| 122 | a. ExoGENI nodes run a service called "neuca" that managed network interfaces on the node. To manually adjust the IP address, we must first disable neuca on both nodes. |
| 123 | {{{ |
| 124 | sudo service neuca stop |
| 125 | }}} |
| 126 | {{{ |
| 127 | #!html |
| 128 | <table id="Table_03" border="0" cellpadding="5" cellspacing="0"> |
| 129 | <tr> |
| 130 | <td> |
| 131 | <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/exogeni-logo.png?format=raw" width="50" height="50" alt="ExoGENI"> |
| 132 | </td> |
| 133 | <td>The ExoGENI "neuca" service controls a variety of network configuration details.</td> |
| 134 | |
| 135 | </tr> |
| 136 | </table> |
| 137 | }}} |
| 138 | b. Disable the IP on both of your nodes (being careful to disable IP on the data interface NOT the control interface). |
| 139 | In each of the terminals type: |
| 140 | {{{ |
| 141 | sudo ifconfig <data interface name> 0.0.0.0 |
| 142 | }}} |
| 143 | {{{ |
| 144 | #!html |
| 145 | |
| 146 | <table id="Table_01" border="0" cellpadding="5" cellspacing="0"> |
| 147 | <tr> |
| 148 | <td> |
| 149 | <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/warning-icon-hi.png?format=raw" width="50" height="50" alt="Warning"> |
| 150 | </td> |
| 151 | <td> |
| 152 | Be extra careful to disable the IP on the data interface, bringing down the IP on the control interface means that you will lose connectivity to your host. |
| 153 | </td> |
| 154 | </tr> |
| 155 | </table> |
| 156 | }}} |
| 157 | c. Try again to ping from the client to the server. In the terminal window of the client type: |
| 158 | {{{ |
| 159 | ping <server data IP addr> -c 5 |
| 160 | }}} |
| 161 | For example: |
| 162 | {{{ |
| 163 | ping 10.17.1.2 -c 5 |
| 164 | }}} |
| 165 | This time the ping should indicate that the destination is unreachable. |
| 166 | |
| 167 | |
| 168 | |
| 169 | |