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04 / Diversity
Backup connectivity
A second path that is actually separate. Licensed fixed wireless, business 5G, cable or a second fiber entrance, designed so a single cut cannot take the site down.
The short answer
Reviewed September 2026
Backup connectivity is a second internet circuit that fails over automatically when the primary goes down. To actually protect you it must be physically diverse (different carrier, different technology or different path into the building) because two fiber circuits in the same conduit fail together. Business 5G, licensed fixed wireless and cable are the most common diverse paths.
Typical options
Business 5G · licensed fixed wireless · cable DIA · second fiber entrance
Typical monthly cost
$20 – $350 for 5G, cable or wireless · $400+ for fiber
Install interval
Days for 5G · 2–4 weeks for cable or fixed wireless
Failover
Automatic via SD-WAN or dual-WAN router; BGP for same-IP failover
What it is
A backup circuit is only as good as its independence from the primary. We classify diversity in three layers: carrier diversity (a different provider), path diversity (different conduit and building entrance) and technology diversity (wireless instead of fiber). Business 5G and licensed fixed wireless have no conduit to share, which is why they are the honest answer for most sites. Failover is handled by an SD-WAN appliance or dual-WAN router, or by BGP if you need to keep the same IP addresses.
When it is the right choice
Any location where an outage stops revenue or care: retail, clinics, manufacturing, warehouses and any office running cloud phones. If your primary circuit has never gone down, that is luck, not design.
What we compare
Whether the backup path is truly diverse (we ask carriers for route maps and entrance details), sustained throughput under failover, monthly cost, data caps on wireless plans, failover method and time, and whether the same vendor can manage both circuits.
Carriers we quote
Verizon 5G Business Internet, AT&T fixed wireless, Comcast Business and Spectrum Business cable, licensed fixed-wireless providers in your market, Granite and BCN for managed multi-carrier failover, and Starlink where nothing else reaches.
See all carriers
Typical pricing
What a backup path usually costs
A backup circuit does not have to cost what the primary does. Business 5G typically runs $50–$250 a month with setup from about $35 to $500; licensed fixed wireless $100–$350 a month with $300–$1,000 of setup; a cable or broadband backup $20–$200 a month; and a second dedicated circuit $400–$1,000-plus, which is the dedicated internet table with a route-diversity requirement attached. Size the backup to what the business needs to keep running during a realistic repair window, not to the primary’s headline speed.
| Option | Typical monthly | Setup |
|---|---|---|
| Business 5G / LTE | $50 – $250 | $35 – $500 |
| Licensed fixed wireless | $100 – $350 | $300 – $1,000 |
| Cable / broadband backup | $20 – $200 | $0 – $200 |
| Second dedicated circuit | $400 – $1,000+ | $0 – $500+ (build if off-net) |
Industry benchmark ranges for US quotes on 36-month terms, 2025–2026. Reviewed September 2026. Your address, term and whether a carrier is already in the building move the number, and that is exactly what we quote.
Learn the lingo
Backup Connectivity terms, explained plainly.
The words carriers use in quotes and contracts, and what they mean for your bill. Ask us anything we missed.
What is a diverse path?
A route into your building that shares no physical infrastructure with your primary circuit (different conduit, different street entrance, ideally a different carrier central office). Two circuits from two carriers that ride the same conduit for the last 200 feet are not diverse.
What is failover?
The automatic switch from a failed primary circuit to the backup. A dual-WAN router or SD-WAN appliance detects the failure and reroutes traffic in seconds; with BGP, your public IP addresses move with it so hosted services and VPNs stay reachable.
What is SD-WAN?
Software-defined WAN: an appliance and cloud controller that steer traffic across multiple circuits by application, monitor each path continuously, and fail over without user intervention. It is the standard way to run a primary fiber circuit with a 5G or cable backup.
What is fixed wireless access?
Internet delivered by a radio link from a nearby tower or rooftop to an antenna on your building. Licensed fixed wireless uses reserved spectrum and carries an SLA like fiber; business 5G uses the carrier’s mobile network at lower cost. Neither shares a conduit with fiber.
Is 5G good enough for a business backup?
For most sites, yes. Business 5G plans from Verizon and AT&T deliver 100–300 Mbps with no data caps on business tiers, install in days and cost a fraction of a second fiber circuit. Check sustained throughput at your address and whether the plan is capped before relying on it.
What is a dual-WAN router?
A router with two internet ports that monitors both connections and switches traffic to the backup when the primary fails. It is the simplest failover device for a single site; SD-WAN adds application steering and central management across many sites.
Can I keep the same IP address during failover?
Only with BGP, where you announce your own IP block over both circuits, or with an SD-WAN service that terminates traffic in the cloud and presents a stable public IP. With a plain dual-WAN router, your public IP changes on failover and inbound connections must reconnect.