No ping from LAN, no router, where to dig?

Question

Mikrotik

On Mikrotik, 4 ports are bridged into 1 under the network, except for one 4. On 4 (26 under the network), from the terminal on Mikrotik, the ping goes to 192.168.26.4. And from 1 subnet there is no ping until 26.4. the route is registered. Which way to look?

Answer 1

Come on scheme. There are no telepaths here.

Answer 2

Look first in Tools - Packet sniffer to see if packets go between networks. But I can vangonut, if you check from a machine with Windows, then by default ping is prohibited from more than one brudcast domain in the firewall. In general, when you ask a question about networks, always attach a graphical diagram, your "4 ports are bridged to 1 under the network, except for one 4. On 4 (26 under the network)" no one wants to decrypt.