To carry out the validation, we will access the UTM A CLI and run some commands, if you need more information about this, see this page.
One of the simplest tests to validate the operation of the routes is to ping UTM A (172.31.207.1) to UTM B (172.31.207.2) and check for an answer, as shown in the image below:
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This concludes the demonstration, for more information on Static Routing, see this page.
If you want to see more details about the columns on the Static Routing tab, visit this page.