| | 1 | = Using Aruba sniffers = |
| | 2 | |
| | 3 | == Purpose == |
| | 4 | The ORBIT grid has four Aruba sniffers at the four corners that can be configured to sniff specific channels and report '''every''' sniffed packet to the database. |
| | 5 | This gives the experimenters an independent framework to correlate 802.11 traffic during the course of the experiment for sanity checking as well as verifying the expected outcome of the experiment. |
| | 6 | |
| | 7 | == Nomenclature == |
| | 8 | The sniffers have been assigned the following IP addresses |
| | 9 | |
| | 10 | || Sniffer || IP || Position || |
| | 11 | || aruba1-1 || 10.2.1.1 || Near node1-20 || |
| | 12 | || aruba1-4 || 10.2.1.4 || Near node1-4 || |
| | 13 | || aruba4-1 || 10.2.4.1 || Near node20-20 || |
| | 14 | || aruba4-4 || 10.2.4.4 || Near node20-1 || |
| | 15 | |
| | 16 | == Usage == |
| | 17 | Sniffers are already up and running. '''Currently they work only on b/g channels'''. Sniffers can be set to listen to a specific channel by using the following command |
| | 18 | from internal4 or idb1 |
| | 19 | |
| | 20 | {{{ |
| | 21 | telnet 10.2.1.4 |
| | 22 | #> echo "Channel: 11" >> /proc/net/wifi0/Config |
| | 23 | }}} |
| | 24 | |
| | 25 | == Backend data collection == |
| | 26 | |
| | 27 | In order to start collecting frames in the database, you need to be on '''internal4.orbit-lab.org''' |
| | 28 | |
| | 29 | * Download the following file to your local directory and call it config.xml |
| | 30 | {{{ |
| | 31 | <project id="monitor"> |
| | 32 | <measurements> |
| | 33 | <db id="monitor" host="10.10.0.50" user="orbit" password="orbit"/> |
| | 34 | <multicast-channel addr="224.10.10.1" port="7000" iface="eth1"/> |
| | 35 | </measurements> |
| | 36 | </project> |
| | 37 | }}} |
| | 38 | |
| | 39 | * Launch the following application from local directory |
| | 40 | {{{ |
| | 41 | monitor -c config.xml -n internal4 -i eth2 |
| | 42 | }}} |
| | 43 | |
| | 44 | The sniffed packets are reported to the database named ''monitor'' under the table ''frames'' |
| | 45 | |
| | 46 | == Capture Schema == |
| | 47 | |
| | 48 | || Field || Type || |
| | 49 | |
| | 50 | || id || mediumint(9) || |
| | 51 | || monitor_id || varchar(32) || |
| | 52 | || channel || int(11) || |
| | 53 | || flag || int(11) || |
| | 54 | || rate || int(11) || |
| | 55 | || snr || int(11) || |
| | 56 | || type || int(11) || |
| | 57 | || sub_type || int(11) || |
| | 58 | || duration || varchar(32) || |
| | 59 | || dst_addr || varchar(32) || |
| | 60 | || src_addr || varchar(32) || |
| | 61 | || receiver_addr || varchar(32) || |
| | 62 | || frag_num || int(11) || |
| | 63 | || seq_num || int(32) || |
| | 64 | || timestamp || varchar(32) || |
| | 65 | || frame_description || varchar(32) || |
| | 66 | || beacon_timestamp || varchar(32) || |
| | 67 | || ssid || varchar(32) || |
| | 68 | |
