Traffic Flow from the Internet to the VPN Overview

When traffic flows from the Internet to a VPN, the traffic arrives at the PE router on an interface in the global context. BGP performs a lookup in the global IP routing table, which normally does not contain VPN routes. You can use one of the following methods to advertise public VPN routes to the Internet (get the routes into the global routing table) and thus enable traffic flow from the Internet to those VPNS.

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