Networking is a process of connecting two more than two computers with the purpose to share data, provide technical support, and to communicate
VXLAN is essentially a tunneling technology which establishes a logical tunnel on the IP network between the source and destination network. VXLAN is a Layer 2 overlay network over a Layer 3 underlay network. An overlay network is a virtual… Read More ›
Framing is the process of encapsulating the packets received from network layer into frames. The complete message from the network layer can be packed into single frame but this is not done as flow and error control becomes inefficient as… Read More ›
Each frame is added a header and trailer where header helps in differentiating one message from source to destination or other message to other destination. The trailer contains error detection and correction bits. This is commonly known as cyclic redundancy… Read More ›
The length of each type of frame(ethernet, token ring, ATM) can vary. Here discussion revolves around ethernet frame The size of data payload can vary from 46 bytes to 1500 bytes. Thus minimum size of frame length can be 64… Read More ›
There are three techniques for error controlling in data link layer Stop-and-Wait-ARQ: In this method sender does not send the next frame until it does not receive acknowledgement for the last sent frames. It starts a timer once frame is… Read More ›
This is the other major responsibility for data link layer other the Data link control that is framing, error control and flow control. This is basically sharing of common media across multiple networking devices. It is responsible for resolving access… Read More ›
This is one of the group of protocol for media access control. There is no schedule time for a station to transmit, transmission can happen by any station at any point of time. All the station compete for the shared… Read More ›
This is the physical address which is used at Data link layer. It stands for Media Access Control address. It is 12 digit hexadecimal number, represented by colon-Hexa-decimal notation. It is of 48 bits, embedded into Network Interface card(NIC) Format… Read More ›
MAC can be classified as: Unicast mac address Multicast mac address and Broadcast mac address Unicast mac address: Any frame with unicast address is send sent out to the interface leading to specific NIC. It is one to to one… Read More ›
Port Address Translation(PAT): This is the most common type of NAT and its many to one mapping. Here multiple internal IP address can be mapped to single public IP address. In this case mapping is done on the combination of… Read More ›
Tech Access Info 