Cisco SL-19-IPB-K9 IP Base License for 1941, 1921 Series Routers

By default, all the routers ship with an IP Base license. You can order the routers from the factory with technology licenses preinstalled using the paper license part numbers (start with the keyword “SL”). Alternately, if you plan to deploy the advanced technology features later, you can order the required licenses as spares. You can order spares for technology licenses as paper licenses or e-delivery licenses (start with keyword “L-SL”).