Cisco might be a world leader when it comes to internet networking, but based on their logo design we'd have to say they're also a world leader when it comes to subtle brilliance in the marketing department. This seemingly-simple design not only symbolizes what the good people at Cisco do for a living, but also pays tribute to their origins. Cisco is named in honor of the city where they first set up base, and still have their headquarters - San Francisco, California.
The pattern of the blue stripes above Cisco's name should look very familiar to you - and even more so if you work within a scientific or engineering profession. This is what an electromagnet looks like, and so it's a great design to go for if you work in networking. Not only that, though, but the lines are also composed in the same pattern as the construction of San Francisco's Golden Gate bridge. We suppose they could have made it red to make it more obvious, but then the subtlety would be lost.