WHAT ARE LLC and MAC?
The data link layer (Layer 2) of the OSI model actually consists of two sublayers: the Media Access Control (MAC) sublayer and the Logical Link Control (LLC) sublayer. The MAC sublayer controls device interaction. The LLC sublayer deals with addressing and multiplexing.
What is difference between MAC and LLC?
– The MAC sublayer does what the PHY layer should be doing: detection (error, collision), channel listening, analog-to-digital and digital-to-analog translation, etc. – While the LLC sublayer decides what to logically do with that information, e.g. retransmit the frame if an error occurs.
What is LLC in Wi-Fi?
In the IEEE 802 reference model of computer networking, the logical link control (LLC) data communication protocol layer is the upper sublayer of the data link layer (layer 2) of the seven-layer OSI model. The LLC sublayer acts as an interface between the media access control (MAC) sublayer and the network layer.
What does logical link control do?
The Logical Link Control (LLC) sublayer provides the logic for the data link; thus it controls the synchronization, flow control, and error-checking functions of the data link layer.
What is the function of MAC?
The basic function of MAC is to provide an addressing mechanism and channel access so that each node available on a network can communicate with other nodes available on the same or other networks.
What happens when two devices on the same subnet are communicating?
What happens when two devices on the same subnet are communicating? The host portion of the IP addresses will be different. When two devices are on the same local network, the network portion of their IP addresses will be the same and the host portion of their IP addresses will be different.
What is PHY in networking?
PHY, defined by IEEE-802.3, is an abbreviation for the physical layer of the Open Systems Interconnection (OSI) model, and is also usually the most complex. It is special because it is the only layer of the OSI model where data is physically moved across the network interface.
How can I see the IP addresses of devices on my network?
To see all of the devices connected to your network, type arp -a in a Command Prompt window. This will show you the allocated IP addresses and the MAC addresses of all connected devices.
Can two subnets talk to each other?
What is subnetting? A subnet is just a range of IP addresses. All the devices in the same subnet can communicate directly with one another without going through any routers.
What is PHY MAC?
A PHY connects a link layer device (often called MAC as an acronym for medium access control) to a physical medium such as an optical fiber or copper cable. A PHY device typically includes both physical coding sublayer (PCS) and physical medium dependent (PMD) layer functionality.
What is a MAC vs PHY?
The PHY layer defines the physical and electrical characteristics of the network. It is responsible for managing the hardware that modulates and demodulates the RF bits. The MAC layer is responsible for sending and receiving RF frames.
What is the difference between PHY MAC and FEC?
Different PHY layers will have different FEC configurations and modulation formats. MAC is the short form of Medium Access Control Layer. It is the layer-2 in OSI stack.
What is the PHY and MAC layer in LTE and GSM?
GSM, LTE, UMTS are based on 3GPP series of standards. As these standards define PHY and MAC layer specifications separately and hence products based on these standards should house both of these functionalities.
How does the Mac work on Zynq MPSoC devices?
On Zynq MPSoC devices the MAC runs in the ARM R5 cores in the RPU. On other devices the MAC runs in MicroBlaze CPUs in the FPGA. The MAC operates in real time. The MAC software is designed to support totally custom protocol implementations. The MAC software design is split between the two CPUs in the FPGA design.
What is the Mac software design in an FPGA?
The MAC software design is split between the two CPUs in the FPGA design. The software project in each CPU is built on a MAC framework which implements the many building blocks common to multiple MAC designs. These frameworks are designed to simplify the development of custom MAC designs without restricting flexibility.