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Unraveling the Internet Myth | Are Outages Really Just 'Best-Effort'?

Driving SD-WAN Adoption in South Africa
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Unraveling the Internet Myth | Are Outages Really Just 'Best-Effort'?

Driving SD-WAN Adoption in South Africa
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If youâve ever had an Internet outage, chances are youâve heard this excuse from your ISP, FNO, or WISP:
âThe Internet is a best-effort service with no guarantees.â
This explanation conveniently shifts the blame onto the nebulous concept of "the Internet" and away from what often turns out to be the real culpritâlast-mile telecommunications. But is it true that the Internet has no guarantees? Or is this just a myth used to mask poor service? Letâs bust it wide open, MythBusters-style.
To understand this myth, we need to go back to the birth of the Internet. Born from ARPANET in the late 1960s, the Internet was designed by researchers and military strategists with one primary goal: resilience.
The core idea was to create a network that could withstand failures, whether due to physical disruptions or technical issues. This is why the Internet uses packet switching and diverse routing protocols like BGP (Border Gateway Protocol).
It was specifically engineered with parallel paths to ensure redundancy. If one route failed, traffic would automatically reroute through alternative paths.
The Internet wasnât designed to failâit was designed to bypass failures.
Now, letâs zoom in on where the problems actually occur: the last mile. This is the connection between a userâs premises and their service providerâs core network. Hereâs why the last mile is NOT the Internet:
Last Mile is Fully Managed
Unlike the open and distributed nature of the Internet, the last mile is a tightly controlled service. ISPs, FNOs, and WISPs own and operate the infrastructure, including fiber, wireless towers, and routing equipment.
Service Levels Are Agreed Upon
Last-mile providers often sign SLAs (Service Level Agreements) with customers, guaranteeing uptime, latency, and repair timelines. Yet, when issues arise, the "best effort" excuse gets thrown around, even though the service is anything but unmanaged.
Data Centres and Breakouts Are Highly Reliable
Most ISPs break out to the Internet through data centres with five-nines (99.999%) uptime. These facilities have redundant power, cooling, and connectivity. Similarly, cloud providers boast high availability across multiple zones and regions.
Robust National and International Infrastructure
Countries often have multiple redundant long-distance circuits and submarine cables. These are managed and monitored to ensure stability and resilience. If one fails, traffic shifts to an alternate route.
Letâs examine why this myth is false:
The global Internet is built on decentralized protocols like BGP. Failures in one path donât affect the overall network because traffic is rerouted dynamically. This design philosophy has made the Internet incredibly resilient, with outages generally limited to specific regions or services.
Most Internet outages arenât caused by the Internet itself but by localized issues in the last mile:
Fiber cuts
Power failures at wireless towers
Equipment malfunctions at customer premises
These problems are entirely within the control of the ISP, FNO, or WISP.
The backbone of the Internetâdata centres and cloud infrastructureâoperates at extremely high availability. For example:
AWS, Google Cloud, and Azure regularly achieve 99.99% or higher uptime.
Tier 3 and Tier 4 data centres, where many ISPs colocate their equipment, also offer near-perfect reliability.
ISPs and last-mile providers often know exactly how long repairs will take, whether itâs a few hours for a cable splice or a day for equipment replacement. Claiming the unpredictability of the "Internet" as the cause of delays is a cop-out.
The excuse that "the Internet is only best effort" is simply a deflection. When examined critically, the Internet itselfâits backbone, protocols, and infrastructureâis a marvel of engineering designed for reliability and resilience.
The real issue lies in the last mile, where:
Redundancy is often absent.
SLAs arenât honoured.
ISPs fail to invest in robust failover mechanisms, such as SD-WAN or secondary circuits.
Businesses and consumers can take steps to protect themselves from last-mile failures and ensure uninterrupted connectivity:
Adopt SD-WAN
SD-WAN solutions, like Fusionâs, offer:
Dynamic failover between multiple last-mile links.
Packet-level redundancy to prevent session drops during outages.
Diversify Connectivity
Use multiple ISPs or redundant technologies (e.g., fiber and LTE) to eliminate single points of failure in the last mile.
Demand Transparency
Hold providers accountable for their SLAs and demand transparent reporting on outages and repair times.
The Internet isnât the problemâitâs the solution. Its design is inherently resilient and reliable, with robust failover mechanisms built into its DNA. The real culprit behind outages is often the last mile, where ISPs and FNOs fail to deliver on their promises.
Itâs time to stop blaming the Internet and start addressing the real issues in last-mile telecommunications. By adopting modern solutions like SD-WAN and demanding better accountability from providers, businesses and consumers alike can enjoy the true benefits of the Internet without falling victim to outdated myths.
Ronald Bartels ensures that Internet inhabiting things are connected reliably online at Fusion Broadband South Africa - the leading specialized SD-WAN Last Mile provider in South Africa. Learn more about the best SD-WAN in the world: đContact Fusionâïž