98 | | }}} |
| 98 | |
| 99 | <table id="Table_03" border="0" cellpadding="5" cellspacing="0"> |
| 100 | <tr> |
| 101 | <td> |
| 102 | <img src="http://groups.geni.net/geni/attachment/wiki/GENIExperimenter/Tutorials/Graphics/Symbols-Tips-icon.png?format=raw" width="50" height="50" alt="Tip"> |
| 103 | </td> |
| 104 | <td> |
| 105 | <ul> |
| 106 | <li>If you get a "Command not found " error when executing standard commands like `ifconfig` add `sbin` to your path: |
| 107 | <pre> |
| 108 | export PATH=$PATH:/sbin |
| 109 | </pre> |
| 110 | </li> |
| 111 | <li>Remember that you can use “ifconfig” to determine which Ethernet interface (e.g., eth0) is bound to what IP address at each of the nodes.</li> |
| 112 | <li>In order to enable IP forwarding of packets on a node you have to execute the following command: |
| 113 | <pre> |
| 114 | sudo sh -c 'echo 1 > /proc/sys/net/ipv4/ip_forward' |
| 115 | </pre> |
| 116 | </li> |
| 117 | <li>A new slice will always be in its initial state with NO routing set up!</li> |
| 118 | <li>A useful tool to debug the packet flow is [http://www.tcpdump.org/ tcpdump]. In order to install it run: |
| 119 | <pre> |
| 120 | sudo apt-get install tcpdump |
| 121 | </pre> |
| 122 | </li> |
| 123 | </ul> |
| 124 | </td> |
| 125 | |
| 126 | </tr> |
| 127 | </table> |
| 128 | |
| 129 | }}} |