Link layer,LANs:roadmap ■introduction -error detection,correction multiple access protocols ■LANS ·addressing,ARP ·Ethernet 。switches ·VLANs a day in the life of a web link virtualization:MPLS request data center networking Link Layer:6-10 Link layer, LANs: roadmap ▪ a day in the life of a web request ▪ introduction ▪ error detection, correction ▪ multiple access protocols ▪ LANs • addressing, ARP • Ethernet • switches • VLANs ▪ link virtualization: MPLS ▪ data center networking Link Layer: 6-10