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Wireless Meshing

Below are a few things you should look at when diagnosing connections. These can help identify bad configurations or other errors.

IBSS

  • iw dev - do all the devices have matching BSSID and Channels
  • iw wlan0 station dump does it show stations
    • If they do then the peering between nodes is working
    • If they do not show up, this may just mean the drive does not report properly. For example the onboard Pi driver will not yield any results
  • sudo /usr/bin/mesh-adhoc - does it return any errors
    • If yes run sudo bash -x /usr/bin/mesh-adhoc - Thiw will help identify where the error occurs
  • If you set an IP address on wlan0 on both sides, can it ping in the clear
    • On Pi-1 run ifconfig wlan0 10.10.10.1/24
    • On Pi-2 run ifconfig wlan0 10.10.10.2/24
    • On Pi-1 run ping 10.10.10.1
    • On Pi-2 run ping 10.10.10.2
    • Does it say request timeout or does the ping succeed?

Mesh Point

  • iw dev - do all the devices have matching BSSID and Channels
  • cat /usr/bin/mesh-mesh - does the JOIN line have the correct mesh name
  • iw wlan0 station dump - does it show the stations
  • sudo /usr/bin/mesh-point - does it return any errors
    • If es run sudo bash -x /usr/bin/mesh-point - - This will help identify where the error occurs
  • If you set an IP address on wlan0 on both sides, can it ping in the clear
    • On Pi-1 run ifconfig wlan0 10.10.10.1/24
    • On Pi-2 run ifconfig wlan0 10.10.10.2/24
    • On Pi-1 run ping 10.10.10.1
    • On Pi-2 run ping 10.10.10.2
    • Does it say request timeout or does the ping succeed?

IPTunnel - Internet Exit Over Yggdrasil/CJDNS

  • Can client node ping CJDNS/Yggdsaill address of exit node
  • Can the exit node access the internet
  • Can the client node ping an IP address (not DNS)
    • IE: ping 1.1.1.1

IPTUNNEL - cjdns

  • Is IPTunnel installed (/usr/local/sbin/cjdns-setup exists)
  • Is the cjdns.iptunnel.server/client filename correct and on the correct device
  • Are the keys correct (ends in a k)
  • Does tun0 have an IPv4 IP address on server
  • Does tun0 have an IPv4 address on client
  • Can you ping the IPv4 addresses across the tunnel
  • Does the MASQUERADE line in iptables -L -v -n -t nat exist
  • Does MASQUERADE line in iptables -L -v -n -t nat show the right out interface

IPTUNNEL - yggdrasil

  • Is IPTunnel installed (/usr/local/sbin/yggdrasil-setup exists)
  • Is the yggdrasil.iptunnel.server/client filename correct and on the correct device
  • Are the keys correct (64 character alpha numeric)
  • Does ygg0 have IPv4 address on client
  • Can you ping the IPv4 addresses from the server
  • Does MASQUERADE line in iptables -L -v -n -t nat exist
  • Does masquerade line in iptables -L -v -n -t nat show the right out interface
  • check if routes have been added to yggdrasil
    • sudo yggdrasilctl getsourcesubnets - should be all your routes
    • sudo yggdrasilctl getroutes - should be 0.0.0.0 and ::/0