OPNsense <10gbe> Switch <25gbe> (devices A and B)

[steveHomeLab]

I have an OPNsense router's LAN (192.168.0.1) connected to 10gbe port on my switch and a couple of devices (A, B) connected to the same switch via 25gbe ports. OPNsense acts as a DHCP server. Does anyone know when devices A (192.168.0.2) and B (192.168.0.3) transfer files between each other are they limited by the 10gbe OPNsense router to switch connection or they can use full bandwidth of 25gbe switching capacity?

[Patrick M. Hausen]

They will use the full bandwidth. A router is not involved in communication of devices in the same broadcast domain.

[steveHomeLab]

Thank you so much for your reply. That is great news for me, however what if there are some firewall rules for LAN or some DNS server installed as a plugin in OPNsense? Shouldn't all traffic go through OPNsense 192.168.0.1 interface?

[Patrick M. Hausen]

Devices that share a network, e.g. a PC with 192.168.0.2 and a PC with 192.168.0.3 communicate directly with each other. No firewall rules, no filtering. Only traffic that goes through a firewall, e.g. from your LAN to the Internet or vice versa, can be filtered.

There are of course filtering switches if that is necessary.