Hello,

It's my first time on a Mikrotik.

I have 4 WAN. (WAN1 - WAN2 - WAN3 - WAN4)

I need a script, when WAN1 is timeout, WAN2 takes over.
When WAN2 is timeout, WAN3 takes over, ....

Please help

Thanks you.

Your solution does not work the way I want.

I have for example 2 WAN, and I need a solution to automatically change from WAN1 to WAN2 if WAN1 no longer has access to the internet, not just disconnected.

So it must check if the internet always passes via a ping if it does not work it automatically changes interface (WAN1 to WAN2) and as soon as WAN1 to new internet it gets over it.
So I decided to try with a script. Except that it is not working properly. It does not change the distance and change the interface.

A solution for my problem ?

Thanks you !

My Script :

Code: Select all

:global MainIf ether1
:global RsrvIf ether2
:local PingCount 3
:local PingTarget1 8.8.8.8
:local PingTarget2 91.219.24.37
:local PingTarget3 213.59.5.110
:local PingTarget1R 8.8.8.8
:local PingTarget2R 80.68.243.243
:local PingTarget3R 8.8.4.4
:local MainIfInetOk false;
:local PingResult1 [/ping $PingTarget1 count=$PingCount interface=$MainIf]
:local PingResult2 [/ping $PingTarget2 count=$PingCount interface=$MainIf]
:local PingResult3 [/ping $PingTarget3 count=$PingCount interface=$MainIf]
:set MainIfInetOk (($PingResult1 + $PingResult2 + $PingResult3) >= (2 * $PingCount))

:local RsrvIfInetOk false;
:local PingResult1 [/ping $PingTarget1R count=$PingCount interface=$RsrvIf]
:local PingResult2 [/ping $PingTarget2R count=$PingCount interface=$RsrvIf]
:local PingResult3 [/ping $PingTarget3R count=$PingCount interface=$RsrvIf]
:set RsrvIfInetOk (($PingResult1 + $PingResult2 + $PingResult3) >= (2 * $PingCount))

:put "MainIfInetOk=$MainIfInetOk"
:put "RsrvIfInetOk=$RsrvIfInetOk"

if (!$MainIfInetOk) do={
/log error "Main internet connection error"
}

if (!$RsrvIfInetOk) do={
/log error "Reserve internet connection error"
}

:local MainGWDistance [/ip route get [find comment="Prov1"] distance]
:local RsrvGWDistance [/ip route get [find comment="Prov2"] distance]
:put "MainGWDistance=$MainGWDistance"
:put "RsrvGWDistance=$RsrvGWDistance"

#SetUp gateways
if ($MainIfInetOk && ($MainGWDistance >= $RsrvGWDistance)) do={
/ip route set [find comment="Prov1"] distance=1
/ip route set [find comment="Prov2"] distance=2
/interface disable ether2
/ip firewall connection tracking set enabled=no
delay 5
/ip firewall connection tracking set enabled=yes
/ip ipsec installed-sa flush sa-type=all
/log warning "Switch to main internet connection"
/interface enable ether2
}

if (!$MainIfInetOk && $RsrvIfInetOk && ($MainGWDistance <= $RsrvGWDistance)) do={
/ip route set [find comment="Prov1"] distance=2
/ip route set [find comment="Prov2"] distance=1
/interface disable ether1
/ip firewall connection tracking set enabled=no
delay 5
/ip firewall connection tracking set enabled=yes
/ip ipsec installed-sa flush sa-type=all
/log warning "Switch to reserve internet connection"
/interface enable ether1
}