|  | 11.5 | Routing Protocols
| 11.5.3 | Routing encapsulation sequence
At the data link layer, an IP datagram is encapsulated into a frame. The datagram, including the IP header, is treated as data. A router receives the frame, strips off the frame header, then checks the destination IP address in the IP header. The router then looks for that destination IP address in its routing table, encapsulates the data in a data link layer frame, and sends it out to the appropriate interface. If it does not find the destination IP address, it may drop the packet.