Difference between revisions of "Mesh/Firmware/Overview"

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Mesh/Firmware/Overview (view source)

Revision as of 18:47, 5 May 2016

638 bytes removed ,  18:47, 5 May 2016
→‎Debugging
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   uci show notdhcpserver[0].addresses
   uci show notdhcpserver[0].addresses


= Debugging =
= Babeld =


Babel provides the entire routing table for the network.
[https://wiki.openwrt.org/doc/uci/babeld Babel] provides the entire routing table for the network.


   babeld -i
   babeld -i


This provides you with the data on every node on the entire network. Everything connected to the mesh that you can reach will be listed (nodes and extender nodes, not hosts).
This provides you with the data on every node on the entire network. Every node and extender node connected to the mesh that you can reach will be listed. babeld is the daemon that broadcasts routes that are available via the ad-hoc network connection (pplsopen.net-node2node). The age shown in the output provides how long ago the node announced it's existence on the network. When a node becomes too old, it gets dropped from the table.
 
babel is the daemon that broadcasts routes that are available via the ad-hoc network connection. The age provides how long ago the node announced it's existence. When a node becomes too old, it gets dropped from the table.


The mesh node will always try to route via the node that has the lowest metric. It tracks the metric also. The 'nexthop' value helps provide information used for routing. It's very lightweight, not complex.
The mesh node will always try to route via the node that has the lowest metric. It tracks the metric also. The 'nexthop' value helps provide information used for routing. It's very lightweight, not complex.


We're using a modified version of babel. It wasn't possible to dynamically configure babel while it is running, so we added that feature. Right now your mesh node is routing traffic to the exit node that SudoMesh / PeoplesOpen.net setup, which is the gateway from the VPN to the Internet.
SudoMesh uses a modified version of [https://github.com/sudomesh/babeld babeld], with support for adding or removing interfaces while babeld is running added.  
 
== Extender Node ==
 
In the sudowrt-firmware code on Github, there is a file under openwrt_config/packages.extender-node contains the packages that are installed in the extender node.
 
libopenssl, uhttpd and uttpd-mod-ubus (module for uhttpd that acts as proxy between HTTP interface and local ubus, running on port 80)
 
It would be ideal to have an SSL between. Marc has this ready, he'll apply this later after a ubus solution is implemented.


You do have to provide a password when accessing the ubus interface. That may not be setup with extender nodes.
== Exit Node ==


The extenders are registered with notdhcp, so it would also be best if we could ask notdhcp for the passwords needed to auth and communicate with the ubus HTTP. It's currently not possible to ask notdhcp for that information while it's running (but planned to be implemented).
Every home node routes traffic to the exit node that was setup for PeoplesOpen.net. This exit node acts as the gateway from the Virtual Private Network (VPN) used by PeoplesOpen.net to contain the SudoMesh network to the Internet.
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