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06 Numbers and Powers

Managed Network Services: What They Are & How They Work

Card No. 06·39514 · Updated · Standard formula, shown below

The calculator on this card is switched off while it is checked. The formula is below, and the worked example shows how to do the sum by hand.

Managed network services are a model where a business outsources the operation, monitoring, and maintenance of its network infrastructure to a third-party provider. Instead of buying and managing routers, switches, firewalls, and WAN links yourself, you pay a monthly fee and the provider handles design, deployment, 24/7 monitoring, troubleshooting, and upgrades. This article explains how managed network services work, what they cost, how to choose a provider, and common pitfalls to avoid.

Formula

The calculator above estimates the value of managed network services by comparing your current monthly spend on network infrastructure (including internal IT labor) with a typical managed service fee. The formulas are:

  • Cost per site = Monthly budget ÷ Number of sites
  • Value of IT hours saved = Hours of IT time per month × $50 (assumed hourly cost of internal IT)
  • Total monthly value = Monthly budget + Value of IT hours saved

Where:

  • Monthly budget = your current monthly spend on network hardware, software, and support (in USD)
  • Number of sites = how many locations your network spans
  • Hours of IT time = average hours per month your internal staff spend on network tasks

Worked Example

Using the defaults: Monthly budget = $5,000, Number of sites = 5, IT hours = 40.

  • Cost per site = 5000 ÷ 5 = $1,000 per site
  • Value of IT hours = 40 × $50 = $2,000
  • Total monthly value = 5000 + 2000 = $7,000

So if you’re spending $5,000 a month on network hardware and support, plus 40 hours of internal IT time (valued at $50/hour), the total value of your current setup is $7,000 per month. A managed service provider charging less than that could be cost-effective.

What Are Managed Network Services?

Managed network services (MNS) are a subset of managed IT services focused specifically on the network layer. A provider typically takes over:

  • Network design and architecture
  • Procurement and configuration of routers, switches, firewalls, and wireless access points
  • 24/7 monitoring and alerting
  • Patch management and firmware updates
  • Security management (firewall rules, VPN, intrusion detection)
  • Performance optimization and reporting
  • Help desk support for network issues

You can outsource the entire network (often called Network as a Service, or NaaS) or just specific parts like WAN management or security. The provider uses software-defined networking (SD-WAN) and cloud management platforms to deliver services remotely.

How It Works

Most managed network services follow a similar delivery model:

  1. Assessment: The provider audits your existing infrastructure, bandwidth needs, and business goals.
  2. Design and deployment: They design a network topology, procure hardware, and configure it on-site or virtually.
  3. Monitoring: Network devices send telemetry to the provider’s management platform, which tracks uptime, latency, and errors.
  4. Alerting and response: When an issue is detected, the provider’s NOC (Network Operations Center) opens a ticket and resolves it remotely or dispatches a technician.
  5. Reporting: You receive monthly reports on uptime, bandwidth usage, and security events.
  6. Continuous improvement: The provider recommends and implements upgrades, such as adding bandwidth or updating firewall rules.

Many providers use a subscription model with a fixed monthly fee per site or per user. Some offer usage-based pricing for bandwidth or number of devices.

Benefits and Drawbacks

Benefits

  • Predictable costs: A flat monthly fee replaces unpredictable hardware failures and emergency IT calls.
  • Access to expertise: You get certified network engineers without hiring full-time staff.
  • 24/7 coverage: Networks are monitored around the clock, reducing downtime.
  • Scalability: Adding a new site or increasing bandwidth is often just a phone call away.
  • Security: Providers stay current with threats and can deploy patches faster.

Drawbacks

  • Less control: You depend on the provider for changes and troubleshooting.
  • Vendor lock-in: Switching providers can be difficult if your network is tightly integrated with their management tools.
  • Hidden costs: Some contracts charge extra for after-hours support, on-site visits, or hardware upgrades.
  • Security concerns: You’re trusting a third party with sensitive network data.

