We have 3 TSW202 in a ring configuration, via SFP ports. In the network topology, extra addresses can be seen from Teltonika mac namespace (20:97:27:). Yet, in System information on each of the switches, I could only see one mac address. Is there somewhere (api or GUI) a way to see these macs as well?
Hello,
Do you have MRP configured on these switches?
Also, could you clarify which MAC addresses you’re referring to, are these the bridge interface MACs, or the learned device MACs from the network?
Normally, all active MAC addresses should be visible in the ARP table (you can check via SSH/CLI using the command arp -a).
Best regards,
Yes, it’s MRP ring configuration. There are no other Teltonika devices on that subnet. Even the device clearly having two MACs (:26 and :30) lists only the :26 in Status → System → MAC Adresses. Is that lack of displaying it in the status intentional?
Hello,
Apologies for the delay.
What you are observing on the TSW in an MRP ring is expected behaviour, and it can definitely look confusing at first.
When MRP is enabled, the switch participates in the ring using multiple logical MRP service interfaces, even though the device itself has only one physical base MAC address, which is the only one shown under Status → System → MAC Addresses.
MRP creates additional MRM/MRC service MAC addresses that are automatically derived from the device’s base MAC using vendor-assigned OUI ranges. These MACs are used internally for MRP control frames and ring role signalling. Because they are functional / protocol interfaces rather than physical interfaces:
- they do not appear in the UI
- they do not show up in standard MAC listings
- but they do appear in network topology
This is why you see extra Teltonika prefixed MACs (e.g., …:26 and …:30) participating in the ring, even though only the base MAC is displayed on the status page.
Kind regards,