McDewey

Preferred Architecture for Cisco Collaboration Release 15 On-Premises Deployments PAGE 11
Introduction

Figure 3. Cisco Catalyst 8000 Series and ISR 4461 Functions

The Cisco Catalyst 8000 and ISR 4461s have additional slots that support add-on modules such as wireless controllers. Deployments can use various Cat8K and ISR 4461models to support different features, to scale, and to accommodate additional services. Their modular design enables the Cat8K and ISR to be deployed at headquarters, remote locations, or branch locations. For more information about these routers, see the Catalyst 8000 Series and Cisco ISR 4000 data sheets.