LAN technologies Data link layer so far: o services, error detection/correction, multiple access Next: LAN technologies o addressing o Ethernet o hubs, bridges, switches 802.11 user hosts O PPP Server O ATM Interne user hosts 5: DataLink Layer 5a-25: DataLink Layer 5a-2 LAN technologies Data link layer so far:  services, error detection/correction, multiple access Next: LAN technologies  addressing  Ethernet  hubs, bridges, switches  802.11  PPP  ATM