how to prevent the client to change the static IP Address which we provide?. probably one of the questions that you've come to mind. This setting is usually required for school networks. Often try to change-change client ip address, still greet their intentions know that does not get an IP address in the limit. So with this setting if client ip address that does not change according to what we give, they can not use the internet connection. Let us exploit mikrotik firewall functions.

You make bandwidth management with setting like this:

Client 1: IP 172.22.0.23, the limit of 64kbps download 256kbps upload limit
Client 2: IP 172.22.0.34, limit 1mbps download, 256kbps upload limit

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How to auto check ethernet on Mikrotik? Sometimes when you install a network cable to the ethernet to the mikrotik, do not know where ethernet is currently active.

example your router has 3 ethernet cards,
# NAME MTU MAC-ADDRESS ARP
0 R ether1 1500 00:04: AC: 25: CD: 5A enabled
1 R ether2 1500 00: B0: G0: C6: 47:6 C enabled
2 R ether3 1500 00:50:8 B: 0A: 57:1 A enabled

then type:

/interface ethernet set 0 disable-running-check = no
/interface ethernet set a disable-running-check = no
/interface ethernet set 2 disable-running-check = no

This will make a mark R on your router will be lost, and will appear again after the ethernet cable plugged into it. So it could be used to check which ethernet is currently active.

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