default_routing.xml

<?xml version="1.0" encoding="UTF-8" ?>

<routes xmlns="http://www.symfony-project.org/schema/routing"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.symfony-project.org/schema/routing http://www.symfony-project.org/schema/routing/routing-1.0.xsd">

  <route id="_internal" pattern="/:_bundle/:_controller/:_action.:_format" />
</routes>