Telecom & Networking

Advanced

Bandwidth-Delay Product

Amount of data 'in flight' on a link, setting the ideal window size.

Formula

BDP = B \times RTT

Live Calculator

Members

Variables

BDPBandwidth-delay product (bits)

BBandwidth (bps)

RTTRound-trip time (s)

Example

B=100 Mbps, RTT=40 ms: BDP = 4 Mb

Did You Know?

On 'long fat networks' a too-small TCP window leaves most of the pipe empty and slow.

telecom bdp tcp

Share this formula

More in Telecom & Networking

Shannon Channel Capacity

Maximum error-free data rate of a channel given bandwidth and signal-to-noise ratio.

Nyquist Data Rate

Maximum data rate for a noiseless channel with M signal levels.

Power Decibels

Ratio of two power levels expressed logarithmically.

Free-Space Path Loss

Signal attenuation over distance in free space (d in km, f in MHz).

Throughput

Actual data delivered per unit time.

Propagation Delay

Time for a signal to travel a distance at propagation speed.