Good day everyone,
I have made a followup of the information that you provided to our service provider. I was particularly interested in this comment by tdw:
"If replacing the switches isn't an option you could move your distribution network onto a VLAN as most unmanaged switches are transparent to tagged traffic, then if the feed to a particular client router is incorrectly plugged into a LAN port it would offer DHCP untagged and be invisible anything on your tagged WAN network, so preventing other devices from obtaining an incorrect lease. It would, however, require reconfiguring all of your devices - could be scripted and thoroughly tested if you have remote access for deployment."
I confirm you that for now, upgrading these switches to new ones would not be accepted by upper management, so that door is closed altough I have required that all our future switches can be manageable.
So meanwhile we need to find a solution and the advice given by tdw seen above seems the best one to answer our needs.
So if I understand correctly:
1- We create a Vlan called let's say living quarters on our Mikrotik router.
2- in this Vlan
- we specifiy the mikrotik router as our main DHCP.
- we create the IP range as usual.
3- On the mikrotik router, I configure the uplink port that goes to one of our "dumb" switches stating the the only network is the VLAN called living quarters.(These swtiches have only one network anyway)
4- The switch receives this new instruction and apply the new settings on every single port.
5- All the "DLINK" routers reestablished their link with a new IP address provided by the DHCP address provided in the VLAn settings: The mikrotik router. (Here we will have a signal cut.)
6- happy ending where everyone is happy.
Does it goes like this?
Have a great day