Oke I'm trying to understand what kind of L2 VPN's and L3 VPN's there are, and what there advantages are over the other. I'm hearing and seeing a lot of variants on the internet and I'm trying to keep them seperate as it's getting confusing.

Layer 2 MPLS VPNs, or VPLS (virtual private LAN service), offers a “switch in the cloud” style service. VPLS provides the ability to span VLANs between sites. L2 VPNs are typically used to route voice, video, and AMI traffic between substation and data center locations. Layer 3 VPN (VPRN) MPLS Layer 3 VPNs use a peer-to-peer model that uses Border Gateway Protocol (BGP) to distribute VPN-related information. This highly scalable, peer-to-peer model allows enterprise subscribers to outsource routing information to service providers, resulting in significant cost savings and a reduction in operational complexity for enterprises. 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 Depending on whether a provider-provisioned VPN (PPVPN) operates in layer 2 or layer 3, the building blocks described below may be L2 only, L3 only, or a combination of both. Multi-protocol label switching (MPLS) functionality blurs the L2-L3 identity. May 08, 2018 · With a L3 VPN, we don’t have a direct connection between sites at L2. With a L3 VPN, we peer with the SP edge, and by learning routes from the SP, we have L3 connectivity between sites A and B. Example 2: Purpose of both the way of VPN connectivity is same, to connect two different site. The only difference is the way we connect both the site Dec 05, 2015 · I take a high level overview of the different pieces of MPLS VPNs and how they all work together.

Solved: Hi, I read an atricles on an internet but still bit confused for the use and defination of L2 & L3 VPN. Can someone please explain below terms and its usage : 1)L2 MPLS VPN 2)L3 MPLS VPN

May 16, 2019 · L3 EVPN VXLAN Configuration Guide EVPN VXLAN Type-5 Layer 3 VPN (With Dual-Homed Layer 2 and Layer 3 Sites) Overview Ethernet VPN (EVPN) is an extension of the BGP protocol introducing a new address family: L2VPN (address family number 25) / EVPN (subsequent address family number 70). Layer 2 VPN emulates the behavior of a local area network (LAN) across an internet protocol (IP) or MPLS-enabled IP network allowing Ethernet devices to communicate with each other as if they were connected to a common LAN segment. 1:1/N:1 (aggregation) ; ‘native’/VPN (L2, L3) ; static/dynamic • PE-PE (“overlay”) tree signaling protocols Optional PIM or BGP (extensions) Not needed: native IPv4/IPv6, ‘direct-MDT’ mLDP, static mapping PE1 P1 P2 PE2 CE2 Upstream PE = P4 PE3 CE3 HeadendLSR TailendLSRs = CE2 Downstream PEs Content Source Receiver Receiver Provide Managed IP/ VPN services(L2 /L3),mVPN Converged common IP Core Backbone Simplify network Operations/Maintenance Simplified interface with other providers Secured infrastructure for service integrations Introduction

The most common type of switch is a Layer 2 switch which operates only on the Layer 2 of the OSI model (Data link layer). There are also advanced switches that can operate at both Layer 2 and Layer 3 of the OSI model. These are called Layer 3 switches as we will discuss later on. In this section we will focus on Layer 2 switches.

MPLS L2 VPN (Pseudowire) MPLS (Multiprotocol Label Switching) is technology which allows fast packet forwarding using “Labels” within a given network. VPN (Virtual Private Network) is then implemented to provide a connected oriented service by ensuring end-to-end reachability between non directly connected nodes. The most common type of switch is a Layer 2 switch which operates only on the Layer 2 of the OSI model (Data link layer). There are also advanced switches that can operate at both Layer 2 and Layer 3 of the OSI model. These are called Layer 3 switches as we will discuss later on. In this section we will focus on Layer 2 switches. Edit: Forgot, you don't actually have to decide now. VPLS although Layer 2 sits ontop of Layer 3 MPLS so if you wanted to create pseudowires between sites at any point for stuff like cross site HA or managing special routing instances e.g multicast, you can have your ISP add that functionality.