Wireless mesh networks are self organising and self healing @@ -48,8 +48,7 @@ the new project. A while back, the people at Hackeriet invited people from the Freifunk community to Oslo to talk about mesh networks. I came across this video where Hans Jørgen Lysglimt interview the speakers about this talk (from -youtube:
- +youtube): @@ -58,14 +57,14 @@ There are heaps of different protocols, and I am still struggling to figure out which one would be "best" for some definitions of best, but given that the community mesh group in Oslo is so small, I believe it is best to hook up with the existing one instead of trying to create a -completely different setup, and thus this have decided to focus on +completely different setup, and thus I have decided to focus on batman-adv for now. It sure help me to know that the very cool Serval project in Australia is using batman-adv as their meshing technology when it create a self organizing and self healing telephony system for disaster areas and less industrialized communities. Check out this cool video presenting that project (from -youtube: +youtube): @@ -76,7 +75,7 @@ packets across mesh networks, and OLSR, B.A.T.M.A.N. and B.A.T.M.A.N. advanced are protocols used by several free software based community mesh networks. -The batman-adv protocol is a bit special, as it provide layer 2 +The batman-adv protocol is a bit special, as it provide layer 2 (as in ethernet ) routing, allowing ipv4 and ipv6 to work on the same network. One way to think about it is that it provide a mesh based vlan you can bridge to or handle like any other vlan connected to your @@ -86,13 +85,13 @@ least since Debian Wheezy, and it is fairly easy to set up. A introduction is available from the Open Mesh project. These are the key settings needed to join the Oslo meshfx network:
-| Setting | Value |
|---|---|
| Protocol / kernel module | batman-adv |
| ESSID | meshfx@hackeriet | Channel / Frequency | 11 / 2462 | Cell ID | 02:BA:00:00:00:01 | -
The reason for setting ad-hoc wifi Cell ID is to work around bugs in firmware used in wifi card and wifi drivers. (See a nice post from @@ -126,3 +125,9 @@ commercial companies, even though Telenor discovered that it was hard to figure out a good business plan for mesh networking and as far as I know have closed down the experiment. Perhaps Telenor or others would be interested in a cooperation?
+ +Update 2013-10-12: I was just +told +by the Serval project developers that they no longer use +batman-adv (but are compatible with it), but their own crypto based +mesh system.