使用batman-adv协议在Raspberry Pi上进行无线网状网络 [英] Wireless mesh networking on Raspberry Pi using batman-adv protocol
问题描述
因此，我正在尝试使用Raspberry Pi的Edimax EW-7811Un WLAN适配器和batman-adv协议来建立无线网状网络.
我尝试遵循以下基本设置指南:
- http://www.open-mesh .org/projects/batman-adv/wiki/Quick-start-guide
- http://mindofdes.blogspot .co.uk/2013/02/raspberry-pi-raspbian-wireless-and.html
不幸的是，当我到达需要从另一个节点ping一个节点的位置时，我得到了
无法访问目标主机.
运行batctl o命令显示
范围内没有蝙蝠侠节点"
但是，当运行iwconfig时，两个节点似乎都与我已设置的网络相关联，而当运行iwlist wlan0 scan时，我已设置的网络在这两个节点上均显示为单元格.
我现在对如何进行一无所知.我已经阅读了一些有关Linux WLAN适配器驱动程序的临时支持问题的文章.我的适配器正在使用RTL8192CU驱动程序.这可能是问题的原因吗?
P.S.我看过以下帖子，但不幸的是，这没有帮助.
/etc/network/interfaces的内容:
两个当前设置的节点具有相同的内容:
auto lo
iface lo inet loopback
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp
两个节点的/etc/wpa_supplicant/wpa_supplicant.conf内容:
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
ifconfig，iwconfig和两个节点的路由:
节点1
ifconfig
wlan0 Link encap: Ethernet HWaddr 80:1f:02:9b:bc:6c
inet addr:192.168.2.1 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:1 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes: 0 (0.0 B)
iwconfig
wlan0 IEEE 802.11bg ESSID:"pi-ad-hoc" Nickname:"<WIFI@REALTEK>"
Mode:Ad-Hoc Frequency:2.412 GHz Cell: 02:11:87:A1:CD:FF
Bit Rate:54 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=2/100 Signal level=2/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.0 * 255.255.255.0 U 0 0 0 wlan0
节点2
ifconfig
wlan0 Link encap:Ethernet HWaddr 80:1f:02:da:2e:ee
inet addr:192.168.2.3 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
iwconfig
wlan0 IEEE 802.11bg ESSID:"pi-ad-hoc" Nickname:"<WIFI@REALTEK>"
Mode:Ad-Hoc Frequency:2.412 GHz Cell: 02:11:87:2F:D6:FF
Bit Rate:54 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=2/100 Signal level=2/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.0 * 255.255.255.0 U 0 0 0 wlan0
我刚刚在Raspbian上使用两个Raspberry和相同的Wifi适配器(Edimax EW-7811Un)检查了您的配置.长话短说:我得到的结果与您相同.
我的发现如下
- 按照上述说明为adhoc设置一个Raspberry，并从iPad或Notebook ...连接正常
- 在Notebook上创建临时连接并让一个Raspberry加入...可以正常工作
- 为接入点设置一个Raspbery并从iPad或Notebook连接...可以正常工作
- 但是，在临时模式或访问点模式下设置两个Raspberry时，它们将无法彼此连接...不起作用！
- 如您所见，此处这些适配器的可用模式(rtl8192cu )不清楚.
- 其他来源可以通过类似的设置和上述的其他wifi adpater轻松创建临时连接.
似乎适配器驱动程序不允许这种连接.
请注意:使用这些适配器设置访问点需要特殊的已编译hostapd:http://www.open-mesh.org/projects/batman-adv/wiki/Quick-start-guide
Unfortunately, when I get to the point where I need to ping one node from the other, I get
Destination Host Unreachable.
Running the batctl o command displays
'no batman nodes in range'
However, when running iwconfig, both nodes appear to be associated with the network I've setup, and when running iwlist wlan0 scan, the network I've setup appear as cells on both nodes.
I'm now at a loss as to how to proceed. I have read some articles on issues with ad-hoc support for Linux WLAN adapter drivers. My adapter is using the RTL8192CU driver. Could this be the cause of the issue?
P.S. I have looked at the following post, but this was no help, unfortunately.
Edit: contents of /etc/network/interfaces:
Both currently setup nodes have the same contents:
auto lo
iface lo inet loopback
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp
Edit: contents of /etc/wpa_supplicant/wpa_supplicant.conf for both nodes:
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
Edit: ifconfig, iwconfig, and route for both nodes:
Node 1
ifconfig
wlan0 Link encap: Ethernet HWaddr 80:1f:02:9b:bc:6c
inet addr:192.168.2.1 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:1 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes: 0 (0.0 B)
iwconfig
wlan0 IEEE 802.11bg ESSID:"pi-ad-hoc" Nickname:"<WIFI@REALTEK>"
Mode:Ad-Hoc Frequency:2.412 GHz Cell: 02:11:87:A1:CD:FF
Bit Rate:54 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=2/100 Signal level=2/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.0 * 255.255.255.0 U 0 0 0 wlan0
Node 2
ifconfig
wlan0 Link encap:Ethernet HWaddr 80:1f:02:da:2e:ee
inet addr:192.168.2.3 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
iwconfig
wlan0 IEEE 802.11bg ESSID:"pi-ad-hoc" Nickname:"<WIFI@REALTEK>"
Mode:Ad-Hoc Frequency:2.412 GHz Cell: 02:11:87:2F:D6:FF
Bit Rate:54 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=2/100 Signal level=2/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.0 * 255.255.255.0 U 0 0 0 wlan0
I just checked your configuration with two Raspberries and the same Wifi Adapters (Edimax EW-7811Un) on Raspbian. Long story short: I get the same results as you do.
My findings are as follows
- Setting up one Raspberry for adhoc as described and connecting from IPad or Notebook ... works fine
- Creating an adhoc connection on the Notebook and let one Raspberry join ... works fine
- Setting up one Raspbery for accesspoint and connecting from IPad or Notebook ... works fine
- However when setting up two Raspberries either in adhoc mode or accesspoint mode wont connect to each other ... doesnt work!
- As you figured out by this source here the available modes of these adapters (rtl8192cu) are unclear.
- Other sources create adhoc connections easily with similar setup and other wifi adpater like described.
It pretty much seems like the adapters drivers won't allow this connection.
Please note: setting up an accesspoint with these adapters requires a special compiled hostapd: read here to find out how
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