► Basic eBGP configuration with AS-path prepend

Here is a sample eBGP configuration with Metric option for someone has a single connection with an ISP or remote site. This article will show how to apply Metric option. If you want to see more complex examples(with multiple ISP connections), check a list of BGP sample configuration page. This configuration has been tested and verified at our lab. If you have any questions and problems, try our web BGP tutorial page first. And If you still need further assistance, please feel free to contact us by email or use our Forum.cisconet.com

► Basic eBGP configuration with Local-pref

Here is a sample eBGP configuration with default route option for someone has a single connection with an ISP or remote site. If you want to see more complex examples(with multiple ISP connections), check a list of BGP sample configuration page. This configuration has been tested and verified at our lab. If you have any questions and problems, try our web BGP tutorial page first. And If you still need further assistance, please feel free to contact us by email or visit our Forum.cisconet.com.

What is the benefits from it? also what situation we can use it ?

• If you have only one ISP connection; you don't have to receive all the routes. It just require more memory one our router and make high CPU on CPE

• If you have low memory on your CPE

• If you are using Ethernet, you don't want to use static route. B/C most of Ethernet type of ISP links are connected Layer 2 switch at somewhere near your location. Meaning if an outage is occured beyond the swith your Ethernet interface won't be down. So, your Ethernet interface would be up/up while ISP link is having an outage. By default route statement. Your router will keep on sending traffic to the next hop.

Please Share it with

Here is a sample EBGP configuration for someone who has two connections with an ISP or remote site. It is a called multihoming / multi-hop EBGP. This configuration has been tested and verified at our lab. If you have any questions and problems, try our web BGP tutorial page first. And If you still need further assistance, please feel free to contact us by email or use our Forum.

"List of BGP Sample Configurations"