Let me show the actual situation:
LAN 192.168.0.0/24 --------> Mikrotik Router (Bridge) --------> LANCITY
Cabel Modem (Bridge) ------> LANCITY Cabel Modem (Bridge)
-------> LAN 192.168.0.0/24
We have one LAN with this subnet: 192.168.0.0/24
Over a LANCITY Network 5 different locations are bridged together.
Everything works fine, but there is one big limitation on the LANCITY
Cable Modems. They only bridge the first 16 MAC Adresses
off the local ethernet subnet. That means that the first 16 ethernet
devices which will be registered by the lancity-headend
are bridged over the cable modem. The 17th and following will be blocked
until the cable modem is rebooted.
At this point the Mikrotik Router comes in. I’ve tried to setup MAC-NAT
with the srcnat-rule on the bridge interface of the mtr.
For my understanding of the documentation it should be possible to
masquerade the macaddresses from the different devices
on the left site of the mikrotik router with the mac-address of the mtr
itself. In this case there should only appear the
mac-address of the mtr at the right side of the bridge where only the
lancity-modem is plugged in.
I hoped that this setup will solve the limitation by the cable-modems.
But it didn’t work for me at all.
Is it possible to do this with a mikrotik router?
If yes, how should I setup up the nat-rules?
Thank you for your help.
Josef Schauer