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+.. _config-command-three:
+
+***********************
+Apply the Configuration
+***********************
+
+After the configuration files have been examined and are correct. The configuration
+can be applied. After the configuration is applied use option "1" to check the
+system configuration. Notice the default is NOT to change the grub file. If the option
+to change the grub command line is selected a reboot of the system will be required.
+
+.. code-block:: console
+
+   What would you like to do?
+
+   1) Show basic system information
+   2) Dry Run (Will save the configuration files in /usr/local/vpp/vpp-config/dryrun for inspection)
+   3) Full configuration (WARNING: This will change the system configuration)
+   4) List/Install/Uninstall VPP.
+   q) Quit
+
+   Command: 3
+
+   We are now going to configure your system(s).
+
+   Are you sure you want to do this [Y/n]? y
+   These are the changes we will apply to
+   the huge page file (/etc/sysctl.d/80-vpp.conf).
+
+   1,2d0
+   < vm.nr_hugepages=1024
+   4,7c2,3
+   < vm.max_map_count=3096
+   ---
+   > vm.nr_hugepages=8192
+   > vm.max_map_count=17408
+   8a5
+   > kernel.shmmax=17179869184
+   10,15d6
+   < kernel.shmmax=2147483648
+
+   Are you sure you want to apply these changes [Y/n]? 
+   These are the changes we will apply to
+   the VPP startup file (/etc/vpp/startup.conf).
+
+   ---
+   > 
+   >   main-core 8
+   >   corelist-workers 9-10
+   > 
+   >   scheduler-policy fifo
+   >   scheduler-priority 50
+   > 
+   67,68c56,66
+   < # dpdk {
+   ---
+   > dpdk {
+   > 
+   >   dev 0000:86:00.0 { 
+   >     num-rx-queues 2
+   >   }
+   >   dev 0000:86:00.1 { 
+   >     num-rx-queues 2
+   >   }
+   >   num-mbufs 25600
+   > 
+   124c122
+   < # }
+   ---
+   > }
+
+   Are you sure you want to apply these changes [Y/n]? 
+
+   The configured grub cmdline looks like this:
+   GRUB_CMDLINE_LINUX_DEFAULT="isolcpus=8,9-10 nohz_full=8,9-10 rcu_nocbs=8,9-10"
+
+   The current boot cmdline looks like this:
+   BOOT_IMAGE=/boot/vmlinuz-4.4.0-97-generic root=UUID=d760b82f-f37b-47e2-9815-db8d479a3557 ro
+
+   Do you want to keep the current boot cmdline [Y/n]?