MPLS VPN is a virtual private network (VPN) for securely connecting two or more locations over the public Internet or a private MPLS VPN network. It harnesses the power of multiprotocol label switching (MPLS) to create VPNs, thereby giving the network engineers the flexibility to transport and route several types of network traffic using the technologies of a MPLS backbone.
MPLS VPN networks are secured through encryption on a customer’s router. Such a network is known as a CPE based MPLS VPN. Alternately, they are secured through the MPLS VPN provider’s network router, and such networks are known as a network based MPLS VPN.
MPLS VPN services are typically provisioned over Internet T1 lines or a private MPLS circuit; higher bandwidth speeds are offered as well (MPLS Ethernet, NxT1, DS3), with options for managed MPLS VPN services.
Uses
• MPLS IP VPN services are used by businesses to provide reliable, secure, MPLS VPN service for applications including credit card processing, file sharing, data backup, MPLS VOIP, or remote access.
• MPLS VPN’s can also be configured to carry voice, Internet, and IP VPN services together on an Integrated MPLS T1 line.
Types of MPLS VPNs
• Point-to-point (pseudowire) – Point-to-point MPLS VPNs employ VLLs (virtual leased lines) for providing Layer2 point-to-point connectivity between two sites. Ethernet, TDM, and ATM frames can be encapsulated within these VLLs. Point-to-point MPLS VPNs might be used to encapsulate TDM T1 circuits attached to RTUs, forward non-routed DNP3 traffic across the backbone network to the SCADA master controller etc.
• Layer 2 VPN (VPLS) – Layer 2 MPLS VPNs, or VPLS (virtual private LAN service), offers a “switch in the cloud” style VPLS 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) – Layer 3, or VPRN (virtual private routed network), utilizes layer 3 VRF (VPN/virtual routing and forwarding) to segment routing tables for each “customer” utilizing the service. The customer peers with the service provider router and the two exchange routes, which are placed into a routing table specific to the customer. L3 VPN could be used to route traffic between corporate or datacenter locations.
References:
http://en.wikipedia.org/wiki/MPLS_VPN
http://www.itquotes.com/what-is-mpls-vpn.html
MPLS VPN networks are secured through encryption on a customer’s router. Such a network is known as a CPE based MPLS VPN. Alternately, they are secured through the MPLS VPN provider’s network router, and such networks are known as a network based MPLS VPN.
MPLS VPN services are typically provisioned over Internet T1 lines or a private MPLS circuit; higher bandwidth speeds are offered as well (MPLS Ethernet, NxT1, DS3), with options for managed MPLS VPN services.
Uses
• MPLS IP VPN services are used by businesses to provide reliable, secure, MPLS VPN service for applications including credit card processing, file sharing, data backup, MPLS VOIP, or remote access.
• MPLS VPN’s can also be configured to carry voice, Internet, and IP VPN services together on an Integrated MPLS T1 line.
Types of MPLS VPNs
• Point-to-point (pseudowire) – Point-to-point MPLS VPNs employ VLLs (virtual leased lines) for providing Layer2 point-to-point connectivity between two sites. Ethernet, TDM, and ATM frames can be encapsulated within these VLLs. Point-to-point MPLS VPNs might be used to encapsulate TDM T1 circuits attached to RTUs, forward non-routed DNP3 traffic across the backbone network to the SCADA master controller etc.
• Layer 2 VPN (VPLS) – Layer 2 MPLS VPNs, or VPLS (virtual private LAN service), offers a “switch in the cloud” style VPLS 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) – Layer 3, or VPRN (virtual private routed network), utilizes layer 3 VRF (VPN/virtual routing and forwarding) to segment routing tables for each “customer” utilizing the service. The customer peers with the service provider router and the two exchange routes, which are placed into a routing table specific to the customer. L3 VPN could be used to route traffic between corporate or datacenter locations.
References:
http://en.wikipedia.org/wiki/MPLS_VPN
http://www.itquotes.com/what-is-mpls-vpn.html
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