Layered network map of a broadcaster

Views in this map

1. 1
   L1 PhysicalThe cables: fiber across Elm Street, the conduit it runs in, patch panels, copper drops.
2. 2
   L2 SwitchingSwitches, trunks and VLANs. Spanning tree blocks one of the studio switch’s uplinks.
3. 3
   L3 RoutingSubnets and routes. Building B has two uplinks, one to each core: it looks redundant.
4. 4
   L4 TransportConnections between services: 443 to the CMS is allowed, 5432 to its database is not.
5. 5
   Elm Street digOne backhoe, one conduit: both fibers run in it, so both of Building B’s uplinks go down.

L1 Physical ‹ › L2 Switching ‹ › L3 Routing ‹ › L4 Transport ‹ › Elm Street dig

Flows to play

• ▷
  One web requestA reporter in Building B opens a story in the CMS. In every view, one layer deeper each time: cables, VLANs, routes, then ports. In the dig it never leaves Building B.
• ▷
  The cutHow a gas main repair took the newsroom offline for five and a half hours. In the Elm Street dig view.

The model behind it

58 records of 11 types. Every box on the map is one of them, so the filters and the record panel read the same data.

• Devices 18
• Cables 13
• Sites 6
• VLANs 4
• Subnets 4
• Conduits 3
• Services 3
• 4 more types 7

Filters

Building and Device role: pick a value and everything else fades.