EoIP layer2

RouterOS Forwarding Protocols
1

Hey all

((sorry if i am posting in the wrong forum)please move my post admin)

How to do EoIP? Yes I know the n00b should start with search the web

But the n00b did not find what he was looking for

So how do I do EoIP?
At my house I got a mikrotik router

At my sister’s house she got a combined modem and router from there ISP
my plan is to put a computer with routerOS on her network and not change any of her devices config. Is that possible (need to talk with her devices at a Layer 2)???

or do I need to put everything behind the computer with routerOS??

-The n00b

2

EoIP only works with Mikrotik routers on both ends. :slight_smile:

-tp

3

it is mikrotik routerOS I mean

4

And for what you Need EOIP?
What do. You want to do?

5

try to do and you will find out.

6

The only one reason for EoIP would be PPPoE on the other end, but I don’t think you need this.

7

Layer2 between two locations that are otherwise independent of each other is almost always a bad idea.
Go for a routed connection instead (use GRE tunnel interfaces, put a /30 of private IP addressing on the link, and route each site’s LAN addresses across the tunnel.

If you use 192.168.1.X/24 at your house and your sister’s house uses 192.168.2.X/24, here’s a quick example of what to do:

Your house:
/ip address add address=192.168.255.1/30 interface=gre1
/ip route add dst=192.168.2.0/24 gateway=192.168.255.2

Sister’s house:
/ip address add address=192.168.255.2/30 interface=gre1
/ip route add dst=192.168.1.0/24 gateway=192.168.255.1

Then make sure the NAT rules won’t apply to packets going through the tunnel interfaces, and also make sure that the FILTER rules permit packets in/out of the tunnel interfaces, and you’ll be set.

The #1 reason layer 2 is bad is that both sides will have their own DHCP server, and these will fight each other for supremacy. (Like Highlander, there can be only one) - If you must use layer 2, then perhaps only the device requiring layer2 can be bridged, while the rest of your sister’s LAN can be its own network.