practical 2 :- Using the AS_PATH Attribute  In Modern Computer Network
Channel: BANSODE TECH SOLUTION
Date: 2021-07-06

practical 2 :- Using the AS_PATH Attribute  In Modern Computer Network

https://youtu.be/H688NKA2-6w
Objectives
• Use BGP commands to prevent private AS numbers from being advertised to the outside world.
• Use the AS_PATH attribute to filter BGP routes based on their source AS numbers.

Background 

The International Travel Agency’s ISP has been assigned an AS number of 300. This provider uses BGP to exchange routing information with several customer networks. Each customer network is assigned an AS number from the private range, such as AS 65000. Configure the ISP router to remove the private AS numbers from the AS Path information of CustRtr. In addition, the ISP would like to prevent its customer networks from receiving route information from International Travel Agency’s AS 100. Use the AS_PATH attribute to implement this policy.


Step 1: Configure interface addresses.
Step 2: Configure BGP.
Step 3: Remove the private AS.
Step 4: Use the AS_PATH attribute to filter routes.