RUTM50 physical eth interface

NETWORKING SOLUTIONS
1

Hi everyone,

I’m considering purchasing the RUTM50. Based on the spec sheet, I understand that it has at least x2 physical interfaces (WAN and LAN), and if we include mobile and Wi-Fi, there are x4 physical interfaces. (is that correct?)

I also see that VLAN functionality allows logical segmentation of the x4 LAN ports. However, my question is:

Are all 4LAN ports connected to a single physical NIC, or does each port have its own dedicated NIC?
Which interfaces are actually implemented as physical interfaces? (WAN, LAN, mobile, Wi-Fi, or others?)

Relevant Spec Details:

  • WAN: 1 x 10/100/1000 Mbps port (IEEE 802.3, 802.3u, 802.3az, auto MDI/MDIX)
  • LAN: 4 x 10/100/1000 Mbps ports (IEEE 802.3, 802.3u, 802.3az, auto MDI/MDIX)
  • VLAN: Port and tag-based VLAN separation

I’d appreciate any insights. Thanks!

Relative topic
RUTX50 - Ports, interfaces, devices; logical and physical - anyone can explain?

2

Hello,

Are all 4LAN ports connected to a single physical NIC, or does each port have its own dedicated NIC?

Each LAN port is a part of a 5-port ethernet switch (actually 6-port with port 0 being connected to CPU). In the router’s operating system, this is indicated as eth0 interface representing all LAN ports.

WAN is a separate physical interface with the name eth1.

Each LAN port can be logically separated into virtual NICs by creating an untagged VLAN (also called port-based VLAN), described in a bit more detail here: https://wiki.teltonika-networks.com/view/RUTX50_VLAN#Port_Based

Each virtual interface created this way will be denoted as eth0.x, where x indicates the ID of the virtual interface. It does not add 802.1Q tag in the frame’s header, but is a rather logical separator, meaning it separates traffic based on the port, leaving the router responsible for internally managing the traffic flow to ensure proper isolation between virtual interfaces.

Which interfaces are actually implemented as physical interfaces? (WAN, LAN, mobile, Wi-Fi, or others?)

Your assumption is correct. RUTX50 has separate physical interfaces for WAN, LAN, mobile, 2.4GHz Wi-Fi ad 5GHz WiFI.

You can confirm this by logging into the router via SSH and executing the command:

  • ls -l /sys/class/net

It will list the network interfaces available on the router. Virtual interfaces will have /virtual/ in their paths.

Best regards,

3

The person is talking about RUTM50 not RUTX50. RUTM50 uses DSA architecture so lan ports can be separated without vlans and eth0 is not user visible with DSA.

4

Hello,
Based on the spec sheet for the RUTM50, you are correct that it has multiple physical interfaces. Here’s a breakdown:

Physical Interfaces:

WAN: 1 x 10/100/1000 Mbps port (IEEE 802.3, 802.3u, 802.3az, auto MDI/MDIX)

LAN: 4 x 10/100/1000 Mbps ports (IEEE 802.3, 802.3u, 802.3az, auto MDI/MDIX)

Mobile: 5G Sub-6 GHz SA, NSA, 4G (LTE)

Wi-Fi: 802.11b/g/n/ac Wave 2 (Wi-Fi 5) with data transmission rates up to 867 Mbps (Dual Band, MU-MIMO)

VLAN Functionality:

The VLAN functionality allows logical segmentation of the 4 LAN ports. This means you can create separate virtual networks within the same physical network infrastructure.

NIC Configuration:

All 4 LAN ports are connected to a single physical NIC (Network Interface Card). This is common in many routers where multiple LAN ports share a single NIC for cost and design efficiency.

Implemented Physical Interfaces:

The physical interfaces implemented in the RUTM50 include WAN, LAN, mobile, and Wi-Fi. Each of these interfaces serves a specific purpose:

WAN: Connects to your internet service provider.

LAN: Connects to your local network devices.

Mobile: Provides cellular connectivity.

Wi-Fi: Offers wireless connectivity for devices.

Best Regard,
Nathan