In the near future the equipment will move to another location and I will exclude PPPoE.
Hopefully the problem is really in the ISP and the problem will be solved.

The problem was solved using a script on both routers: :local pingresultA [/ping 10.0.203.1 count=5]; :if ($pingresultA <= 0) do= { /interface/wireguard/disable wireguard203; /interface/wireguard/peers/disable 0; delay 600s; /interface/wireguard/enable wireguard203; /interface/wireguard/peers/enable...

Perhaps I should use a different VPN connection between these routers? For example, IPSec + L2TP?

My ISP fiber connection:

Could this be a problem? Maybe an ISP GPON terminal?

Thanks for your reply!
The ip address is always the same because I activated the Public IPv4 service. In this case, I shouldn't have NAT.

I found out empirically that if you turn off the interfaces and peers on both routers for 10-15 minutes and then turn them on, everything works. I think I have seen something similar in the past, if you turned off the wireguard interface and then turned it back on it fairly soon after. It didn't se...

If you're receiving a non-routable IPv4 address over pppoe?

yes

I found out empirically that if you turn off the interfaces and peers on both routers for 10-15 minutes and then turn them on, everything works.

The problem only occurs between Router-A and Router-B. I have another router that connects to the Internet via a USB modem and installs a tunnel similar to Wireguard to Router-B, there are no problems with it. This connection works even after a reboot. There is also a 4th router, which is located be...

Thanks everyone for the answers!
I post the configurations:

Added a similar rule to Mangle on Router-A:
Counter = 0

Thanks for your reply! I disabled persistent-keepalive on Router-B, changed the port on Router-A to 13231, pings pass, I reboot Router-A, pings do not pass, I see from the Firewall and Mangle counters that packets are arriving: Router-A wireguard info: wireguard203: [Router-B] public_key: Handshake ...

Good afternoon I configured Wireguard between two Mikrotik routers: Router-A: CCR2004-1G-2XS-PCIe v7.15.2 To access the Internet, a pppoe connection and a static IP address are used. /interface wireguard add comment=Router-B listen-port=52203 mtu=1420 name=wireguard203 /interface wireguard peers add...

Perhaps we misunderstand each other, I have classic VLANs configured and working, but I need to configure a Private VLAN (when one VLAN contains several others, but they are all located on the same IP network). I found information only about switches: https://wiki.mikrotik.com/wiki/Manual:Switch_Chi...

Thank you for your answer, I found the information on the vmware website: "For this reason, it is a requirement that each physical switch, where ESX with PVLANs are connected, must be PVLAN aware.", but in my case the router does not have a switch chip, is it possible to configure this? ht...

Hello, I have the following configuration: an ESXi 6.7 server running vCenter 6.7, connected directly to the CCR2004-1G-2XS-PCIe router via SFP ports (trunk). Private VLAN is configured on the server (screenshots of the settings in the attachment), virtual machines are added to this group of ports (...

Thanks for your reply.

Hello. I want to buy a CCR2004-1G-2XS-PCIe router for my home lab. Now I have two ESXi servers with Mellanox ConnectX-2 10GE (SFP+) network cards and a Cisco 2960G switch for the rest of my home devices. Suggested wiring diagram in attachments. First question: is CCR2004-1G-2XS-PCIe and Mellanox Con...

Good afternoon! My config: ESXi 6.7.0 19195723, VM CHR 7.5, VM Win10 Pro 21H2. VM CHR and VM Win10 connected to one vSwitch. The problem is the low speed of the UDP in one direction: Bandwitch Test on CHR ---> Bandwitch Test v0.1 on Win10 TCP - Tx/Rx Current: 863.8 Mbps/3.5 Gbps (CPU 90-99%) UDP - T...