8.1. INTRODUCTION
The previous chapter laid out the foundations of BGP/MPLS L3VPN. This chapter explores some of the advanced topics that arise in the context of L3VPNs such as scalability, resource planning, convergence and security. All of these require a network-wide view and analysis. Therefore, it is necessary to first discuss two more important components of the VPN solution: PE-CE routing and route reflectors.
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