I have been trying to figure out who or where this MAC address is at in my neighborhood. I have set my Roof Mirotek node to 0 Db and scanned with the other Roof2 node to receive the following attached.
Any suggestions would be appreciated.
Greg
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Any suggestions would be appreciated.
Greg
K7SDW-VC-NP-HP-ROOF2 WiFi scan
Quit
| 40 | -55 | 175 | AREDN-10-v3 | N/A | 0A:BE:62:7A:B2:87 | Foreign Ad-Hoc Network |
I have 3 nodes on channel 183@20.
I did a Wi-Fi Scan at 26 dBm and at 05 dBm.
The SNR of the other ends did not change, but the phantom did!
Conclusion: The phantom is my test node.
73, Chuck
When you see a "foreign" or "My" adhoc network in wifi scan, there could have been multiple node's beacons that have been received, and show as only 1 row. All these nodes are all saying I am on this particular adhoc wireless network. Any node with the same channel, channel bandwidth, and SSID, can join this adhoc network. It is a layer 2 network. The nodes then setup their IP addresses and create the layer 3 routing with OLSR on top.
Joe AE6XE
dtdlink / mid2
model
MikroTik RouterBOARD SXTsq 5nD
uptime
1 day, 21:31
available space
flash = 10508 KB
memory = 33656 KB
Nodes = 577
The second line is the node I am connected to and the third line is what I am trying to understand. Does the firmware assign this "My Ad-Hoc Network" for the third line assign MAC address because I have my nodes dtd? Or as Joe states this is an assigned MAC for the IBSS specification. If so why would it be necessary to have it show up in a scan? Also the first line, I guess is an assignment for my "Roof2" node as a foreign "IBSS" MAC assignment? Some times I get a scan showing the 0A.........87 mac for a channel 10 mhz down. Non AREDN transmissions show up as white and not AREDN, so if a Foreign MAC how does one fine out what it is? Maybe the scan function could exclude the "non essential" MAC addressing if one is trying to determine what channel to set for a neighbor who forgot to put in their lat/long?
MAC Address: addresses assigned to a manufacture to uniquely identify every network interface device (wireless, ethernet, etc.) they create and sell. Every device is pre-configured by the manufacture and shipped to have a unique MAC address. The firmware of the device can change this address (and AREDN does so on some devices, due to conflicting addresses). MAC addresses are intended to be unique for every individual physical device.
IBSS Address: an address the firmware of a wireless 802.11 device dynamical creates when establishing a wireless adhoc network that multiple clients may connect to (layer 2). Every device that connects (in our case with same channel, channel width, and SSID) transmits out a beacon that says, "I'm part of this IBSS address network". When all (or the original-first-one live?) of these devices in the adhoc network turns off, the IBSS Address is lost.
A MAC Address and an IBSS Address are 2 different things, not to be confused with the other. A device will have both a MAC Address on the wireless chip at at all times, and when configured to be on an 802.11 adhoc network, also an IBSS address. The first device-node to be live on the channel, channel-width, and SSID, will create the IBSS Address. All the other device-nodes that connect will reuse and have the same IBSS Address.
"why would it be necessary to have it show up in a scan?": If you talk to a ham in the area, and ask him, is your "My Ad-Hoc Network 7E:BF:EE:F1:91:4A?". Then you have found a node in this foreign network. The IBSS Address allows groups to communicate and identify who is part of these different networks in the area. To see all the nodes in a give ad-hoc network, you need to connect to it and do a wifi scan -- to see all "Connected Ad-Hoc Stations".
Joe AE6XE
Change the channel from 175 to 158 on K7SDW-VC-NP-ROOF, then reboot. The node must be on same channel, channel-width, and SSID to connect to a foreign ad-hoc network. then, after connecting, a wifi scan will report all the clients on that network. Note, the device in this adhoc network on ch 158 has a "-28dBm" signal -- it must be very close to have that signal strength.
Joe AE6XE
73 de Gerg