What is the Dissimilarity Between l2 MPLS And l3 MPLS?

For starters, you need to know what are the technologies of MPLS and after that would be able to compare the difference as well as profit between the different MPLS

What is MPLS?

Multi-Protocol Label Switching (MPLS) is an Internet Engineering Task Force (IETF) government-approved wide area networking standard created for:

•  Helping carriers and large corporations scale their networks as increasingly large routing tables become more complex for managing. Juniper JN0 347 Dumps

•  Combining flexible any-to-any communication which would be found on PSTN or the internet with the reliability as well as security delivered by a private line, frame relay or ATM services.

•  Offering differentiated performance levels as well as prioritization of delay and non-delay sensitive traffic, as well as voice applications and multimedia applications, all on a single network.

•  Addressing traffic management issues by prioritizing time-sensitive applications.

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MPLS Layer 2 Virtual Private LAN Services (VPLS):

Virtual Private LAN services are growing in popularity for distributing ethernet services. They would be able to combine MPLS and Ethernet, allowing both customers as well as carriers to benefit. For over two decades, Ethernet switching has been dominating the local area network, while IP routing has been dominating the carrier networks. IP backbones have been used for providing Internet access and, more recently, to provide IP VPN access. Juniper JN0 333Dumps

Corporate VPN services have been typically provided with existing TDM, ATM as well as Frame Relay Networks. During this period of time, Ethernet would have continued for scaling the bandwidth spectrum as well as with its simplicity and cost-effectiveness, it would have established itself as the infrastructure of choice in the metro as well as the WAN.

Otherwise known as transparent Ethernet services, VPLS would be considered as a newer protocol that works over MPLS and gives customers an amalgamation of the benefits of the two above network types, i.e. the ability to operate a multipoint network and passing all traffic at Layer 2 over the WAN.

Advantages of Layer 2

•  It is a transparent interface, which means no router hardware investment would be required for bandwidth upgrades

•  Layer 2 means that traffic is being tagged by MAC address, as opposed to an IP address.

•  Low latency, which means to be switched as opposed to the route.

•  Plugging & Playing so as to ease the deployment, which means no configuration required for new sites, which would be appearing like new devices on a LAN. Juniper JN0 634 Dumps

MPLS Layer 3 IP/VPN

It would be particularly suitable for vast, multi-site enterprises, i.e. retail chains, which would be deploying a large number of low bandwidth sites or a large corporate with offices which would be deployed globally. This type of service is considered for a natural progression away from legacy frame relay as well as ATM services.

Advantages of MPLS Layer 3 IP/VPN

•  IP/VPNs would be extremely scalable for fast deployment.

• ‘any to any‘connectivity: A shorter hop would count between two local sites is considered to be more efficient than ‘tromboning’ back into a central point. This is especially relevant for global networks where latency would be increasing as packets travel over long geographical distances.

•  Preparing for voice as well as data convergence. In order to implement a blanket ‘class of service’ prioritization, which would be based on traffic type, is made quite simple across multi-site networks.

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