SpeedFusion vs. Bigleaf SD-WAN: Which Bonding Tech Is Right? | CSG

If you've started shopping for a bonded internet solution that combines 5G and satellite into one always-on connection, you've probably run into two names: Peplink SpeedFusion and Bigleaf SD-WAN. Both promise to keep your business online when a single connection can't. Both work with Verizon 5G and Starlink. But under the hood, they solve the problem in fundamentally different ways — and the right choice depends on what your network actually needs to do.

This is the vendor-neutral guide we wish existed when we were architecting CSG MultiPath. By the end, you'll know which technology fits your operation and why.

The Problem: Why One Connection Isn't Enough

84% of businesses had a network outage in the last two years. For most companies, the cost of an outage isn't measured in lost speed — it's measured in failed transactions, dropped sales calls, idled crews, and missed SLAs.

The fix sounds obvious: add a second connection. But not all redundancy is equal. There's a meaningful difference between standby failover (one connection runs, the other waits) and bonding (both connections run together). And once you've decided you want bonding, you have to decide what technology actually does the bonding. That's where SpeedFusion and Bigleaf come in.

Failover keeps one connection in reserve. Bonding uses both at the same time.

What Is Peplink SpeedFusion?

SpeedFusion is Peplink's proprietary bonding technology, built into their MAX series of routers. It works at the packet level — meaning it splits each data stream into individual packets and distributes them across all available connections (5G, Starlink, fiber, etc.) simultaneously.

To put the packets back together into a coherent stream, SpeedFusion requires a SpeedFusion endpoint on the other side. That endpoint can be Peplink's cloud service (FusionHub), a SpeedFusion-capable router you operate at your headquarters or data center, or a managed endpoint through your provider.

SpeedFusion splits packets across both connections and reassembles them at a SpeedFusion endpoint.

What SpeedFusion is great at

• Maximum throughput. Because it bonds at the packet level, SpeedFusion can deliver the combined bandwidth of all your connections — true aggregation.
• Sub-second failover. If one connection drops, packets continue flowing through the other without dropping the session. Live calls and VPN tunnels stay up.
•  Flexibility. Peplink gives you fine-grained control over how traffic is balanced — you can prioritize cellular over satellite, set custom weights, or define rules per application. 
• Hardware control. You own the router and can configure it directly. No third-party service required for routing decisions.

What to know about SpeedFusion

• It requires an endpoint. To bond connections, packets need a place to reassemble. Most businesses use Peplink's FusionHub cloud service, which is included as a 1TB trial with new Peplink routers but requires a paid license for ongoing use.
•  The 1TB trial runs out. Once you hit 1TB of bonded data, you'll either purchase a SpeedFusion Connect license to extend it, or fall back to standard failover until the trial resets.
•  Configuration is technical. The routing intelligence is on you (or your provider). SpeedFusion does what you tell it to — it doesn't make application-aware decisions on its own.

What Is Bigleaf SD-WAN?

Bigleaf takes a different approach. Instead of splitting packets, Bigleaf is an application-aware SD-WAN that continuously monitors the health of every connection — measuring latency, jitter, and packet loss every second — and routes each application's traffic over the path that's performing best at that exact moment.

Your router connects to Bigleaf's nationwide cloud of points-of-presence (POPs) through encrypted tunnels, and Bigleaf's cloud handles the routing decisions in real time. The bonding endpoint is built into the service — there's no separate license, appliance, or configuration burden.

Bigleaf monitors both paths in real time and routes each application to the best one.

What Bigleaf is great at

• Application awareness. Bigleaf knows VoIP packets from a Netflix stream. It automatically prioritizes latency-sensitive traffic and dynamically routes around degraded paths — without any manual configuration.
• Zero-touch optimization. There's no SpeedFusion Connect license to renew, no FusionHub to configure, no traffic rules to write. It works out of the box.
• Real-time path quality. Bigleaf doesn't just react to outages — it reacts to degradation. If your 5G starts experiencing jitter, Bigleaf shifts VoIP calls to Starlink before quality suffers.
• Single bill, single throat to choke. Bigleaf is a service, not just a technology. Bonding endpoint, monitoring, and support all come together.

What to know about Bigleaf

• It's not true packet aggregation. Bigleaf doesn't combine bandwidth at the packet level — it intelligently routes flows. For most business applications (VoIP, video, web traffic, SaaS), that's a feature, not a limitation, but if you need raw combined throughput for large file transfers, SpeedFusion will outperform it.
• You're using their cloud. All bonded traffic transits Bigleaf's POPs. That adds a hop, which Bigleaf minimizes through extensive peering, but it's a different architecture than a direct connection.
• Bandwidth tiers are fixed. Bigleaf is sold in plans (e.g., 300/300 Mbps Essentials). If you need more, you upgrade tiers.

Side-by-Side Comparison

Which One Is Right for Your Business?

There's no universal winner here. The right answer depends on what your network is being asked to do.

Choose SpeedFusion if...

• You need to maximize raw bandwidth across multiple connections — for example, a remote production crew uploading 4K video on the move.
• You want direct control over routing rules and have the technical resources to configure them.
• You're deploying mobile or tactical setups where the bonded connection has to survive significant changes in link quality and availability.
• You'd rather own the architecture end-to-end than rely on a third-party cloud.

Choose Bigleaf SD-WAN if...

• Your priority is uptime and quality for VoIP, video conferencing, and other latency-sensitive applications.
• You don't want to manage routing rules or renew bonding licenses.
• You want application-aware intelligence that adapts in real time, not a configuration you have to update yourself.
• You'd rather pay a single monthly fee than juggle hardware licenses and cloud endpoints.

How CSG MultiPath Handles Both

We built MultiPath to offer both approaches because we've seen first-hand that one isn't always the right answer.

MultiPath uses Peplink's MAX BR1 PRO 5G with SpeedFusion bonding (1TB trial included). It's the right choice when you want maximum throughput, deployment flexibility, and direct control.

MultiPath SD-WAN adds Bigleaf SD-WAN on top of Peplink's hardware. You get application-aware routing, automatic VoIP prioritization, and dynamic failover decisions — without the licensing complexity. The bonding endpoint is included.

Both options ship with full outdoor installation, 24/7 support, and unlimited configuration changes through your existing Verizon account. We'll run a site assessment, recommend the right option for your operation, and handle the rest.

Want help deciding between SpeedFusion and Bigleaf for your sites?

Request a site assessment and we'll scope the right MultiPath option for your operation. Most assessments take 30 minutes.