How to Choose a Provider

Selecting a managed network service provider requires careful evaluation. Here are key factors to consider:

  • Scope of services: Does the contract cover all your needs (LAN, WAN, Wi-Fi, security, cloud)?
  • SLA (Service Level Agreement): What uptime guarantee do they offer? What are the penalties for missing it?
  • Response times: How quickly do they respond to critical vs. minor issues?
  • Technology stack: Do they support your existing equipment or require a specific brand?
  • Security certifications: Look for SOC 2, ISO 27001, or similar compliance.
  • Exit strategy: What happens if you cancel? Will you get your configurations and data back?
  • References: Ask for case studies or speak with current clients.

Common Problems and How to Avoid Them

Even with a managed provider, issues can arise. Here are common pitfalls:

  • Scope creep: The contract may not cover new devices or locations added later. Review the scope regularly.
  • Poor communication: The provider may not explain technical issues in business terms. Establish clear escalation paths.
  • Security gaps: The provider may not include security monitoring in the base package. Confirm what’s included.
  • Hidden fees: Some providers charge for after-hours support or hardware replacement. Read the fine print.
  • Vendor lock-in: If you want to switch providers, you may need to replace hardware. Negotiate an exit clause upfront.

Costs and Pricing Models

Managed network service pricing varies widely based on the number of sites, devices, and service level. Common models include:

  • Per-site: A flat fee per location, typically $500–$2,000 per month for small businesses.
  • Per-user: A fee per employee, often $10–$50 per month.
  • Per-device: A fee per router, switch, or firewall, often $50–$200 per device.
  • Tiered: Basic, Standard, and Premium tiers with increasing features (e.g., 24/7 support, advanced security).
  • Usage-based: Charges based on bandwidth consumed or number of managed devices.

Most contracts require a 1-3 year commitment. On-site visits or hardware replacement may be extra. Always ask for a detailed quote that lists every line item.

Alternatives to Managed Network Services

If you’re not ready to outsource entirely, consider these alternatives:

  • In-house IT: Hire network engineers and manage everything yourself. This gives full control but requires higher salaries and 24/7 coverage.
  • Co-managed IT: Keep internal IT staff but hire a provider for specific tasks like security monitoring or after-hours support.
  • Break-fix support: Pay a provider only when something breaks. This is cheaper upfront but can lead to higher costs during emergencies.
  • DIY with cloud tools: Use cloud-based network management platforms and handle monitoring yourself. This requires technical expertise.
  • Network as a Service (NaaS): A more modern model where you rent the entire network infrastructure, including hardware, for a monthly fee.

Frequently Asked Questions

What’s the difference between managed network services and managed IT services?

Managed IT services cover the whole IT environment—servers, desktops, applications, help desk—while managed network services focus specifically on the network infrastructure (routers, switches, firewalls, Wi-Fi, WAN). Many providers offer both, but you can buy them separately.

Is managed network services the same as Network as a Service (NaaS)?

Not exactly. NaaS is a specific delivery model where you rent network hardware and software on a subscription basis, often with usage-based pricing. Managed network services can include NaaS, but they also cover design, monitoring, and support on equipment you may own.

How much does managed network services cost for a small business?

For a small business with one site, expect to pay roughly $500–$2,000 per month for basic monitoring and support. Costs increase with the number of sites, devices, and required service levels. Always get a detailed quote.

What should be in a managed network services SLA?

An SLA should specify uptime guarantees (e.g., 99.9%), response times for different severity levels, maintenance windows, reporting frequency, and penalties for non-compliance. It should also define what is and isn’t covered.

Can I keep my existing hardware with a managed provider?

Many providers support common brands like Cisco, Juniper, and Fortinet, but they may require that hardware be under warranty and capable of being managed remotely. Some providers only work with specific vendors. Check compatibility before signing.

How do I switch managed network service providers?

Switching involves reviewing your contract for exit clauses, ensuring you have access to your configurations and data, and coordinating a transition period. The new provider will typically conduct an assessment and migrate your network over a weekend to minimize downtime.

Related

Formula used
in t | Monthly budget | USD | 5000 | 0 | 1000000
in n | Number of sites | - | 5 | 1 | 1000
in e | Avg hours of IT time per month | h | 40 | 0 | 720
out cost_per_site | Cost per site per month | USD | t / n | 2
out it_hours_value | Value of IT hours saved | USD | e * 50 | 2
out total_value | Total monthly value | USD | t + (e * 50) | 2

Each line is one input (in, sel, list) or one result (out: label, unit, formula, decimals). How the calculators work

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

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