From the course: BGP Essential Training

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iBGP configuration

iBGP configuration - Cisco Routers Tutorial

From the course: BGP Essential Training

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iBGP configuration

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- [Instructor] When you configure BGP on routers across autonomous systems, that is what we refer to as external BGP. However, there are cases whereby we needed to configure BGP to routers within the same autonomous systems such as when we got transit routes. Such is what we refer to as internal BGP. In our example, routers R2 and R3, all belong to the same autonomous system of 65023. Rest routers R1 and R4 are in their respective autonomous systems. Configuring internal BGP is almost similar to that of external BGP, but with just a few minor considerations. Let me show you what I mean. I got here network via Cisco Modeling Labs for demonstration. I've already configured BGP in all routers except for router R3, so that we can see iBGP configuration in action. Let me then go to router R3. As with any routing protocols, we start first by going to the global configuration mode. So for my end I'll type in en…

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