dhcp,critical,error dhcp alert

RouterOS General
1

i am getting error in my router log can any one help me to resolve this issue .
i have three different wan interface , the error coming on two wan interface which are “Multinet-ethnet2” “Brain-ethnet1”
i have attached error file please find
Error:
dhcp,critical,error dhcp alert on Multinet-ethnet2: discovered unknown dhcp server, mac C8:3A:35:01:38:50, ip 192.168.0.1
dhcp,critical,error dhcp alert on Brain-ethnet1: discovered unknown dhcp server, mac C8:D5:FE:1F:79:8C, ip 192.168.1.1
dhcp,critical,error dhcp alert on Multinet-ethnet2: discovered unknown dhcp server, mac 00:19:E0:66:9C:4D, ip 172.16.0.67
error1.jpg

2

You have set up a DHCP Alert in your DHCP Server settings.
If these servers are supposed to be running, I guess they are since this is on your wan you can add them to the valid servers list to avoid the warnings.
Or maybe you can switch the alert monitor to your lan. The wan port should be monitored by your isp for this kind of problems.

3

Thanks for your reply .
you mean i need to add my both wan interface MAC address in valid servers field?

4

Not your mac addresses of wan interfaces, but the mac addresses you see in the alert message.

5

thanks for your support this issue is resolve now .

can i ask you one question more ?

6

If I can answer ..

7

i have three different wan’s interfaces there are working fine but i can not ping that ipaddress which are bind at my end on wan interface form my lan side i.e

if my request will out form wan1 i can ping only wan ip address which bind at my side in wan1 router interface
i can not ping my wan 2 ip address which is bind my side in wan2 router interface .

i have using routing Mark option in routes for other two wans

8

I can not understand completely, but it can be a routing or firewall issue.

9

Are you mangling incoming packets according to wan from where they arrived and routing then the answers according the connection marks to the correct wan? If not, this can be the solution.

10

WAN Interfaces
Brain= wan1
Multinet = Wan2
PTCL= wan3

This is my route list

DST-ADDRESS PREF-SRC GATEWAY DISTANCE Routing Mark

0 A S 0.0.0.0/0 125.209.74.161 1 Multinet
1 A S 0.0.0.0/0 192.168.0.1 1 PTCL
2 A S 0.0.0.0/0 203.128.27.254 1 main
3 ADC 125.209.74.160/29 125.209.74.162 Multinet-ethnet2 0
4 X S 172.16.0.0/24 203.128.27.187 1
5 ADC 192.168.0.0/24 192.168.0.3 PTCL 0
6 ADC 192.168.2.0/24 192.168.2.3 Lan-ethnet-3 0
7 ADC 203.128.27.0/24 203.128.27.162 Brain-ethnet1 0

and this is my mangle configuration for shifting the lan traffic on wan 2, by default my lan traffic out from my wan1 when i need change my traffic i use this mangle config.

chain=prerouting action=mark-routing new-routing-mark=multinet passthrough=yes src-
address=192.168.2.39