Here we can find an example on how to configure the second carrier to provide BGP/MPLS IP VPN services when first carrier and the second carrier are in different ASs. Networking Requirements As shown in Figure 1, the Level 1 carrier and the Level 2 carrier are in different ASs. The Level 2 carrier provides BGP/MPLS …
Continue reading Configuring the Carrier’s Supporting Carrier (Inter-AS)May 2015
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A customer of an SP providing the BGP/MPLS IP VPN service may also be an SP. In this case, the SP providing the BGP/MPLS IP VPN service is called the provider carrier or the first carrier; the customer is called the customer carrier or the second carrier, as shown in Figure 1. This networking model is …
Continue reading Carrier’s Supporting Carrier CSCConfiguring Hierarchy Of VPN – HoVPN We already explain the HoVPN before so now we will know how to configure it . Networking Requirements As shown in Figure 1: CE1 and CE2 belong to VPN-A and the VPN target is 1:1. CE1 accesses the backbone network through the UPE and CE2 accesses the network through the …
Continue reading Configuring HoVPNIn this example, by configuring a VRRP backup group in load balancing mode, you can provide the mutual backup function to devices in the VRRP backup group and balance network traffic among these devices. Networking Requirements As shown in Figure 1. CX-A serves as the master CX device of backup group 1 and the backup CX device of backup group …
Continue reading Configuring VRRP in Load Balancing ModeThe Virtual Router Redundancy Protocol (VRRP) is a fault tolerant protocol, and it groups several routers into a virtual router. If the next hop router of a host is defective, VRRP uses a mechanism to switch traffic to another router. This ensures continuity and reliability of communications. In this example, by configuring a VRRP backup group in master/backup mode, …
Continue reading Configuring VRRP in Master/Backup ModeBGP Path Selection Algorithm Border Gateway Protocol (BGP) routers typically receive multiple paths to the samedestination. The BGP best path algorithm decides which is the best path toinstall in the IP routing table and to use for traffic forwarding. How the Best Path Algorithm Works BGP assigns the first valid path as the …
Continue reading BGP Path Selection Algorithm in Cisco, Huawei and Juniper