The committed information rate (CIR) refers to the lowest assured data transmission speed provided by a network service provider for a designated connection. This guarantee ensures that a specific bandwidth quantity is consistently accessible for a client’s network traffic, irrespective of network congestion or other external factors. Generally, CIR is expressed in kilobits per second (Kbps), megabits per second (Mbps), or gigabits per second (Gbps).
The maximum information rate (MIR) is the highest possible data transfer rate a network connection can achieve under optimal conditions. MIR is typically higher than the CIR, which means that the actual bandwidth available to a user can be higher than the guaranteed minimum (CIR) if the network is not congested.
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