If you searching for network topology diagrams, this network elements can be a good reference. This is the Cisco routers and elements diagrams, this picture can be found at conceptdraw.com. This diagram consists of many icons of router and elements for network topology such as Router icon, Broadband router icon, Wavelength router icon, Cable modem icon, etc. There are also several icons of Cisco's products such as: uBR 910 icon, Cisco 7505 icon, Cisco 7500 ARS (7513) icon, ASR 1000 Series icon, ATM 3800 icon, and many more.
All the element pictures are designed in 3D icon shape and completed with caption of element's name. This picture was designed in PNG file, so you can use this picture in large size with good quality. You can directly download this file on this website or by visiting the link on below reference.
Cisco Systems, Inc. is an American multinational technology company headquartered in San Jose, California, that designs, manufactures and sells networking equipment. It is the largest networking company in the world. Cisco's products and services focus upon three market segments, enterprise and service provider, small business and the home. There are various products and services of Cisco - wikipedia.