Network Diagrams: VLANs and IP Subnets

One of the most common items that we need to draw are VLANs and Layer 3 segment and there is many ways to create a useful shape. In this post, I want to look at creating a simple, but useful shape that is a single element, and thus easy to use.

Draw a simple line

The first step is to draw a simple line from left to right using the drawing tools.

net-diag-vl-l3-1.jpg

Now right click on the line, and select the Format, Line (as shown)

net-diag-vl-l3-2.jpg

What we really want is for this shape to look contained, so it needs some ends. So click on the Line Ends, Begin :

net-diag-vl-l3-3.jpg

and repeat the same thing, selecting the same design elements for both ends. I use a open square box to leave lots of white space on the page (which makes your drawing more pleasant) and to save ink when printing. Now make the Line Ends a bit larger.

net-diag-vl-l3-4.jpg

And now your will have the following shape:

net-diag-vl-l3-5.jpg

Wrap up

Because this shape is a single element, and not a collection of other elements, it is easier to use and will be more flexible in most diagrams. Your connectors will stick to it, and it will bond to the Visio grid in a consistent manner.

Other posts in the series

  1. Colour Blindness, Network Diagrams and Reliability
  2. Designer or Engineer, Artist or Painter
  3. Network Diagrams: Rotating Text on a Line
  4. Network Diagrams: Tips for Printing from Visio
  5. Network Diagrams:Zones on a diagram with Visio shape union
  6. Network Diagrams: Drawing complex VLAN Networks with IP Addressing
  7. Network Diagrams: Drawing Freehand Curves (and then fixing them)
  8. Network Diagrams:Aligning Shapes
  9. Network Diagrams:Locking the Background Shape
  10. Network Diagrams: Labelling an VLAN/IP Segment
  11. Network Diagrams: VLANs and IP Subnets (This post)
  12. Network Diagrams: Drawing the Background Shape
  13. On the Art of Network Diagrams and Presentation
About Greg Ferro

Greg Ferro is a Network Engineer/Architect, mostly focussed on Data Centre, Security Infrastructure, and recently Virtualization. He has over 20 years in IT, in wide range of employers working as a freelance consultant including Finance, Service Providers and Online Companies. He is CCIE#6920 and has a few ideas about the world, but not enough to really count.

He is a host on the Packet Pushers Podcast, blogger at EtherealMind.com and on Twitter @etherealmind and Google Plus