Network Digital Twin
Build a runnable multi-vendor replica of your network from a plain-English prompt in minutes, then execute real changes on real CLIs — not a read-only model.
Built on real multi-vendor network OSes — not approximations
What is a network digital twin?
A network digital twin is a virtual replica of a physical network you can run real configs and CLIs on to test changes before production. It mirrors your real topology, addressing, vendor NOSes, and routing relationships. Twins come in two forms: passive/telemetry twins that continuously model live production read-only (Forward Networks, Ciena, Nokia, VIAVI), and runnable twins you build on demand and actually execute changes on. NetPilot is the on-demand runnable twin — and the two are complementary. Read the full explainer.
Looking for change validation specifically? Network Change Validation Lab is the dedicated, focused page for pre/post BGP, ACL, and routing-change testing. The digital twin here is the broader umbrella — change validation is one of four use cases, alongside what-if modeling, dev/test sandboxing, and pre-deployment testing. See also the AI network emulator that powers it.
A runnable digital twin, not a read-only model
Passive/telemetry twins model live production but you can't execute a change on them; DIY labs run real gear but take weeks to build. NetPilot is the AI-built runnable twin — one umbrella for change validation, what-if modeling, dev/test sandboxing, and pre-deployment testing.
Cloud-native
Browser only. Nothing to install.
The alternative
DIY ContainerLab / EVE-NG twins mean VMs, Docker, 16-32 GB RAM, and hours of setup before a single device boots.
AI-designed
Describe any topology in plain English — AI designs, configures, and deploys it; SSH in to verify.
The alternative
Passive/telemetry twins (Forward, Ciena, Nokia, VIAVI) model prod read-only; DIY labs mean hand-writing YAML per device.
Multi-turn iteration
“Add an Arista spine, move OSPF to area 0.0.0.1” → AI updates across all devices.
The alternative
Rewrite + push configs by hand, device by device; verification tools analyze a change but can’t run it on a live replica.
2 minutes vs days/weeks
~2 minutes from prompt to working multi-vendor lab.
The alternative
Standing up a self-hosted twin is days-to-weeks of provisioning, image sourcing, and per-device CLI before the first test.
See It in Action
Watch how NetPilot builds a complete sandbox environment from a single description.
From prompt to a running digital twin
Describe the network (or paste sanitized configs), let the agent build and deploy the runnable twin, then SSH into real device CLIs to execute and verify the change.
1. Describe it — or import your configs
Tell NetPilot what to twin in plain English, or paste sanitized production configs. No diagrams, no templates, no YAML to hand-write — the agent matches your topology, addressing, vendor NOS, and routing relationships.
2. The AI agent builds and deploys the twin
NetPilot lays out the topology, generates per-vendor configs, and deploys a runnable multi-vendor twin — Nokia SR Linux, FRR, and Linux built in, plus Cisco IOL, Juniper cRPD, Arista cEOS, Palo Alto, and Fortinet via bring-your-own-image — 9+ network OSes and growing, to dedicated cloud or your on-prem environment in minutes.
3. SSH into real CLIs and execute the change
Open a real device CLI over SSH, apply the change, watch OSPF reconverge, and verify — or let the agent drive every device for you. Real network-OS code, not a read-only model, so behavior matches production before it ships.
Four use cases, one runnable digital twin
Change validation, what-if modeling, dev/test sandboxing, and pre-deployment testing — the same AI-built multi-vendor twin, different workflows.
Change Requests Go Untested
Network changes go straight to production because building a test environment takes too long. One misconfigured BGP peer or ACL can take down critical services.
Automation Scripts Break in Production
Your Ansible playbooks work in dev but fail on production gear. Without a realistic multi-vendor test bed, you're debugging live — and hoping nothing breaks.
Lab Setup Takes Weeks
Building a POC environment means provisioning VMs, finding device images, configuring each device by hand. By the time it's ready, the project timeline has slipped.
Multi-Vendor Complexity
Your production network has Cisco, Juniper, Arista, Nokia, and Palo Alto. Matching it by hand needs expertise in every vendor's CLI — the agent writes per-vendor syntax across 9+ NOSes for you.
Traditional Sandbox vs. NetPilot Digital Twin
Stop waiting weeks for sandbox environments. AI-built digital twin in minutes for every use case.
Traditional workflow
Weeks per environment
With NetPilot
Minutes per environment
A Complete Network Digital Twin Platform
Everything you need for change validation, what-if modeling, dev/test sandboxing, and pre-deployment testing — on real multi-vendor CLIs.
Change Management Sandbox
Validate every change request before production. Test BGP updates, ACL changes, and routing migrations in an isolated sandbox environment.
Pre-Production Validation
Catch configuration errors before they cause outages. Test failover scenarios, validate configs, and ship changes with confidence.
Automation Testing
Run Ansible, Python, Terraform, or any automation code against real device CLIs. Test in isolation, debug safely, deploy with confidence.
Runnable Network Digital Twin
Describe your topology or paste sanitized configs. The agent builds a matching runnable twin — real NOS you can execute changes on, in minutes.
Multi-Vendor Support
9+ network OSes and growing — Nokia SR Linux, FRR, and Linux built in; Cisco IOL, Juniper cRPD, Arista cEOS, Palo Alto, and Fortinet via bring-your-own-image (BYOI); SONiC and other custom NOS images are built for you on the enterprise plan. The agent handles each vendor's syntax.
Isolated Cloud Sandbox
Each sandbox runs in a dedicated cloud VM. No shared resources, no conflicts. Test sensitive scenarios without exposing production.
