Broadband Internet Bonding Explained: How Speedify Combines Two Internet Connections for Business

With Speedify You Get the Best Broadband Bonding Service in Terms of Performance and Cost – Combine Starlink, 4G, 5G, DSL and Other Connections Easily

A business broadband line that is fast on paper still fails in practice: throttled at peak hours, or simply not enough for the number of people relying on it. Adding a second line does not help if only one carries traffic at a time.

Speedify is software that combines broadband with other internet connections so they carry traffic together (internet bonding), which is what turns two mediocre lines into one usable one. That takes at least two internet connections: on a single connection Speedify works as an encrypted VPN and cannot make that connection faster or stop it from dropping.

This guide covers what bonded broadband and bandwidth bonding mean, and how bonding fixes a slow connection.

With Speedify, your internet stays on when one connection fails.

PRIMARY BACKUP WI‑FI CONNECTED 4G / 5G STANDING BY DROPPED LOST CONNECTION CELLULAR TAKING OVER SPEEDIFY SWITCHES YOU STAY ONLINE NO DROPPED CALLS, NOTHING TO RECONNECT
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CallsStay up
DownloadsKeep going

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How Speedify combines internet connections on any hardware

A walkthrough of the protocol, the per-packet distribution model, the failover logic and the encryption layer in one detailed explainer, plus the architecture and engineering tradeoffs that make Speedify different from a load balancer or a regular VPN.

Get started with Speedify for your business

Speedify offers three commercial paths. They work together, and most enterprise customers use two or more.

01

Speedify Teams

Faster, more reliable internet for everyone in your business, managed from one dashboard.

Speedify on every supported OS for every team member


Centralized dashboard for billing, user provisioning, and usage analytics


CSV import/export and a RESTful management API

View plans →

02

Speedify for Routers

Run Speedify on hardware you already own, or buy a Powered by Speedify router with it preinstalled.

License for supported OpenWrt routers


Powered by Speedify hardware lineup ready to deploy out of the box


Miri, GL.iNet and other partner models


Covers every device on the network, with no per-device install

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03

Embed Speedify into your product

Add Speedify's ability to combine internet connections to your own product. For OEMs, software vendors and hardware manufacturers that ship connectivity as a feature of their own product line.

A · DIY

Build it yourself with the Speedify SDK.

Integrate Speedify into your iOS, Android, Windows, macOS, Linux or QNX product. Full developer documentation, sample code and supported integration paths. Your team owns the build, and the Speedify SDK handles combining the internet connections.

Developer Docs →

B · CUSTOM ENGINEERING

Have the Speedify team build it for you.

The Speedify engineering team delivers custom integration work, deployment architecture and protocol-level customization, built to your spec and your timeline by the people who built Speedify.
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What Is Bonded Broadband and What Is Bandwidth Bonding?

Bonded broadband refers to combining multiple internet connections into a single, high-performance service that delivers increased bandwidth by aggregating speeds from the connections involved, for faster uploads and downloads.

Bandwidth bonding allows users to simultaneously tap into the bandwidth of multiple internet connections in order to get a higher bandwidth. The connections may include low-cost DSL and cable, satellite (including Starlink), 4G and 5G cellular connections.

Fixing Slow Broadband Connections with Broadband Bonding

Broadband bonding takes two or more separate Internet connections and combines them into a single, faster connection. You can combine any type of connections together.

You can take a cable Internet connection and combine it with a DSL connection to get a faster connection than either provider offers on its own.

When you use broadband bonding, your computer, and all of your connected devices, will all treat both connections as a single connection. Speedify publishes up to 95% of the combined upload and download speed of the connections it combines.

This means fewer buffering videos and fewer connection problems, because one slow or failed connection no longer decides what you get. Neighbors taking up bandwidth on a shared cable line matter less when a second connection carries part of the traffic.

What Does Bonding Mean on a Router?

You can get a bonded internet connection on a router by combining two or more internet connections together. Some routers have multiple ports to support internet connectivity than just the regular WAN wired Ethernet port. They can have multiple Ethernet ports to connect to the Internet, cellular slots where you can insert SIM cards and also USB ports to connect mobile phones or personal hotspot devices.

These bonding routers combine all these internet sources into one faster, more reliable connection. An example of such a bonding router is the Miri X510, powered by Speedify.

Why Use Powered by Speedify on Routers That Combine Internet Connections

It used to be that if you wanted to do broadband bonding you had to get expensive hardware like a bonding router. The bonding router would be connected to both of your broadband connections and take care of the technical bonding.

But, these routers are hard to find, difficult to configure, and too expensive for many businesses and families to afford. If there is ever an issue with a connection, you have to troubleshoot the problem yourself or have an IT expert who can help you.

Speedify is a software-based solution for broadband bonding. Instead of buying an expensive piece of hardware, you can use Speedify on iOS, Android, Windows, Mac, Linux and OpenWrt devices. Speedify works to manage and monitor the quality of your Internet connections. It takes care of the broadband bonding. If one connection goes offline, it automatically reroutes all Internet activity through the remaining connection until the lost connection comes back online.

Speedify takes care of everything related to broadband bonding automatically. You don’t need an IT expert to use Speedify for broadband bonding.

Other Advantages of Using Speedify to Combine Internet Connections

Besides broadband bonding, Speedify is an encrypted VPN service for families and businesses.

Speedify uses DTLS 1.2 with AES-256-GCM or ChaCha20-Poly1305 to encrypt all of your traffic, with little effect on speed. Speedify keeps no activity logs of the sites you visit, although it does record connection metadata such as IP address, device ID, connection time and data used.

If you want a faster Internet connection that is easy to set up and manage and doesn’t require a huge initial investment, Speedify is built for that.

How Broadband Bonding Software Works

Broadband bonding (also known as channel bonding or link aggregation) takes two or more separate Internet connections and combines them together. The result is a single, faster connection. Broadband bonding is different from load balancing, as it works at the network packet level.

Real world broadband bonding setups usually include a bonding modem or router. This dedicated hardware device is usually expensive and doesn’t give enough flexibility. You have to install it in a fixed place; you can’t just carry it with you when traveling, for example. 

However, real world broadband bonding can also be done with software only. You use a broadband bonding software program or an app that combines connections together. So, you’ve got the same functionality right on your device, no other hardware needed. The same idea is behind hybrid access software for your laptop.

Better yet, in the case of broadband bonding software, you can combine any type of connections together. And there’s no limit on the number of bonded connections outside of the device’s network adapters.

Speedify Business Solutions

Speedify Teams

Get faster uploads and downloads and a more reliable internet connection for all the people and devices in your business.

Speedify for Routers

Run Speedify on your OpenWrt, GL.iNet or Miri router to combine Wi-Fi, 4G/5G cellular, Ethernet, Starlink and satellite internet connections for every device on your network.

Speedify Embedded Solutions and Integrations

Add Speedify to your own app or hardware with the Speedify SDK. Your product then combines internet connections, fails over automatically when one drops, and encrypts the traffic, using the same technology as the Speedify app.