My Router Hangs :(

[emme]

Ciao,

My DDWRT sometimes hangs without an apparent reason (probably it reaches the max connections without closing them... )

so Instead of schedule a reboot I want to manage a reboot on demand.

The router itself has a whatchdog deamon, but since it hangs... it is quite useless!
So I decide to setup a workaround to check connectivity and taka action if needed.

The requirements are:

- A ping Hardware and device (I use 8.8.8.8 to check internet connectivity)
- A plug (I use ZWave, but it could be a GPIO with a rele or whatever you want, but NOT a wifi/network device!!)

the scripts runs once a hour anche check the ping device...
if it is off for more that 5 minutes then it means internet in unreachable due to the router, so let's reboot it.
It does this for max 3 times, then, as soon as the network is back reachable, it reset the counter.

Hope you will find this interesting:

Code: Select all

local maxRetry      = 3                 -- Max Retries before quit rebooting the router
local waitSec       = 30                -- Seconds to wait before powering back up the router
local routerPingDev = 'PING_ROUTER'     -- Router Ping Device (see Ping Hardware)
local routerPlugDev = 'PLUG_ROUTER'     -- Router Plug Device 

return {
   on = {
      timer = {'Every 60 minutes'}
   },
   
   data = {
		actRetry = { initial = 0 }
   },
   
   execute = function(dz)
		local rtrActive = dz.devices(routerPingDev)
		local rtrDevice = dz.devices(routerPlugDev)

		if rtrActive.state == 'Off' and rtrActive.lastUpdate.minutesAgo >= 5 then 	' Reboot
			dz.data.actRetry = dz.data.actRetry + 1
			if 	dz.data.actRetry <= maxRetry then 
				dz.notify('Rebooting the router', 'Looks like LAN/WAN are unreachable... rebooting the router for the '..dz.data.actRetry..'time[s]')
				rtrDevice.switchOff()
				rtrDevice.switchOn().afterSec(waitSec)
			end 
		elseif rtrActive.state == 'On' and dz.data.actRetry ~= 0 then 
			dz.data.actRetry = 0
		end 
   end
}

not yet tested....
I'm at work right now and my router.... well... yes... it hanged this noght!