Glossary
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Routers work at the Network layer of the OSI model. This means they can switch and route packets across multiple networks. They do this by exchanging protocol-specific information between separate networks, Routers read complex network addressing information in the packet and, because they function at a higher layer in the OSI model than bridges, they have access to additional information. Routers can provide the following functions of a bridge: Filtering and isolating traffic, and connecting network segments. Routers can prevent broadcast storms because broadcast packets, generally, are not allowed to cross the router from one segment to another.
Related Info:
https://cis.bbent.com/Videos/routers.mp4