Network topology

A network diagram that redraws itself after every scan.

Scanopy draws the physical topology port to port from LLDP, CDP, and switch forwarding tables, and the logical topology subnet by subnet. Each scheduled scan rebuilds both from what it finds.

app.scanopy.net
Scanopy Physical (L2) view showing switch ports, VLANs, and discovered links

Physical (L2): every switch port and what plugs into it

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Scanopy Physical (L2) view showing switch ports, VLANs, and discovered links

Links from LLDP and CDP

Port-to-port links come from the neighbor tables on your switches, read over SNMP or gNMI, or from UniFi and HPE Aruba Instant On controllers.

Forwarding tables fill the gaps

Where a port has no LLDP neighbor but its forwarding table shows one device, Scanopy links the port to that device.

Port status and speed

Each port shows its speed and operational status. Trunk ports, access ports by VLAN, and ports by status are grouped by default.

Logical (L3): every subnet and the addresses in it

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Scanopy Logical (L3) view showing subnets and the hosts on each

Subnets as containers

Each subnet holds the IP addresses discovery found in it, typed as LAN, WiFi, IoT, Guest, DMZ, and more. See VLANs & subnets.

Multi-homed hosts, connected

A host with addresses in several subnets shows a link between them, so you can see which machines bridge segments.

Click for the details

Select any address to see its host, the services on it, and the host’s other addresses.

Laid out by rules you set, not by dragging boxes

Automatic layout

Scanopy lays out every view automatically, so a rescan never leaves you with a diagram to tidy.

Group and filter

Group by subnet, host, service category, or tag. Filter by tag, link state, or how recently a device was seen.

On your schedule

Set each discovery to rescan on a day and time, or with a cron expression.

Motala Kommun

IT department

Municipality - Sweden

"With over 800 switches in our network, keeping topology documentation up to date by hand is almost impossible. We needed automation, especially with NIS2 raising the documentation requirements. Scanopy keeps it current for us."
FAQ

Frequently asked questions

What does Scanopy need to map physical topology?

SNMP read access to your switches (v1, v2c, or v3), or gNMI on switches that support it. UniFi and HPE Aruba Instant On networks can use their controller instead. Devices that don’t advertise LLDP or CDP are linked from switch forwarding tables where possible.

Is this a monitoring tool?

No. Scanopy documents what is on the network and how it connects, and rebuilds that on a schedule. It runs alongside your monitoring tools, which track health, bandwidth, and alerts.

Can I get the diagram into Visio or draw.io?

Yes, on plans that include those formats. The map also exports as PNG, SVG, PDF, HTML, Mermaid, or Confluence markup, embeds live in a wiki, or shares by read-only link. See sharing, embeds & exports.

See it on your own network.

View live demo →