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What is Bondix? WAN bonding for cellular routers
Bondix is WAN bonding software that combines several internet connections into one fast, resilient link. It runs on your router and works with any mix of connections: 5G, 4G, fibre, DSL, cable, Wi-Fi as WAN, or satellite.
Bondix is a brand of the German software company SIMA GmbH. Its bonding protocol, S.A.NE (Simple Aggregation of Networks), splits your traffic across every available connection at once, then rebuilds it at a Bondix server. The result is one connection, one public IP, and far more uptime than any single line can give.
How Bondix works
The Bondix client runs on a compatible router at your site. It monitors every WAN connection you plug in and treats each one as a channel. When traffic leaves the router, Bondix fragments it and sends the pieces across all channels at the same time.
Those pieces travel to a Bondix server. The server reassembles them in the correct order, then sends the traffic on to the internet as a single stream. Return traffic follows the same path in reverse. To the wider internet, your site looks like one connection from one IP address, not several separate lines.
This is true bonding, not simple failover. A failover router uses one line at a time and switches when a line drops. Bondix uses every line together, so a single download, video call, or live stream can draw on the combined bandwidth of all channels. If one channel weakens or fails, the others carry on without dropping the session.
Bondix also smooths latency across uneven links. It keeps interactive traffic on the fastest channel and spreads bulk traffic across the rest. This matters when you bond very different connections, for example satellite and 5G, because it stops one slow link from dragging down the whole tunnel.
The single-IP breakout, explained
Every bonded connection breaks out at the Bondix server with one public IP address. This single-IP breakout is the reason Bondix works so well for remote access and resilience.
With a standard multi-SIM router, each SIM has its own carrier IP, and most sit behind carrier-grade NAT. Inbound VPNs, remote management, and hosted services all struggle in that setup. When a line fails and the router switches SIM, the IP changes and live sessions drop.
Bondix removes that problem. Your services always see the same fixed public IP, whichever underlying line is carrying the data. Therefore a VPN tunnel, a remote desktop session, or a live video feed stays up while connections fail and recover beneath it. You get aggregated bandwidth, automatic resilience, and a stable inbound address in one system.
Where the Bondix server runs
The server side is flexible. You can use Bondix cloud hosting, run your own server, or combine both.
- Cloud hosted: connect to a managed Bondix server through one of thousands of points of presence across many countries. There is nothing to build or maintain.
- Self-hosted: run the Bondix server yourself from a virtual appliance, on-premises or in your own cloud. You keep full control of the breakout IP and any inbound port forwarding.
- Hybrid: combine both for extra redundancy, and move between them as your needs change.
For most event, backup, and remote-site deployments, cloud hosting is the fastest way to get a bonded connection live.
Bondix plans explained
Bondix is licensed per active bonded connection. Plans differ on a small number of practical points, not on features, because every plan includes the full bonding technology.
When you choose a plan, these are the things that change:
- Bonded throughput: the maximum combined speed of the bonded link.
- Number of bonded links: how many WAN connections you can bond into a single tunnel.
- Monthly data allowance: the fair-use data included on hosted plans each month.
- Dedicated IP: a fixed public IP for your breakout, included on hosted plans.
- Server hosting: whether the Bondix server is hosted for you, or you run your own.
- Port forwarding: inbound port forwarding needs your own server or a partner-hosted server.
- Term: short passes for temporary sites and events, or monthly and annual subscriptions for permanent installs.
Our hosted plans form a simple ladder. Lighter plans suit remote monitoring, telemetry, and low-bandwidth resilience, where reliability matters more than raw speed. Mid plans add throughput and data for fixed sites, transport, and site-to-site links. The Ultimate plan sits at the top, with a 500 GB monthly allowance for high-bandwidth, always-on work such as live streaming and busy multi-day events.
For a one-off job you do not need a rolling subscription. Short-term passes bond in exactly the same way and cover only the days you are on site. Call our team on 0300 124 6181 to match a plan to a specific deployment.
