

You’ll learn these topics in this skill:

• Intro to OSPF Configuration

• OSPF Network and Interface Statements

• Correcting OSPF Costs

• Reducing LSAs with a Stub Area

• Totally Stubby Areas

• Priority and Router ID

• Configure Administrative Distance (AD) and Interface Cost

• OSPF Network Types

• Authentication

• Default Routes

• Thank You. Here’s what’s next.

What is an OSPF Stub Area?

OSPF or Open Shortest Path First protocol is an IP routing protocol designed to determine the shortest path for data packets to traverse a network. In this routing strategy, OSPF determines which routers to send data packets through based on path length. Understandably, organizations are going to want to have some influence over what routers can accept and pass along data packets. To gain this control, organizations make use of what’s called an OSPF Stub Area to limit the data transmission through certain areas of the network.

Formally, a Stub Area is an area of a network that you wish to disallow data transmission from external routers. This Stub Area provides a few incredible advantages for organizations. First off, creating a Stub Area can greatly reduce traffic into certain areas of a network, effectively prioritizing certain traffic into that area. Secondly, Stub Areas can act as an enhancement to a security posture as it limits the traffic from certain external routes.