What you need to know about BGP/VPN fast convergence

IP/MPLS VPN technology has become the basic technology on the multi-service IP/MPLS network. On one MPLS VPN network, the service route is carried by the BGP technology. When the network link or node becomes faulty, both the public network route and BGP private network route needs to be iterated or converged. This text describes some technologies and methods of the BGP/VPN fast convergence.