newsunicfirst.blogg.se

1. #Ieee 802.3 media access control layer (mac) is responsible for what? driver#
2. #Ieee 802.3 media access control layer (mac) is responsible for what? mac#

In the connectionless service, the data is sent to the peer directly without any connection establishment. IP datagram service, without prior connection establishment between source and destination and without acknowledgement. Unacknowledged Connectionless ServiceĬonnectionless service is also known as the best effort service e.g. LLC provides the following types of services. The LLC also provides flow control optionally by allowing the receivers to control the sender’s speed through control frames known as Receive Delay and Receive Not Delay. If the frame lost during transmission, the sending node retransmits lost frames. By the help of LLC the sending node numbering each frame during transmission called sequence number, at the other hand, the receiving node acknowledged each received frame using the acknowledgement number. LLC optionally present reliable frame forwarding. This process is called the multiplexing process.

#Ieee 802.3 media access control layer (mac) is responsible for what? mac#

When Layer 3 sends a packet, LLC takes it from different Layer 3 protocols like IP, IPX, ARP etc., and forward it over to the MAC layer after adding the Layer 3 protocol type in the LLC header portion of the frame multiplexing. It is called the de-multiplexing process. When the data link layer received a frame from the physical layer, the LLC is looking at the Layer 3 Protocol type and handing over the datagram to the correct Layer 3 protocol. Multiplexing/De-MultiplexingĪs I mentioned earlier that LLC communicates with the uppers i.e network layer.

#Ieee 802.3 media access control layer (mac) is responsible for what? driver#

Driver software also enables the communication between the network device, computer, and operating system as well as with other network computers and network devices. The driver is a software program and instruction that interacts directly with the computer NIC and other hardware. The driver software of computer NIC and be considered as LLC. LLC is implemented in software, and its implementation is independent of the hardware. The LLC sublayer communicates with the upper layers of the application and transition the packet to the lower layers for delivery. LLC sublayer also adds control information to help deliver the packet to the destination. It gets the network protocol data, which is usually an IPv4 packet. It communicates with upper layers of the OSI model. The upper sublayer of the data link layer is known as LLC sublayer.

Other notable standards are 802.3i for 10Base-T for using twister pair wire and 802.3j 10BASE-F for using fiber-optic cables. There are a multitude of additions and revisions to the 802.3 standard and each is designated with letters concatenated after the number "3". 802.3a followed in 1985 and was designated as 10BASE2, which was essentially the same as 10BASE5 but ran on thinner coax cables, therefore it was also known as thinnet or cheapnet. It had the same speed as the previous Ethernet II standard, but the "Type" field was replaced by a "Length" field. In 1983 the first standard with the name IEEE 802.3 for 10BASE5 (thick Ethernet or thicknet) was developed. The technology was developed to work with the IEEE 802.1 standard for network architecture and its first released standard was Ethernet II in 1982, which featured 10 Mbit/s over thick coax cable and featured frames with a "Type" field. IEEE 802.3 specifies the physical and networking characteristics of an Ethernet network, like how physical connections between nodes (routers/switches/hubs) are made through various wired media like copper coaxial or fiber cable.