Practical Implementation on Filtering routes from Routers

Name: Practical Implementation on Filtering routes from Routers
Rating: 4.5 (6 reviews)

CCIE - Learn how to Filter unwanted networks and routes practically with Labs

Created byHabib Zakaria

Last updated 1/2025

English

What you'll learn

The student will learn how to filter unwanted networks from the routing tables from the core routers

Course content

1 section • 9 lectures • 46m total length

Instructor Introduction0:28
In this video, the author will build a network to simulate common routing table in an organization.
Topics1:55
In this video, the author presents the course topics that is covered and course. The instructor also covers the features of Prefix List.
Overview of Network Classes5:59
In this video the author discusses the Network Classes.
Building Lab togather12:02
In this video the author will build the lab step by step with all networks and apply dynamic routing protocol.
Case # 1 - Lab4:22
In this video the viewer will learn how to deny a particular network and allow all other networks.
Case # 2 - Lab4:48
In this video the viewer will learn how to allow class A networks that are not subnetted.
Case # 3 - Lab4:43
In this video the viewer will learn how to allow class B networks that are not subnetted.
Case 4 - Lab4:46
In this video the viewer will learn how to allow class B networks that are not subnetted.
Recap and Summary of Route Filtering6:59
In this lecture the author discusses the key points on mechanisms for route filtering, how to apply route filtering, best practices and finally specific considerations.

Requirements

CCNA, Cisco Routers 1800, 1900, 2900, GNS AND VIRL SIMULATOR

Description

In this course the student will learn important skill of how to use Prefix-list and filter unwanted routes from the routing tables. This skill will also help the student to keep the routing tables clean in an organization, thus keeping the network safe from malicious injected networks.

Follow the author as he goes through the steps below

1. Building Topology to simulate a routing between three routers.

2. The instructor will go through the classes of networks which will show how to identify networks using subnet mask.

3. Four cases are created that will show step by step filtering of the routes using Prefix-lists.

4. Case 1 will have a scenario of filtering a network using source address and mask.

5. Case 2 will have a scenario of allowing routes that are class A but not subnetted.

6. Case 3 will have a scenario of allowing routes that are class B but not subnetted.

7. Case 4 will have a scenario of allowing routes that are class C but no subnetted.

The instructor is going to build the lab step by step and wishes to have the students to mimic the lab in their own simulator and follow the steps as the network is built. The course is practical in nature and is suitable for anyone who has access to routers and can follow the steps in this course.

The last lecture summarizes the importance of route filtering. The instructor discusses the purpose of route filtering, mechanisms for route filtering, best practices, protocol specific considerations.

Welcome to the course and lets start learning.

Who this course is for:

Network Engineers, Network Analyst, Network Administrators, CCNA Certified, CCNP Certified, Information Technology Students