Information about Store And Forward Delay

In a network based on packet switching, transmission delay (or Store-and-forward delay) is the amount of time required to push all of the packet's bits into the wire. In other words, this is the delay caused by the data-rate of the link.

Transmission delay is a function of the packet's length and the transmission delay and has nothing to do with the distance between the two nodes. This delay is proportional to the packet's length in bits,

It is given by the following formula:
where
is the transmission delay
N is the number of bits, and
R is the rate of transmission (say in bits per second)


Most Packet switched use store-and-forward transmission at the input of the link. A switch using store-and-forward transmission will receive (save) the entire packet to the buffer and check it for CRC errors or other problems before sending the first bit of the packet into the outbound link. Thus store-and-forward packet switches introduce a store-and-forward delay at the input to each link along the packet's route.

References

  • Computer Networking: A Top-Down Approach by Kurose and Ross
as a college campus, industrial complex, or a military base. A CAN, may be considered a type of MAN (metropolitan area network), but is generally limited to an area that is smaller than a typical MAN.
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Packet switching is a communications paradigm in which packets (discrete blocks of data) are routed between nodes over data links shared with other traffic. In each network node, packets are queued or buffered, resulting in variable delay.
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Packet switching is a communications paradigm in which packets (discrete blocks of data) are routed between nodes over data links shared with other traffic. In each network node, packets are queued or buffered, resulting in variable delay.
..... Click the link for more information.


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