Data Link Layer
- use
- used for error free transfer of data frames
- source and destination mac address is added
FF:FF:FF:FF:FF:FF
broadcast mac address, or add mac address of the gateway- they keep on changing when frame is passed between routers
- ip address in never changed
- protocols
- Ethernet Ring
- Token Ring
- Frame Relay
- ATM
- SONET
- SDH
- PD H
- CD MA
- GSM
- pdu
- frames