Department of Computer Science : University of Rochesterhttps://www.cs.rochester.edu/courses/257/fall2018/lectures/Lecture23_LinkLayer…[PDF]CSC 257/457 - Computer Networks - University of …2018年12月10日 · 74-29-9C-E8-FF-55 A 222.222.222.222 49-BD-D2-C7-56-2A 222.222.222.221 88-B2-2F-54-1A-0F B Addressing: routing to another LAN R forwards datagram with IP source A, destination B R creates link-layer frame with B's MAC address as destination address, frame contains A-to-B IP datagram