Cisco 4000 Series Integrated Services Routers

The Cisco^® 4000 Series Integrated Services Router (ISR) platforms revolutionize WAN communications in the enterprise branch. With new levels of built-in WAN intelligence and convergence, it specifically addresses the growing need for application-aware networking in distributed enterprise sites.

You can order the platform as a base system or as a bundled system for security, unified communications, or application services. This ordering guide focuses on base system configurations and options, but most of the elements are applicable to bundle ordering as well. For a detailed list of advanced technology bundles, please refer to the section, “Ordering Bundled Systems for Cisco 4000 Series ISRs,” of this ordering guide.

Ordering the Cisco 4000 Series ISRs

The Cisco 4000 Series ISRs offer the highest performance within the ISR portfolio. The series contains the Cisco 4451-X, 4431, 4351, 4331, 4321, and 4221 routers, which differ primarily in performance capabilities and in the number of Network Interface Module (NIM) and enhanced Service Module (SM-X) slots supported.