search

openNDS / mesh11sd

Mesh11sd is a dynamic parameter configuration daemon for 802.11s mesh networks.
GNU General Public License v2.0
33 stars 8 forks source link

Multi-hops mesh channel switching #14

Closed vigeruno closed 4 months ago

vigeruno commented 1 year ago

Multi-hops mesh channel switching Is it supported? or is it possible to implement it?

bluewavenet commented 1 year ago

@vigeruno Sorry, I will have to ask you to explain what you mean by "Multi-hops mesh channel switching".

Normally, all nodes in a given mesh network must be operating on the same channel or frequency range. Otherwise the nodes will be unable to communicate with each other.

It is possible to implement a channel tracking function to facilitate an operational channel change and there is closed source proprietary code that implements this, but I am not at all sure if this is what you mean.

vigeruno commented 1 year ago

@vigeruno Sorry, I will have to ask you to explain what you mean by "Multi-hops mesh channel switching".

Normally, all nodes in a given mesh network must be operating on the same channel or frequency range. Otherwise the nodes will be unable to communicate with each other.

It is possible to implement a channel tracking function to facilitate an operational channel change and there is closed source proprietary code that implements this, but I am not at all sure if this is what you mean.

https://github.com/o11s/open80211s/wiki/Mesh-Channel-Switching https://github.com/cozybit/iw/commit/d64a0ae1039e386304a5125614ac5f1001e977f8

bluewavenet commented 1 year ago

@vigeruno As far as I am aware, this was never implemented outside of o11s, certainly not in OpenWrt. Note o11s appears to be defunct with no updates for over 10 years as far as I can tell.

vigeruno commented 1 year ago

@vigeruno As far as I am aware, this was never implemented outside of o11s, certainly not in OpenWrt. Note o11s appears to be defunct with no updates for over 10 years as far as I can tell.

Do you think we can be able to make the channel change on command? It would be very useful

bluewavenet commented 1 year ago

@vigeruno There is a proprietary, closed source package that includes that functionality. The mesh11sd package is based on open-sourced parts of this. The Blue-Wave company will have to consider if the "channel changing" code could be open-sourced as well.

bluewavenet commented 1 year ago

@vigeruno mesh11sd v2.0.0 is released and available in the OpenWrt master branch. The build system bots are slowly rolling it out to 23.05 and 22.03.

This version supports remote admin via the mesh11sd command line. So it is possible to do your own scripting to change the channel in the config of every meshnnode and once all are done, reboot, restart network or run the wifi command on each meshnode in turn ( from the most remote first ). You could set a timer to restart each meshnode automatically, giving enough time to change them all, to make sure you do not isolate a section of mesh.

bluewavenet commented 1 year ago

@vigeruno Channel tracking is now implemented and the pre-release beta (v2.1.0beta) can be made available for testing if you are interested ;-)

bluewavenet commented 1 year ago

@vigeruno Note: This is autonomous channel tracking. The portal meshnode ( the one with an upstream link ) will have a "static" channel configured. All the peer nodes will autonomously track whatever channel the portal node is using. In effect, a channel change will ripple out into the mesh from the portal node.

vigeruno commented 1 year ago

@vigeruno Channel tracking is now implemented and the pre-release beta (v2.1.0beta) can be made available for testing if you are interested ;-)

Yes thanks I'm interested in doing tests.....

bluewavenet commented 1 year ago

@vigeruno The pre-release beta is here: https://github.com/openNDS/mesh11sd/releases/tag/v3.0.0-beta

bluewavenet commented 1 year ago

@vigeruno I bumped to v3.0.0 as there are major additions over previous versions.