| 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 | }}} |
