Yes, we have a VPN for some employees and a Exchange server too. We have the outsorced DNS and we will change it to the new public IP after we get conection.Since no one familiar with Movistar's habits seems to wander around, let me ask you a question, because to debug a blackbox is not easy even for a network specialist, leaving aside regular users.
Should the static public IP be used to access some server in your premises remotely (web server, VPN connection, anything where you set up the public IP of your connection to a web browser or anything else on a remote PC or mobile)?
OK. In that case:Yes, we have a VPN for some employees and a Exchange server too. We have the outsorced DNS and we will change it to the new public IP after we get conection.
I am familiar with the configuration. The problem is that the movistar fiber uses VLANs after the ONT. If your previous configuration is as you said (ONT<->Mikrotik) the configuration of the Mikrotik is using VLANs and it gets the public ip directly. If now you have a new hardware interconnections the Teldat removes the VLAN tags, gets the IP and does NAT. The configuration for the Mikrotik has to be different unless you remove Teldat+Switch Movistar.Hello everyone.
First of all, I'm a noob at networking. I'm an electrician and I've been forced to take care of the company network because our technician recenly got corona, so I'm sorry if I can't understand you perfectly or I make a mistake trying to explain my case.
Recently in my workplace we changed to Movistar Fusión Empresas (I'm from Spain). Before that, we worked with a ONT + Mikrotik (RB750GL) and a static IP. Now the internet provider installed a new ONT, a Teldat and a Switch and changed the Static IP (for example: 184.108.40.206). The structure stay as follows: ONT - Teldat - Switch Movistar - Mikrotik - Local network. When I plug in the MikroTik to the switch we don't have connection. I've tried to factory reset the device (we have backups saved), changing the vlan 3/6 to 20/21 (data and VoIP) and trying several ports, but I cannot make it work.
Again, I'm sorry if I missed any crucial information. I didn't study networking, I just have to deal with my boss decisions.
I don't think the Teldat is in bridge mode. When I plug in a laptop directly to the Movistar' Switch I get the address 192.168.1.X, so it must be in router mode.You should have put VLAN 20 at the ethernet port connected to the switch and the PPPoE connects to VLAN 20. Is the Teldat/switch in bridge mode then you can use PPPoE and if not you let the stuff from Moviestar do the work.
I assume that VOIP is handled by the Teldat/Moviestar switch itself.
So what happens if you attach a DHCP client directly (no /interface vlan in between) to Mikrotik's ether1 rather than a fixed address? Does it get a dynamic one too?When I plug in a laptop directly to the Movistar' Switch I get the address 192.168.1.X, so it must be in router mode.
My guess would be that if you disconnect/unplug the Teldat router and connect straight away the ONT to port 1 of the Mikrotik (which is how I guess things were installed before), things will work:First of all, thank you all for your help.
Sadly I can't try your solutions untill tomorrow (I have my own work as electrician and the company doesn't stop until 22:00). The only moment I can touch the network without being yelled is at lunch break. Tomorrow I'll tell you, every idea is welcomed.