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MPLS Fundamentals by Luc De Ghein - CCIE No. 1897

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BGP

BGP version 4 (BGP-4) has been around for many years and is the standard protocol for interdomain routing. BGP is the protocol that makes the Internet work so well today. The service providers that make up the Internet run BGP between each other. They peer with other service providers through eBGP and run iBGP in their own networks. BGP is a routing protocol that is well suited to carry hundred of thousands of routes and has a proven record to back this up. BGP is also a routing protocol that allows flexible and extended policies to be implemented. That is why it is such a good candidate to carry MPLS VPN routes. As mentioned before, the combination of the RD with the IPv4 prefix makes up the vpnv4 prefix. It is this vpnv4 prefix that iBGP ...

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