MPLS vs Ethernet: Choosing the Right Network Solution

For businesses with multiple locations, establishing a reliable and secure network is a foundational requirement. Two of the most common solutions for this are Multiprotocol Label Switching (MPLS) and Ethernet.

While both can connect your sites, they operate differently and offer distinct advantages in performance, cost, and scalability. This article will compare MPLS and Ethernet to help you determine which networking solution is the right fit for your organization's needs.

What is MPLS?

Multiprotocol Label Switching (MPLS) is a networking technology that directs traffic across a private wide area network (WAN). Unlike routing on the public internet, which relies on complex IP address lookups at every hop, MPLS uses a simpler labeling system to forward data packets efficiently.

Think of it as a dedicated, private highway for your company's data. A carrier pre-determines the most efficient path for your traffic, ensuring it travels quickly and securely between your locations. Key characteristics of MPLS include:

• Private and Secure: Traffic runs on a carrier's private infrastructure, isolated from the public internet, which provides a high level of security.
• Guaranteed Performance: MPLS supports Quality of Service (QoS), allowing businesses to prioritize critical applications like VoIP or video conferencing to ensure they run smoothly.
• High Reliability: Service providers offer Service Level Agreements (SLAs) that guarantee specific levels of uptime, latency, and packet delivery.
• Managed Service: The network is managed by the telecom provider, which can simplify operations for your IT team.

What is Ethernet?

Ethernet is a familiar technology most known for connecting devices within a local area network (LAN). However, carriers also offer Ethernet WAN services, which extend this technology to connect business sites across different geographical areas. Delivered typically over fiber optic cables, it provides a high-speed, dedicated connection between your locations.

Unlike MPLS, which operates as a fully managed service with built-in routing intelligence, Ethernet provides a more direct, Layer 2 connection. Key characteristics include:

• High Bandwidth: Ethernet services are known for their high-speed capabilities, with bandwidth options that can easily scale from 10 Mbps to over 100 Gbps to meet growing demands.
• Cost-Effectiveness: Leveraging standardized equipment and widespread infrastructure makes Ethernet a more budget-friendly alternative for high-bandwidth connectivity.
• Simplicity and Control: Because it's a Layer 2 service, your IT team has more control over the network routing (Layer 3), using familiar and straightforward technology.
• Flexible Configurations: It supports various network setups, such as point-to-point (connecting two sites) or point-to-multipoint (connecting a central office to multiple branches).

MPLS vs Ethernet: Key Differences

While both technologies connect your business locations, their underlying mechanics create important distinctions in performance, management, and cost.

1. Network Layer and Management

MPLS operates at what's often called "Layer 2.5," where the provider manages the routing and traffic paths for you. This creates a hands-off experience for your IT team.

Ethernet, in contrast, is a Layer 2 service. It provides a direct data pipe, giving your team full control over the Layer 3 routing and network configuration.

2. Performance and Quality of Service (QoS)

A key feature of MPLS is its native support for Quality of Service (QoS). The carrier can prioritize specific traffic, like voice or video, ensuring consistent performance for critical applications.

Ethernet services do not inherently include QoS. While you get high bandwidth, managing traffic priority is up to your own equipment and configuration.

3. Scalability and Cost

Ethernet is generally more cost-effective, particularly when high bandwidth is required. Scaling your bandwidth up is often simpler and less expensive.

MPLS can be more costly, as the price reflects a fully managed service with performance guarantees. Bandwidth upgrades can also be more complex and expensive to implement.

4. Security

Because MPLS traffic is isolated from the public internet on a private carrier network, it offers a high level of built-in security.

Ethernet provides a private line, but securing the data that travels over it is your responsibility. This often involves implementing encryption like IPsec tunnels.