Which Teltonika routers work with Bondix
Bondix runs as a client package on RutOS. It is available across the current Teltonika ranges we stock, including the RUT2, RUT9, RUTX, RUTM, and RUTC families. The router needs enough WAN inputs to bond, whether those are cellular modems, an Ethernet WAN, or Wi-Fi as WAN.
| Router | Typical bonding role |
|---|---|
| RUTX50 | 5G and a wired broadband WAN bonded into one resilient link with a single IP. |
| RUTM52 | Two independent 5G modems bonded inside a single box, ideal for high-bandwidth mobile work. |
| RUTM30 | Compact 5G unit that works well on its own or as a bonded building block in a multi-router setup. |
| RUT956 | 4G Cat 4 with dual SIM, a lower-cost choice for lighter bonded sites and telemetry. |
Case study: live event streaming from a single RUTM52
A production company needs reliable streaming from an outdoor event with no fixed line. They use one Teltonika RUTM52 and the Ultimate plan.
The RUTM52 carries two independent 5G modems. Fit a SIM from a different network in each modem, so the box is not tied to one operator’s coverage on the day. Bondix then bonds both 5G channels into one tunnel and breaks out at the Bondix server with a single public IP.
The encoder points at one connection and one IP. It never sees two SIMs or two networks. If one network gets congested as the crowd arrives, the other channel carries the stream, and the bond rebalances without dropping the feed. The 500 GB Ultimate allowance covers a full multi-day event at broadcast bitrates.
One router, two networks, one resilient IP. There is no rack of bonding hardware and no separate failover box to manage.
More ways to use Bondix
Bond three RUTM30 units into a corporate WAN
You can bond several routers together for a bigger pipe. Take three Teltonika RUTM30 units. One acts as the head unit and runs the Bondix client. The other two feed their 5G connections into the head unit over Ethernet, using its WAN port and second port as wired inputs.
The head unit bonds all three 5G paths into one tunnel and breaks out with a single IP. Connect its output to the WAN port of your corporate switch. The office now has one bonded internet feed built from three cellular channels. As a result, this works well as pre-Ethernet connectivity while a fibre install completes, or as a high-speed backup WAN if the primary line fails.
Bond wired broadband and 5G on a RUTX50
A single Teltonika RUTX50 gives you resilient broadband on its own. Plug your wired broadband into the WAN port and add a 5G SIM. Bondix bonds the two into one tunnel.
Both links carry traffic together, therefore you get more usable bandwidth day to day. The whole connection breaks out with one IPv4 address. If the broadband drops, the 5G channel holds the same IP and the same sessions, so a VPN or remote service stays up. You get true 5G backup without juggling separate IP addresses or adding a second failover router.
Frequently asked questions
Does Bondix combine connections or just fail over between them?
It combines them. Bondix uses every connection at once and pools the bandwidth, so even a single stream or download can use the total speed. Failover is built in too, because if a line drops, the rest carry on without breaking the session.
Do all the bonded connections share one IP address?
Yes. Every bonded link breaks out at the Bondix server with one public IP, whatever mix of lines sits underneath. That single IP is why inbound VPNs, remote access, and hosted services keep working while individual connections fail and recover.
Which connections can I bond?
Any mix of WAN types. You can bond 5G, 4G, fibre, DSL, cable, Wi-Fi as WAN, and satellite in the same tunnel. Bonding different networks and different carriers is what gives you real resilience.
Do I still need a fixed IP SIM?
No. The Bondix breakout gives you a fixed public IP already, so you do not need a fixed IP SIM on each modem for inbound access. A fixed IP SIM still has its place on single-SIM routers that are not bonded.
Which Teltonika routers support Bondix?
Bondix runs on current RutOS routers across the RUT2, RUT9, RUTX, RUTM, and RUTC ranges, including the RUTX50, RUTM52, and RUTM30. Any router with enough WAN inputs to bond will work. Call our UK-based technical support team on 0300 124 6181 if you want a model checked for a specific plan.
Can I use Bondix for a short event and then stop?
Yes. Short-term passes bond exactly like the subscription plans and cover only the days you need. That suits events, outside broadcasts, and temporary sites, without committing to a monthly plan.
Related products and further reading
Explore our Teltonika 5G router range, including the RUTX50 and RUTM30. Pair a bonded setup with the right aerials from our 5G antenna range. To understand the wider toolkit, read our guides on VPNs on cellular routers, eSIM routers, and Teltonika RMS for remote management at scale.