Interface status script (Scripting noob)

RouterOS Scripting
1

Hi guys

I have policy based routing that routes all my DNS and HTTP(S) traffic via a pppoe interface. Some times this (ADSL) pppoe connection goes down and when it does I need to disable the default route with the routing mark for those packets.

My problem is I do not know how to read the interface status. I can write the script here, the way I think it should work, if someone can just help me by pointing me in the right direction regarding the interface status.

Here is my idea: (my syntax will be completely off)

:global ppp_int [/find interface name "pppoe-to-my-isp]

if( $ppp_int status != “connected” )
{
/ip route disable [/ip route find comment name=“route-via-some-gateway”]
}
else if( ( /ip route disable [/ip route find comment name=“route-via-some-gateway”] == disabled) and ($ppp_int status == “connected”) )
{
/ip route find comment name=“route-via-some-gateway” enable
}

I hope from the example above you guys can help me a bit.

Thanks in advance

2

use “gateway=pppoe-out1”, not “gateway=ip-address” - the route will be disabled automatically

3

Hi Chupaka

That is how it is setup at the moment.

Can I show you what I got?

Here are my mangle rules:

8 X chain=prerouting action=mark-routing new-routing-mark=route-via-adsl passthrough=no protocol=udp in-interface=Ethernet2 dst-port=53

9 X chain=prerouting action=mark-routing new-routing-mark=route-via-adsl passthrough=no protocol=tcp dst-address-list=!bypass-http-routes in-interface=Ethernet2 dst-port=80

And here is my default route for it (the pppoe does not get the default route added when it connects)
For some reason in console the /ip route print command does not show the packet mark, but it is there.

DST-ADDRESS PREF-SRC GATEWAY DISTANCE

2 S 0.0.0.0/0 pppoe-to-mweb 1

And then I have a lookup rule for that route

/ip route rule print

3 routing-mark=route-via-adsl action=lookup table=route-via-adsl

But still, if the ADSL fails, http and dns strill try to route via that link.

4

well… what version do you use? do you actually need that routing rule?.. it’s behaviour by default…

p.s. /ip route print detail

5

Well, if I change my mangle rules to:

Where in interface !pppoe-to-my-isp then it works. If the interface is down then the mangle rules become red.