Running a Sample Application L3fwd Server

Following is an overview of the Layer 3 forwarding sample application, in which the forwarding decision is based on information read from the input packet. This is intended as a quick-start resource. For more information, see the Sample Applications User Guides at:

https://doc.dpdk.org/guides/sample_app_ug/l3_forward.html

1. To compile a sample application with Meson, use the configure command.

   A single application can be compiled by passing in the application’s name. Alternatively, all sample applications can be compiled by specifying ‘all’. Run the meson command from the DPDK ‘build’ directory.

   ### Move into build directory cd dpdk-22.11/build ### Compile and build L3 Forwarding Sample Application meson configure -Dexamples=l3fwd ninja
2. Run the application from the examples directory under build.

   The full path would look like:

   ./dpdk-22.11/build/examples/dpdk-l3fwd

The following are some usage examples of the application.

4 cores command line option:

2 cores command line option:

In these commands:

• The -l option enables cores 22,24,26,28.
• The -p option enables port 0,
• The -config option enables one queue on each port and maps each (port,queue) pair to a specific core. For example, (0,0,22) maps queue 0 from port 0 to lcore 22.

Please review Section 20.3, Running the Application in the Sample Applications User Guides for a complete explanation of all flag options.

Example l3fwd output: