6. data link layer physical addressing
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The data link layer is responsible for moving data packets between network interfaces. It contains the media access control (MAC) sublayer for sharing a channel and the logical link control (LLC) sublayer which acts as the interface to the network layer. Physical addressing identifies devices on a network using unique MAC addresses which can be unicast, multicast, or broadcast depending on whether they address a single, group, or all devices.
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![Communication
Networks
- Data Link Layer
[Physical Addressing]](https://image.slidesharecdn.com/6-200711131802/85/6-data-link-layer-physical-addressing-1-320.jpg)
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6. data link layer physical addressing
- 1. Communication Networks - Data Link Layer [Physical Addressing]
- 2. Video Lectures for these Slides are available at www.youtube.com/GURUKULA
- 3. Data Link Layer - Introduction The MAC layer is responsible for moving data packets to and from one Network Interface Card (NIC) to another across a shared channel. The LLC sublayer acts as an interface between the media access control (MAC) sublayer and the network layer.
- 4. Data Link Layer Functions: •Media Access Control • • •Logical Link Control: • • •
- 5. Physical Addressing - Introduction • •
- 9. Identification of Addressing Modes • • • •
- 10. Examples •4A:30:10:21:10:1A ➢This is a unicast address because A in binary is 1010 •47:20:1B:2E:08:EE ➢This is a multicast address because 7 in binary is 0111 •FF:FF:FF:FF:FF:FF ➢This is a broadcast address because all digits are F’s