The Cisco 1721 (shown below in Figure 1) is an enhanced version of the award-winning Cisco 1720 Modular Access Router. The Cisco 1721 offers higher performance, additional functionality, and increased memory capacity over the Cisco 1720. In addition, the Cisco 1721 supports standards-based IEEE 802.1Q VLAN routing, which enables enterprises to set up multiple VLANs and route between them for added security within the internal corporate network.

Powered by Cisco IOSSoftware, the Cisco 1721 and 1720 routers provide a cost-effective solution for small and medium businesses and enterprise small branch offices to support e-business applications through a comprehensive feature set in a compact design.