Benefits of MPLS for Enterprises

For organizations that depend on consistent application performance, MPLS offers several distinct advantages. It's a good fit for businesses that need strong performance guarantees and a hands-off approach to network management, providing benefits such as:

• Predictable Application Experience: With built-in Quality of Service (QoS), MPLS ensures that critical applications like VoIP and video conferencing receive the priority they need. This results in a stable and reliable user experience, free from jitter or lag.
• Reduced IT Overhead: Since the service provider manages the network infrastructure and traffic routing, your internal IT teams are freed up to focus on other strategic initiatives instead of day-to-day network maintenance.
• Guaranteed Uptime: Service Level Agreements (SLAs) provide contractual assurances for network availability and performance metrics, which is critical for maintaining business continuity.

Advantages of Ethernet for Businesses

For businesses that prioritize high-speed connectivity and direct network control, Ethernet presents a compelling set of benefits. It's an excellent choice for organizations with the in-house expertise to manage their own network traffic.

• Greater Bandwidth for the Price: Ethernet typically delivers more bandwidth per dollar compared to MPLS. This makes it a strong option for data-heavy operations like large file transfers or connecting to cloud services.
• Simplified Network Management: Because it uses standard Layer 2 protocols, your IT team can manage routing and network policies with familiar tools and expertise, providing greater autonomy.
• Flexible and Rapid Scalability: Adjusting your bandwidth is often faster and more straightforward with Ethernet, allowing your network to grow with your business without significant provisioning delays.

Choosing Between MPLS and Ethernet

Deciding between MPLS and Ethernet comes down to your organization's specific priorities for performance, cost, and control. The right choice depends on what you value most in your network.

1. When to Choose MPLS

MPLS is the superior option if your business cannot tolerate any performance degradation for critical applications. It is built for organizations that require a stable, hands-off network with performance guarantees.

Consider MPLS if your operations depend heavily on real-time services like VoIP or video conferencing, or if you need a fully managed solution to free up your IT team.

2. When to Choose Ethernet

Ethernet is a better fit for businesses that need high bandwidth at a lower cost and have the technical staff to manage their own network routing. It offers more direct control and flexibility.

Opt for Ethernet if your primary need is high-speed data transfer, such as for cloud connectivity or large file sharing, and your budget is a key consideration.

3. Considering a Hybrid Approach

Many modern businesses find that neither option perfectly fits all their needs. A hybrid network, often managed with SD-WAN technology, can offer a practical solution.

This approach might use MPLS for headquarters or critical sites that require guaranteed performance, while using more affordable Ethernet or broadband connections for branch offices.

Final Thoughts on MPLS and Ethernet

The decision between MPLS and Ethernet ultimately hinges on your organization's priorities. There isn't a single "best" choice, only the right fit for your specific operational needs, technical resources, and budget.

If your business requires guaranteed performance for critical applications like VoIP and a hands-off, managed service, MPLS remains a powerful option. It offers reliability and built-in security through a private network.

Conversely, if high-speed bandwidth at a lower cost is the main driver, Ethernet provides excellent value and gives your IT team direct control over network routing. As businesses evolve, many find a hybrid approach using both technologies provides the most effective solution.

Need Help Managing Your Network? Lightyear Can Help

Whether you decide on MPLS, Ethernet, or a hybrid network, Lightyear simplifies the entire process from procurement to payment. By automating network service procurement and inventory management, enterprises using our platform save over 70% in time and 20% in costs.

Schedule a demo or get started with our questionnaire today.

Frequently Asked Questions about MPLS vs Ethernet

Can I get MPLS-like performance over an Ethernet connection?

Yes, often by using SD-WAN technology. An SD-WAN overlay on an Ethernet circuit can provide intelligent traffic routing and prioritization for key applications, mimicking the Quality of Service (QoS) benefits traditionally associated with MPLS, but with greater flexibility.

Is Ethernet replacing MPLS?

While many businesses now favor Ethernet for its cost and bandwidth, MPLS is not obsolete. It remains the top choice for organizations needing guaranteed uptime and performance for sensitive applications, such as in finance or healthcare, where reliability is non-negotiable.

Which is better for connecting to the cloud?

Ethernet is typically better for cloud access. It offers the high bandwidth needed for data-intensive cloud applications at a more affordable price point. Many cloud providers also offer direct Ethernet connections into their platforms for optimized performance and security.