The Internet has become so ubiquitous that we take it for granted. It’s a utility, like gas, water and electricity. It’s always there quietly and efficiently running in the background… until it isn’t.
The Danger of Single Point FailureAny time we’re dependent on one key element, we’re subject to what is called “single point failure.” Your entire business could be running like a well oiled machine, with orders being fulfilled and customers pouring in. It’s high efficiency and high profits. Then, the connection goes down and stays down. Computers do nothing. Point of sale terminals are frozen. Business grinds to a halt.
Somewhere, somehow the Internet has stopped cold. But it’s designed not to do that, right? Indeed it is. The technology behind the Internet was designed by the military to keep functioning during a nuclear attack when whole areas were vaporized. No one cable or router can stop the data flow. It simply re-routes to paths that are still functional. Well, except for that last connection. You, know. The one that hooks your business to your Internet service provider. How many lines is that? That’s right… ONE. What happens when that gets cut? Right again. Service to and from the Internet stops cold.
The Value of Redundancy
Redundancy is what protects you from single point failure. For things that are so critical you can can’t do business without them, you need a backup. When you have a primary connection and a backup you have redundancy
A simple example of redundant connections is found with many home based businesses. As a solopreneur, you probably can’t justify having a second fiber optic or cable service just in case one goes down. But you likely do have redundancy. Your desktop computer is connected through the router and modem to the ISP. Rarely do you lose service, but it does happen. What then? No need to call up and order another service, you already have one on your phone. Simply use the personal hotspot feature with your phone to supply cellular broadband to your computer and you’re back in business.
There are a couple of fine points here. First, you wan’t to get back to your primary service as quickly and you can or you may get overage charges on your cell phone bill. You typically get only so may GBs per month before they start tacking on extra fees. Second, is your primary Internet service a Fixed Wireless Access from the same provider as your phone service. That might be a great money saver but likely not a redundant connection. If the tower you are accessing is off the air, your phone goes dead and your FWA goes dead at the same time. What’s left to do? Pack up the laptop and head for a hotspot. Hopefully that coffee shop has a different ISP and is still Internet ready. Best to check before you settle in and order.
Robust Business Redundancy
Most businesses don’t have the option to flee the office or store and head out for a break to get reconnected at the nearest hotspot. It makes a lot more sense to have redundant service connections with enough speed to keep running no matter what. Also in most offices it isn’t practical to have everyone pair their PC with their smartphone, although that can work for a short period in some cases. It’s better to have a second redundant service available for the network you already use.
What are some things to think about when setting up this redundant connection? Ideally, you want at least automatic failover. That means when one line goes down, the other picks up the load automatically. This is similar to the way a battery backup power supply works. When the line drops, the battery powers an inverter and the computer doesn’t even blink.
Even better than automatic failover is having a dual or multi-port router that can automatically share the load or pick and choose what route to send each packet for best performance. That’s SDN (Software Defined Networking) or SD-WAN (Software Defined Wide Area Network). The beauty of this approach is that instead of one line sitting idle until it is needed, you can make use of all the available bandwidth all the time. Only when one connection goes down does the total bandwidth available get reduced for the duration of the outage.
A good SDN supplier will ensure that you have truly redundant services, but here are a few guidelines if you are going to set this up yourself. First, don’t just have a pair of lines going from your location to your iSP using the same route. Chances are they run in the same bundle. If a backhoe cuts the bundle, you lose all your connectivity at once. Instead, use diverse pathways so that no one disaster can take out all your lines.
You may also want to have different providers for each service. They can be fiber, cable, wireline, fixed wireless, or satellite. At least use two different providers and you may want to consider two different technologies that are unlikely to be affected by a particular outage… be that wire cut, storm, or power loss. It’s valuable to have battery, generator, or solar power backup for your own equipment as well as redundant Internet.
Have you experienced Internet outages or concerned that a sudden loss of service could damage your business? If so, speak with a technology expert and see what redundant Internet options are available for your situation.




