37 lines
1.9 KiB
Markdown
37 lines
1.9 KiB
Markdown
---
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obj: application
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---
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# iperf
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iPerf is an open-source tool that is used for testing the performance of a network. It is widely used by network administrators, network engineers, and other IT professionals to measure the bandwidth and speed of a network.
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## Usage
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Once iPerf is installed, you can use it to test the performance of your network. The basic usage of iPerf involves running a server on one machine and a client on another machine. The client sends data to the server, and iPerf measures the bandwidth and speed of the network.
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To run an iPerf server, use the following command:
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```shell
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iperf -s
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```
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This will start an iPerf server on the default port 5001.
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To run an iPerf client, use the following command:
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```shell
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iperf -c <server_ip_address>
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```
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Replace `<server_ip_address>` with the [IP](../../internet/Internet%20Protocol.md) address of the machine running the iPerf server. This will start an iPerf client that sends data to the server and measures the bandwidth and speed of the network.
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By default, iPerf uses TCP as the transport protocol. If you want to use UDP instead, you can add the `-u` option to the iPerf command:
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```shell
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iperf -u -c <server_ip_address>
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```
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This will start an iPerf client that sends data using UDP.
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## Advanced options
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iPerf provides many advanced options that you can use to customize your network performance testing. Some of the common options are:
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- `-t`: Specifies the duration of the test (in seconds). By default, iPerf runs for 10 seconds.
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- `-i`: Specifies the interval between periodic bandwidth reports. By default, iPerf reports the bandwidth every second.
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- `-p`: Specifies the port number to use for the iPerf server. By default, iPerf uses port 5001.
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- `-w`: Specifies the TCP window size. This option is only applicable when using TCP as the transport protocol.
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- `-b`: Specifies the bandwidth to use for the test. This option is only applicable when using UDP as the transport protocol.
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