A basic BGP/MPLS IP VPN is an L3VPN network that covers only one carrier’s network, which is an MPLS backbone network that does not span multiple ASs, as shown in Figure 1. A basic BGP/MPLS IP VPN has the following characteristics: Transmits packets using extended BGP. Encapsulates and transmits VPN packets over MPLS LSPs serving as …
Continue reading Basic BGP/MPLS IP VPNSeptember 2015
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Fully meshed connections need to be established between IBGP peers to ensure the connectivity between IBGP peers. If there are n CX devices in an AS, n x (n-1)/2 IBGP connections need to be established. When there are a lot of IBGP peers, network resources and CPU resources are greatly consumed. Route reflection can solve the …
Continue reading BGP Route Reflector ” RR”During the initial stages of information technologies, telecom carriers used leased lines to provide Layer 2 connections for enterprises. The disadvantages of leased lines are as follows: Constructing leased lines takes a long period. Leased lines require huge investments. Leased lines are difficult to manage. After the emergence of asynchronous transfer mode (ATM) and frame …
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