VPNs
L2VPN – LDP based L2VPN
1. Intro LDP based L2VPN, often referred as Martini L2VPN, is used for connectivity of customer attachment circuits across the provider MPLS network. A L2VPN is a point-to-point connection between two PE routers. This type of VPN emulates transparent L2 services for the customers. Normally the L2 attachment circuits on each end are the same […]
L3VPN – Hub & Spoke VPN: One Interface
1. Intro In an MPLS L3VPN, Hub-and-Spoke is a VPN topology where spoke sites cannot communicate directly with each other. Traffic between spokes must pass through the hub PE/site. This is commonly used when the hub provides centralized firewalling, Internet access, shared services, security inspection, or centralized routing. The are two main categories for configuring […]
L3VPN – Hub & Spoke VPN: Two Interfaces
1. Intro In an MPLS L3VPN, Hub-and-Spoke is a VPN topology where spoke sites cannot communicate directly with each other. Traffic between spokes must pass through the hub CE. This is commonly used when the hub provides centralized firewalling, Internet access, shared services, security inspection, or centralized routing. The are two main categories for configuring […]
L3VPN – auto-export
1. Intro The auto-export statement enables you to leak routes between VRF instances that are locally configured on a PE router. Auto export is always applied on the local PE router, because it applies to only local prefix leaking by evaluating the export policy of each VRF and determining which route targets can be leaked. […]
L2VPN – Overview and Basic Configuration
LDP (Martini) and BGP (Kompella) are two L2VPN technologies are supported in Junos. Both L2VPN technologies are used for connectivity of customer attachment circuits across the provider MPLS network. A L2VPN is a point-to-point connection between two PE routers. This type of VPN emulates transparent L2 services for the customers. Normally the L2 attachment circuits […]