Cisco Router and Security Device Manager (SDM) is a Web-based device-management tool for Cisco routers that can improve the productivity of network managers, simplify router deployments, and help troubleshoot complex network and VPN connectivity issues.
Cisco SDM supports a wide range of Cisco IOS Software releases and is available free of charge on Cisco router models from Cisco 830 Series to Cisco 7301. It ships preinstalled on all new Cisco 850 Series, Cisco 870 Series, Cisco 1800 Series, Cisco 2800 Series, and Cisco 3800 Series integrated services routers.
Network and security administrators and channel partners can use Cisco SDM for faster and easier deployment of Cisco routers for integrated services such as dynamic routing, WAN access, WLAN, firewall, VPN, SSL VPN, IPS, and QoS.
Cisco has listed SDM on the blueprints for pretty much every CCNA exam so I thought that I would provide some links regarding SDM with info on what it is and how to get it! Have Fun!!!
Cisco SDM Presentation:
Cisco SDM Demo Lab:
Cisco SDM and the SDM Sales Demo
Cisco ASDM Demo
Here is a link with a nice SDM description as well as some more good links involving SDM with GNS3 and such!