1. Routing and Switching :
　　
　　2600 series routers
　　3600 series routers
　　Catalyst 3550 series switches
　　
　　2. Security :
　　
　　2500 series routers
　　2600 series routers
　　3600 series routers
　　4000 and 4500 series routers
　　3900 series token ring switches
　　Catalyst 5000 series switches
　　PIX - running Pix software version 5.2
　　Certificate Authority Support
　　Cisco Secure Access Control System
　　Cisco Secure Intrusion Detection System
　　
　　3. Communication and Services :
　　
　　2600 series routers
　　3600 series routers
　　Catalyst 3550 series switches
　　 思科官方网站连接请点这里>>>