MIX supports switching of DS0 time slots through MIX interconnects across the midplane to each port adapter slot. In addition, the VXR midplane includes a Multiservice Interchange (MIX). The VXR chassis provides a 1 Gbps midplane when used with the NPE-300, NPE-400, or NPE-G1. Routers with the VXR midplane, and a later NPE (NPE-175, NPE-225, NPE-300, NPE-400, NPE-G1, and so on) Routers with the original midplane, and an early NPE (NPE-100, NPE-150, NPE-200). This document focusses on these two main designs:
The 7200 Series hardware architecture varies from model to model, and depends upon the combination of chassis and NPE, but it generally can be separated into two major designs. The 7200 Series Router chassis consists of the 2-slot Cisco 7202, the 4-slot Cisco 7204 and Cisco 7204VXR, and the 6-slot Cisco 7206 and Cisco 7206VXR:ħ202: A two-slot chassis that supports only these Network Processing Engines (NPEs):ħ204: A 4-slot chassis with the legacy midplane.ħ206: A 6-slot chassis with the legacy midplane.ħ204VXR: A 4-slot chassis with the VXR midplane.ħ206VXR: A 6-slot chassis with the VXR midplane. Conventionsįor more information on document conventions, see the Cisco Technical Tips Conventions. If your network is live, make sure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. This document is not restricted to specific software versions, and is based on the Cisco 7200 Series Routers. There are no specific requirements for this document. This document is provides overview of the hardware and software architecture of the Cisco 720x Series Routers.
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