Video presentation: Network Layer: The Internet Protocol, part 1. Introduction, IP datagram format, addressing, DHCP.
Computer networks class.

Jim Kurose
Textbook reading: Section 4.3.1 and 4.3.2, Computer Networking: a Top-Down Approach (8th edition), J.F. Kurose, K.W. Ross, Pearson, 2020.
See http://gaia.cs.umass.edu/kurose_ross for more open student resources.