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I have a debian/ubuntu boards that I connect them via an ad-hoc network with the following settings
board:~# cat /etc/network/interfaces
auto wlan0
iface wlan0 inet static
address 10.0.0.2
netmask 255.255.255.0
wpa-driver nl80211
wpa-conf /etc/wpa_supplicant.conf
board:~# cat /etc/wpa_supplicant.conf
# IBSS/ad-hoc network with WPA-None/TKIP.
ctrl_interface=/var/run/wpa_supplicant
ap_scan=1
network={
ssid="adhoc_test"
mode=1
frequency=2412
proto=WPA
key_mgmt=WPA-NONE
pairwise=NONE
group=TKIP
psk="abcdefgh"
bssid=F8:D1:11:52:0C:4E
}
These configurations creates an ad-hoc wlan, however, the nodes often gets different cell ID so that they cannot communicate with each other. To prevent it I added bssid=F8:D1:11:52:0C:4E line, however, no node get this predefined cell ID when they get the cell ID.
My question is that how can I prevent nodes to get different cell IDs? why bssid line does not work in the ad-hoc mode?
P.S. I tried these settings on ubuntu and debian dist. that have 3.2 and 3.4 kernels. wpa_supplicant versions that I used were 0.7, 1.0, and 2.0 all did not work. For the chipset, I am using Atheros AR9271 chipset for the wifi module.
975
Ad-hoc mode refers to a wireless network structure where devices can communicate directly with each other. It is an additional feature that is specified in the 802.11 set of standards, which is referred to as an independent basic service set (IBSS). This type of wireless network is also called peer-to-peer mode.
Ad-hoc networks are decentralized, self-organizing networks capable of forming a communication network without relying on any fixed infrastructure. Each node in an ad-hoc network is equipped with a radio transmitter and receiver which allows it to communicate with other nodes over wireless channels.
An ad hoc network is a network that is composed of individual devices communicating with each other directly. The term implies spontaneous or impromptu construction because these networks often bypass the gatekeeping hardware or central access point such as a router.
Use ap_scan=2 and remove the bssid= line from the configuration.
200
the problem was that previous versions of wpa_supplicant does not support the bssid, installing wpa_Supplicant 2.0 solved the problem!
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