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Layer 2 MPLS VPN information


Logical View of a Layer 2 MPLS VPN.

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 transport data. The communication occurs between routers that are known as Provider Edge routers (PE routers), as they sit on the edge of the provider's network, next to the customer's network.

Internet providers who have an existing Layer 2 network (such as ATM or Frame Relay) may choose to use these VPNs instead of the other common MPLS VPN, Layer 3. There is no one IETF standard for Layer 2 MPLS VPNs. Instead, two methodologies may be used. Both methods use a standard MPLS header to encapsulate data. However, they differ in their signaling protocols.

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Layer 2 MPLS VPN

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is no one IETF standard for Layer 2 MPLS VPNs. Instead, two methodologies may be used. Both methods use a standard MPLS header to encapsulate data. However...

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MPLS VPN

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using an MPLS backbone. There are three types of MPLS VPNs deployed in networks today: 1. Point-to-point (Pseudowire) 2. Layer 2 (VPLS) 3. Layer 3 (VPRN)...

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Multiprotocol Label Switching

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Formation of the IETF MPLS working group 1999: First MPLS VPN (L3VPN) and TE deployments 2000: MPLS Traffic Engineering 2001: First MPLS Request for Comments...

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Virtual private network

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(MPLS) functionality blurs the L2–L3 identity.[original research?] RFC 4026 generalized the following terms to cover L2 MPLS VPNs and L3 (BGP) VPNs, but...

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Ethernet VPN

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Ethernet VPN (EVPN) is a technology for carrying layer 2 Ethernet traffic as a virtual private network using wide area network protocols. EVPN technologies...

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Virtual routing and forwarding

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overlapping IP addresses. IP VPN is most commonly deployed across an MPLS backbone as the inherent labeling of packets in MPLS lends itself to the identification...

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Virtual Private LAN Service

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The mechanisms used are very similar to those used in establishing Layer-3 MPLS VPNs. Each PE is configured to participate in a given VPLS. The PE, through...

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OSI model

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CCNP Security VPN 642-648 Official Cert Guide (2 ed.). Cisco Press. p. 22. ISBN 9780132966382. Spott, Andrew; Leek, Tom; et al. "What layer is TLS?". Information...

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Overlay network

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examples of overlay networking technologies are, VXLAN, BGP VPNs, both Layer 2 and Layer 3, and IP over IP technologies, such as GRE or IPSEC Tunnels...

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Multilayer switch

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networking device that switches on OSI layer 2 like an ordinary network switch and provides extra functions on higher OSI layers. The MLS was invented by engineers...

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Penultimate hop popping

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a Layer 3 MPLS VPN (RFC 2547) environment as it reduces the load on the LER. If this process didn't happen, the LER would have to perform at least 2 label...

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Open Shortest Path First

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OSPF over a MPLS VPN, where the service provider uses BGP or RIP as their interior gateway protocol. When using OSPF over MPLS VPN, the VPN backbone becomes...

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Multicast address

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Generation Multicast-Enabled Applications - Label Switched Multicast for MPLS, VPN, VPLS, and Wholesale Ethernet. Morgan Kaufmann/Elsevier. p. 7. ISBN 978-0-12-384923-6...

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L2TPv3

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alternative protocol to Multiprotocol Label Switching (MPLS) for encapsulation of multiprotocol Layer 2 communications traffic over IP networks. Like L2TP...

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BSNL Broadband

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conferencing, IP telephony, distance learning, messaging, multi-site MPLS VPNs with Quality of Service (QoS) guarantees. The subscribers can access the...

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Wide area network

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Protocols including Packet over SONET/SDH, Multiprotocol Label Switching (MPLS), Asynchronous Transfer Mode (ATM) and Frame Relay are often used by service...

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Voice over IP

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secure private links. Examples include personal VPN, site-to-site VPN, private networks such as MPLS and SD-WAN, or via private SBCs (Session Border Controllers)...

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YANG

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for Geographic Locations RFC 9181: A Common YANG Data Model for Layer 2 and Layer 3 VPNs RFC 9196: YANG Modules Describing Capabilities for Systems and...

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Border Gateway Protocol

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widely deployed in case of MPLS L3 VPN, to exchange VPN labels learned for the routes from the customer sites over the MPLS network, in order to distinguish...

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Cisco

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Embrane's software platform, which provides layer 3–7 network services for things such as firewalls, VPN termination, server load balancers and SSL offload...

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Juniper M series

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uplink capabilities. It is capable of supporting MPLS services at Layers 2 and 3, including Layer 3 VPNs. The M120 is designed to deliver superior redundancy...

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Comparison of TLS implementations

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The Transport Layer Security (TLS) protocol provides the ability to secure communications across or inside networks. This comparison of TLS implementations...

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List of information technology initialisms

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ISBN 978-0-470-17560-6. CCNA Exploration 4.0 5.0 Routing Protocols and Concepts Student Lab Manual. Cisco Press. The ISO model is used for layer names....

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MikroTik

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service providers, such as OSPF, BGP, and Multiprotocol Label Switching (VPLS/MPLS). It supports both Internet Protocol versions IPv4 and IPv6 and provides...

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Computer network

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2018-03-14. Retrieved 2012-06-17. Rosen, E.; Rekhter, Y. (March 1999). BGP/MPLS VPNs. doi:10.17487/RFC2547. RFC 2547.  This article incorporates public domain...

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Leased line

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propose alternatives to frame-relay or ATM networks such as VPNs (hardware and software) and MPLS networks (that are in effect an upgrade to TCP/IP of existing...

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