This guide explains how to install and configure OnPremise SRT Server in an environment with multiple physical network interfaces, connected to different LANs or VLANs (untagged).
Before installing the ISO image, connect the LAN that has Internet access to LAN1 of the target machine.
If you don’t know which port is LAN1, connect one at random. During installation, the system will indicate whether it can configure it via DHCP. If not, connect another port and request automatic configuration again until you find the correct one.
In the web panel, open the Network tab and click LAN/WLAN Interfaces.
If the page appears empty, switch to another tab and back again. The network configuration should load.
You will see LAN1 connected and configured by DHCP. The rest of interfaces will be empty (no IP assigned).
For each additional interface, you only need to assign:
You do not need to assign gateways for LAN2 and above.
Example IPs:
192.168.100.44/24192.168.110.44/24192.168.120.44/24Set the IPs and press Save on each interface.
Then go to System and press Reboot to restart with the multi-network configuration.
After reboot, you can connect LAN2 and above to their respective subnets.
Any INPUT or OUTPUT created in the Streams tab can be assigned to receive/send packets only through one of the available interfaces.
However, this is strictly necessary only for UDP multicast. Other protocols use unicast addresses, so routing rules determine which interface is used without needing to specify it.
If you do not assign the interface for UDP multicast, the system will listen/send on all available interfaces.
To force the interface in UDP multicast, use this format in the protocol Address field:
LOCAL_LAN_IP@MULTICAST_GROUP_IP
Example:
If you want to send multicast to 238.0.0.5 using LAN2 with IP 192.168.100.40, then:
192.168.100.40@238.0.0.5