title: Unable to register a node on virtual machine using selenium Grid
body: <p>I am newbie with Selenium Grid therefore any help in this regard is much appreciated.</p>
  
  <p>I am using following version of selenium server:</p>
  
  <pre><code>selenium-server-standalone-2.20.0.jar
  </code></pre>
  
  <p>I've successfully manged to initialize the hub by entering this into cmd line:</p>
  
  <p><code>java -jar selenium-server-standalone-2.20.0.jar -role hub</code> </p>
  
  <p>I have also managed to register a node on my physical machine by executing the following command line:</p>
  
  <p><em>java -jar selenium-server-standalone-2.20.0.jar -role webdriver -hub <code>http://localhost:4444</code>/grid/register -browser browserName=iexplore,platform=WINDOWS -port 5556</em></p>
  
  <p>I've verified the above by going to <code>http://localhost:4444</code>/grid/console and can see that node has successfully been registered to port 5556.</p>
  
  <p>Now as next step, I am trying to register another node on Windows7 virtual machine(ip address=10.0.0.79) by running the following in cmd line:</p>
  
  <p><em>java -jar selenium-server-standalone-2.20.0.jar -role webdriver -hub <code>http://10.0.0.79:4444</code>/grid/register -browser browserName=iexplore,platform=WINDOWS</em></p>
  
  <p>unfortunately the above cmd doesn't register my request and I get the error: couldn't rgister this node : hub down or not responding</p>
  
  <p>I would be grateful if someone can please tell me what I am doing wrong.</p>
  
  <p>Cheers</p>