At the moment, the debate between Layer 2 VPN services based on MPLS and Layer 3 MPLS VPNs is largely theoretical; Layer 2 VPN service are not widely available yet.. But the two are different

Layer 2 vs Layer 3 - What's The Difference? | VPNpro Oct 03, 2019 Application-layer VPNs guard access | Network World The central element of an application-layer VPN is the application-layer proxy, typically provided in the form of a dedicated network appliance. The proxy offers a single point of administration IBM Cloud - VPN Access for Data Centers and PoPs | IBM

The OSI Layer model is a 7 layered abstracted view of a computer network. The first 3 are really the important ones that Access Server works with. OpenVPN Cloud: Try Today with 3 Free VPN Connections

M Series,EX Series,T Series,PTX Series,MX Series. On EX9200 switches, graceful Routing Engine switchover (GRES), nonstop active routing (NSR), and logical systems are not supported on Layer 2 VPN configurations.

A Layer 2 MPLS VPN is a term in computer networking. It is a method that Internet service providers use to segregate their network for their customers, to allow them to transmit data over an IP network. This is often sold as a service to businesses. Layer 2 VPNs are a type of Virtual Private Network (VPN) that uses MPLS labels to

Looking ahead: A Brief Guide to VPN Security & Vulnerabilities Secure Sockets Layer (SSL) is IPsec’s default alternative as a VPN protocol. Originated in the 1990s, SSL is the most recent method for implementing VPNs, which is becoming increasingly popular. Later in 2015, this was overtaken by Transport Layer Security (TLS) due … draft-bgbw-opsawg-vpn-common-00 - A Layer 2/3 VPN Common Introduction Various VPN-related YANG data modules were specified by the IETF (e.g., Layer 3 VPN Service Model (L3SM) or Layer 2 VPN Service Model (L2SM) ). Others are also being specified (e.g., Layer 3 VPN Network Model (L3NM) [I-D.ietf-opsawg-l3sm-l3nm] or Layer 2 VPN Network Model (L2NM) [I-D.ietf-opsawg-l2nm]). These modules have data Deciding when to offer Layer 2 or Layer 3 VPNs Offering VPN services isn't a simple Layer 2 or Layer 3 choice. If you want to implement true convergence onto a single core infrastructure, your core network should support the transport of public IP and private IP (VPN), as well as a number of legacy Layer 2 WAN and LAN technologies (for example, with Any Transport over MPLS – AtoM).