Difference Between MPLS and Leased Line

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WAN connectivity is provided by both MPLS and leased lines. A leased line establishes a link between two points, whereas MPLS is done as a whole mesh.


“Multiprotocol Label Switching” stands for “Multiprotocol Label Switching.” It’s a data transmission system. In an MPLS network, data packets are assigned labels. Packet-forwarding decisions are solely dependent on the contents of this label, rather than the packet itself. A new label is attached to the packet at each stage to notify the router what to do with it until it reaches its destination. It permits the building of end-to-end circuits across all types of transport mediums by employing any protocol.

It’s a complicated set of functions. reliance on a specific data link layer technology, such as This approach eliminates synchronous optical networking, frame relay, and asynchronous transfer


Multiple layer-2 networks are no longer required to handle different types of traffic. MPLS belongs to the packet-switched network family. Because it operates on an OSI model, MPLS is often referred to as layer 2.5 protocol. Its purpose is to provide a consistent data-carrying service to both packet-switching and circuit-based clients. Ethernet frames, SONET, native ATM, and IP packets are all examples of traffic that

  At a quick rate, MPLS is displacing previous technologies. It does away with ATM’s signalling protocol and cell-switching baggage. It also acknowledges that ATM cells are no longer required in the heart of modern networks, as modern networks have evolved.

How Does MPLS Function?

Each data packet is allocated a label in an MPLS setup, and this label is used to make all packet forwarding decisions. Users can now generate without having to check the contents of the packet.

circuits that span many modes of transport and work with any protocol

This property decreases the network’s reliance on a single data connection layer technology, such as ATM (asynchronous transfer mode), Ethernet, or SONET (synchronous optical networking).

MPLS is commonly referred to as a layer 2.5 protocol since it operates on a layer between layer 2 (data link layer) and layer 3 (network layer). As they travel through the network, packet labels are associated with a specified path. The users can specify these paths based on various QoS features and priorities. In other words, MPLS gives customers control over network routing by allowing them to create channels within their network that act like point-to-point connections while remaining flexible.

MPLS Networking Technology Benefits

The way MPLS Network technology works makes it evident that it is designed to boost efficiency while lowering total costs. The following are some more notable

 MPLS Advantages:

MPLS allows users to send data packets over alternative paths via a predefined route, where the packets are clearly prioritised, resulting in higher uptime. This ensures that the system runs smoothly and that vital services are supplied with the highest level of uptime feasible.

MPLS is extremely scalable since it allows organisations to add new locations to the VPN without having to invest in costly hardware infrastructure.

MPLS is a private network that is not accessible to internet users, unlike an internet connection. To ensure that only your traffic crosses the network, MPLS employs a closed user group (CUG).

Users can rest certain that high-priority traffic (such as SIP) can borrow capacity from a lower-priority traffic stream if needed, and vice versa. This maximises bandwidth utilisation.

Users can rest certain that high-priority traffic (such as SIP) can borrow capacity from a lower-priority traffic stream if needed, and vice versa. This maximises bandwidth utilisation.

MPLS Networking Technology’s Drawbacks

MPLS has a significant disadvantage in that network control remains with the service provider. Customers can only set the QoS and how traffic is prioritised; the service provider is responsible for routing data via the network. Furthermore, MPLS is more expensive than internet connectivity when compared.


A leased line is a service contract between a consumer and a provider. The service provider agrees to provide an asymmetric telecommunication line connecting two locations in exchange for a monthly rent from the consumer. Unlike typical PSTN lines, it does not have a phone number. Each line segment is connected to the next. Leased lines can be used for data, the Internet, or voice communication. Others are ringing down services, while others connect two PBXs.

Businesses typically use leased lines to connect their remote offices. Unlike dial-up connections, they are always active. Every year, a leased line is renewed. It can carry both speech and data. The key advantages of leased lines are their privacy and flexibility.

How does it work?

Because internet leased lines are ‘leased’ by the organisation, it can guarantee bandwidth availability to the customer, as the name implies. The client basically rents the plans for high-speed internet access between locations. Because they are often comprised of pure fibre optics, internet leased lines can supply high-speed internet. They work by transmitting light pulses via these connections, and the data they carry can travel at the speed of light. Furthermore, the leased line connection is only for the customer’s use and is not shared with anybody else.

The line speed and the bearer speed are two parts of a Business leased line connection. The upload and download speeds are usually symmetric in nature.

The bearer speed, on the other hand, is the highest speed that the fibre optic cable can achieve. This capability allows you to easily expand your bandwidth as your business demands develop.

Typically, internet leased line plans offer a monthly fixed rate based on the needs of the end consumer. However, this can be a very costly endeavour. As a result, businesses that aren’t as reliant on high-speed internet opt for less expensive solutions like internet broadband through coax or DSL.

Internet Leased Line Connectivity Benefits

In these technology-driven times, it is practically difficult for businesses to survive without an internet connection, regardless of their size. Internet leased lines are an effective way to accomplish this, with three key advantages:

Service Level Agreements:

Another significant benefit of internet leased lines is service level agreements or SLAs. These guarantee your service provider’s minimal level of service, as well as the penalties that the service provider may face in the event of an outage.

Dedicated Internet Access

– Another advantageous feature of leased line connectivity is dedicated internet access. A third party cannot see the connection. This is especially useful during peak hours when internet connections are more likely to be unstable.

High Upload Speeds

– When determining their internet connectivity requirements, organisations frequently ignore upload speeds. The majority of businesses concentrate primarily on network download speeds. The upload speed of an Internet leased line is the same as that of an ADSL connection.

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