What are the common network problems that SD-WAN can handle?


Compared to traditional hub-and-spoke WANs connected by MPLS links, SD-WANs provide greater operational flexibility and reliable performance, which requires more bandwidth for internet bounds. Suitable for handling type application traffic. In the era of ubiquitous cloud connectivity, SD-W

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Problem # 1: Ensure application performance
For years, MPLS has provided the best low-latency technology for carrying WAN traffic. MPLS routers were forwarding traffic through a default route without time-consuming routing table references by referencing labels in packet headers. However, as companies and organizations have undergone digital transformation, network traffic has become heavier and more complex, and MPLS networks have become significantly less efficient and economical.

In order to properly handle cloud and internet traffic, MPLS-based WANs typically need to backhaul traffic through a headend, such as a data center, to enforce policies, but this process allows There will be a noticeable delay. This backhaul bottleneck significantly reduces employee productivity by significantly reducing the reliability of virtual and cloud applications.

There is also a common workaround of adding a dedicated internet access line to offload traffic from MPLS to network transport with higher bandwidth, but this poses its own problems. Bandwidth may not be fully utilized. This can also be an increase in cost due to managing multiple different plans and navigating the expensive and time consuming MPLS provisioning process.

What are the benefits of SD-WAN : SD-WAN technology allows you to combine multiple types of links within a network overlay to take advantage of broadband broadband Internet in addition to or as an alternative to thinner MPLS connections. I will. Applying QoS and WAN Op in combination with automated cloud-on-ramp may improve your SaaS, PaaS, and IaaS experience. In addition, SD-WAN's integrated edge security capabilities can provide multi-layered threat protection optimized for cloud-connected environments with little degradation of the user experience compared to the MPLS backhaul paradigm. I will.

Issue 2: Maintaining visibility and control
Traditional WANs were built for the pre-cloud era, when most of the application traffic went through corporate data centers via IaaS and SaaS services owned and operated by external providers. It was not exchanged. As a result, traditional WANs have limited ability to visualize network status at any given moment and to control network performance and data-related threats.

These shortcomings are probably the most obvious in terms of security. MPLS WANs do not have a firewall feature, which is only secure because traffic is blocked from the public internet. Additional point solutions, including firewalls, must be managed separately. Addressing the lack of integration and AI means generating a large number of alerts, which is impractical and results in increased risk.

On the other hand, the greater lack of visibility causes application performance issues. In the event of severe network congestion due to the proliferation of VoIP and video conferencing by remote employees, within the limits of traditional WANs that do not have the required application awareness and real-time intelligence. It's difficult to deal with.

What are the benefits of SD-WAN : SD-WAN provides comprehensive visibility and control by centrally managing network and security management with software. SD-WAN provides performance by leveraging multiple integrated security implementations (from firewalls to IDS / IPS platforms) while identifying and routing traffic on WAN links according to programmable and scalable policies. Protect your application flow without compromising it. In addition, broader protection is beginning to be achieved by incorporating SD-WAN into the larger Security Access Services Edge (SASE) architecture.

Issue 3: High cost management
MPLS connections are much more expensive than comparable broadband internet, mobile phone, or satellite connection plans. Not only does it require expensive bespoke router infrastructure, but the amount of bandwidth available at high cost is not enough to reliably run real-time applications and chatty cloud services.

また、コストは別の面でも発生します。レガシーWANインフラストラクチャとセキュリティアーキテクチャの複雑さ、さまざまな接続プランの管理、ブランチオフィスでの移動、追加、変更を実行する際の煩雑さなど、これらすべてが大きなオーバーヘッドを生み出します。

Obsolete security models also mean that the likelihood of data breaches increases over time. End users who are dissatisfied with the constant backhaul of WAN traffic may rely on insecure Shadow IT applications.

What are the benefits of SD-WAN : SD-WAN bonds multiple network transport modes to deliver real-time TCP applications. MPLS can still play a role in the SD-WAN architecture, but the WAN as a whole is no longer within its clear limits due to the existence of other more economical bandwidth sources. You no longer have to dare to operate MPLS. SD-WAN technology aggregates bandwidth by gathering all these types of connectivity under the same umbrella.

Problem # 4: Struggling to achieve both scalability and flexibility
Moving, adding, and modifying is a complex task in a traditional WAN. This is due to its basic reliance on hardware-defined architectures and security considerations. In addition, provisioning carrier-based MPLS can take months. Even connecting a new branch to your company's WAN can be a big project.

For example, the location may require specialized hardware and an on-site team to configure and manage it. These requirements are often unrealistic.

This is because every organization has a limited number of engineers and a tight IT budget. As a result, WAN cannot be scaled to meet evolving network and security challenges.

What are the benefits of SD-WAN : SD-WAN zero-touch provisioning enables businesses and organizations to get up and running WAN connections in branches in minutes instead of days. A secure internet breakout at these sites means secure and high-performance application access, as well as a promising WAN architecture for a wide range of applications and desktops, including on-premises, web, virtual, cloud, and SaaS. It means that you can achieve. Finally, SD-WAN policies can be updated seamlessly as circumstances change.

How SD WAN works

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