What you can model as a digital twin
Describe any of these in plain English — the agent builds a runnable multi-vendor replica you can apply changes to and verify on real device CLIs.
Production-mirror digital twin
Paste sanitized configs — the agent builds a runnable replica of the segment so you can execute the change before prod.
BGP / ACL change validation
Stage a route-map, prefix-list, or ACL edit on the twin, watch sessions reconverge, and diff before/after on real CLIs.
What-if link & node failure
Drop a link or fail a core router on the twin and model how OSPF, IS-IS, or BGP reroutes — without touching live gear.
Pre-deployment NOS upgrade test
Rehearse a software upgrade or feature rollout on a faithful copy to catch breakage before the maintenance window.
Automation dev/test sandbox
Run Ansible, Nornir/Netmiko Python, or Terraform against the twin’s real NOS to debug playbooks off production.
CI/CD twin per pull request
REST API spins up a fresh twin on every PR and tears it down on merge — config tests run before code ships.
Multi-vendor interop modeling
Cisco, Juniper, Arista, and Nokia in one twin — verify cross-vendor routing and policy behavior matches design.
Vendor POC & migration twin
Model a migration target — Arista vs Juniper, new SD-WAN, an EVPN fabric — and validate the design before you buy.
Works with your existing stack
The digital twin is built from your source-of-truth and feeds back into the tools your team already runs. Run your automation and tests against the twin today; under the enterprise plan, NetPilot's team builds the MCP/API integration into your stack with you.
NetBox / Nautobot
The twin is built from your source-of-truth — NetBox/Nautobot documents the topology, NetPilot builds the matching runnable twin from it. Source-of-truth wiring built with you under the enterprise plan.
ServiceNow / Jira
A change record spins up a twin of the affected segment; you validate the change and hand the report back to the ticket. Wired in under the enterprise plan.
Forward / Batfish / Cisco pyATS
They model live prod (Forward), prove config invariants (Batfish), and assert device state (pyATS); NetPilot is the runnable twin those checks execute against before the change ships.
Ansible / Terraform
Run Ansible playbooks, Nornir/Netmiko/NAPALM scripts, or Terraform network providers against the twin's real NOS CLIs via SSH — today, before they touch prod.
Git / CI-CD pipelines
A fresh twin per pull request via the REST API — apply the change, diff pre/post state, gate the merge. GitHub Actions, GitLab CI, or your pipeline (enterprise REST API).
NetBox, ServiceNow, Git, and CI/CD wiring is built with you under the enterprise plan (hands-on Signature and Enterprise delivery).
Runnable twin vs passive twins vs DIY
Forward Networks, Ciena, Nokia, and VIAVI win the continuous live-prod telemetry twin — that's their lane. NetPilot is the on-demand runnable twin you build from a prompt and actually execute changes on; open-source ContainerLab is the DIY YAML alternative. Many teams use both a passive twin and a runnable twin.
Enterprise Sandbox Use Cases
From change management validation to CI/CD pipelines, NetPilot fits into your existing workflow.
Change Management Validation
Test every change request in a sandbox before production. Validate BGP changes, ACL updates, routing protocol migrations — catch errors before they cause outages.
Network Automation CI/CD
Integrate lab provisioning into your GitOps pipeline. Test Ansible playbooks, Terraform configs, and Python scripts automatically with every commit.
Vendor POC Evaluation
Evaluating new vendors or technologies? Spin up a test environment in minutes. Compare Arista vs Juniper, test SD-WAN solutions, validate before you buy.
Training & Onboarding
Onboard new team members with realistic lab environments. Practice network scenarios without risking production. Upskill your team on multi-vendor configurations.
The Cost of Skipping the Sandbox
Where NetPilot fits vs passive twins + DIY
Pick passive/telemetry twins + DIY labs when you need:
- •You need a continuous, always-on twin fed by live production telemetry (Forward Networks, Ciena, Nokia, VIAVI)
- •You need whole-network assurance, drift detection, and what-if at 10k+ device scale
- •Your use case is offline formal / model-based verification of configs (Batfish, Forward)
- •You want to own the YAML and image library end-to-end on your own hardware (ContainerLab)
Pick NetPilot when you need:
- •AI-built runnable twin of a network segment in minutes, not weeks
- •Dual-path: agent iterates the twin ("move OSPF to area 0.0.0.1, inject the R2 failure, show convergence") or SSH in and drive the CLI yourself
- •Real CLIs on real NOS images — the twin actually runs, you execute the change, not just analyze it
- •9+ network OSes and growing, multi-vendor in one topology
- •REST API for CI/CD — spin up / tear down a fresh twin per pull request
Verdict:Passive/telemetry twins win the continuous live-prod model, and formal tools win offline proof — both stay valuable and complementary. NetPilot is the AI-built runnable digital-twin choice for teams who need to build a faithful replica on demand and safely execute a change on real multi-vendor CLIs before it touches prod — as of 2026, the productized AI-native option for that job.
Frequently Asked Questions
Common questions from enterprise teams evaluating NetPilot.
Explore More
What Is a Network Digital Twin?
The full explainer: definition, passive vs runnable twins, examples, and how to build one.
Network Change Validation
The dedicated, focused page for pre/post BGP, ACL, and routing-change testing.
AI Network Emulator
The AI-native emulator under the hood — build multi-vendor labs from plain English on real CLIs.
Best Change Validation Tools 2026
Tier-ranked comparison: NetPilot vs Batfish vs Forward Networks vs Itential.
Your Digital Twin. Same-Day.
14 days. Unlimited sandbox environments. A dedicated environment for your team — change validation, what-if, dev/test, pre-deployment. No credit card required. Dedicated onboarding support included.