Delay , Loss & Throughput

Basic information about Delay,Packet & Throughput.

1. DELAY PACKET LOSS THROUGHPUT Presented by: Kartik H. Chauhan

2. DELAY: It is the time taken to transfer the entire message from sender to receiver.

3. Total delay can calculated by four components . Processing delay Queuing delay Transmission delay Propagation delay

4. Processing delay: Time requires by intermediate device or end device to process the message before for forwarding. Processing delay is the time it takes routers to process the packet header.

5. Queuing delay : Time requires by intermediate device or end device to hold the message before starting of processing. Router can process message one by one ,so newly arrived message would be in a queue.

6. Transmission delay: Message does not means single bit in network. message consist thousands of bits. So sending message means transmitting all thousands bits of that message.

7. Propagation delay : Time required for a bit to travel from the source to destination. The propagation delay is calculated by dividing the distance by the propagation speed .

8. Packet loss: In networking intermediate device like router are having fix queue size. If queue is full, at a time router will drop the packet. It is known as packet loss.

9. Bandwidth : Bandwidth  is defined as the amount of data that can be transmitted in a fixed amount of time. For digital devices, the bandwidth is usually expressed in bits per second(bps) or bytes per second . For analog devices, the bandwidth is expressed in cycles per second , or Hertz (Hz).

10. Difference Between Bandwidth and Throughput :

11. Throughput: Through put is a measure of how fast we can actually send data through a network. Throughput is actual measurement of how fast data can be send. Throughput is usually measured in bits per second and some time in data packets per second or data packets per time slot.