0.9.4 and later versions of m2eclipse will execute the sysdeo-tomcat-maven-plugin as part of the Update Configuration task. A dedicated mojo is used, to support some tiny differences between command line maven and m2eclipse, but the configuration is the same :
Step One: Add the plugin to your web application's pom.xml :
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>sysdeo-tomcat-maven-plugin</artifactId>
<version>1.1</version>
</plugin>
Step Two: After doing this, m2eclipse will configure the eclipse sysdeo tomcat plugin based on the dependencies declared in your project's pom.xml and projects available in the workspace.