Map levels make your maps easier to view. LANsurveyor maps can have thousands of nodes, so LANsurveyor automatically groups map objects into three levels:
| • | Level 1 includes network segments and routers (SNMP support is required to identify routers) |
| • | Level 2 includes network segments, routers and switches (SNMP support is required to identify switches) |
| • | Level 3 includes network segments, routers, switches, and all other end nodes |
Your default map view is determined by the Levels settings in the Options dialog.
Change Map Levels
To change your map level, click on one of the map level icons. Click on the Level 1 icon 
to view just your routers and network segments. Click on the Level 2 icon 
to view Level 1 plus your switches. The Level 3 icon 
displays all map nodes. To limit the nodes displayed in Level 3 to certain classes of objects (e.g., just nodes that responded to SNMP queries), use Level 3 object filtering in the Options dialog.
When you change your map view level, the map is redrawn and any changes you've made to your map will be lost unless you undo the map level change. Therefore, if you have arranged your map objects manually, make sure you save a copy of your initial map to preserve your changes.
You can display nodes connected to a specific device using the show/hide icons. For example, if you want to see nodes connected to a switch in a Level 2 view, click on the switch icon on the map then click the show toolbar icon 
. If you want to hide nodes connected to a router, click on the router icon on the map then click the hide toolbar icon 
.
You can combine map levels and show/hide nodes to display a specific area of interest on your network.
Focus in New Window
Click the Focus in New Window icon 
to create a new map with the selected object and all connected sub-level objects. If you select a router and use Focus in New Window, the router, attached switches, and connected end nodes will be displayed in a new map. If you select a switch, just the nodes connected to the switch will be displayed.
Customized Visio Output
At any point, you can click on the Save to Visio icon 
or select Save as Visio from the File menu to generate a copy of what you see on your screen in Visio format. Refer to the Save as Visio section for more information.