Authentication failed when using mongo to connect mlab.com
<p>I have a account on mlab.com.<br>
mlab-hosted deployment is running MongoDB 3.0.<br>
I install MongoDB 3.0.10 in my computer.<br>
I connect to mlab.com using this command:<br></p>

<pre><code>mongo ds019480.mlab.com:&lt;port&gt;/&lt;database&gt; -u &lt;username&gt; -p &lt;password&gt;
</code></pre>

<p>But I get error message:</p>

<pre><code>MongoDB shell version: 3.0.10-4-gbd56c2f
connecting to: ds019480.mlab.com:19480/larry-database
2016-04-08T08:45:27.101+0800 E QUERY    Error: 18 Authentication failed.
    at DB._authOrThrow (src/mongo/shell/db.js:1271:32)
    at (auth):6:8
    at (auth):7:2 at src/mongo/shell/db.js:1271
exception: login failed
</code></pre>

<p>How do I connect to mlab.com successfully?</p>