Cisco Network Design

      Cisco uses its own brand of networking symbols. Since Cisco has a large Internet presence and designs a broad variety of network devices, its list of symbols is exhaustive. For CISCO specific network drawing diagrams, download the add-ons to enjoy the full functionality of all the Cisco Visio  here>>>
http://www.cisco.com/web/about/ac50/ac47/2.html

Detailed Cisco Network Diagram

      Identifiable network icons are used to depict common network appliances. For example: Router, and the style of lines between them indicate the type of connection. Clouds are used to represent networks external to the one pictured for the purposes of depicting connections between internal and external devices, without indicating the specifics of the outside network. The server is further connected to a printer and a gateway router, which is connected via a WAN link to the Internet.
Visio Network Stencils

Packet® Icon Library Packet Icons Product 1 Packet Icons Product 2 Packet Icons Product 3 Packet Icons Product 4 Packet Icons Product 5 Packet Icons Product 6

or http://www.cisco.com/en/US/products/hw/prod_cat_visios.html