MikroTik

Posted: **Tue Sep 24, 2019 4:38 pm**

I have several CRS connected with 10G fiber using the default config.
Now every switch is listed twice in IP neighbors: one time with interface MAC and switch model and the second line is the bridge MAC without any additional information and 0 uptime.

Is this a bug or is there a way to hide those entries?

bridge.png

Posted: **Tue Sep 24, 2019 5:08 pm**

I think that's because you run neighbour discovery on "all" interface list.
Create a list containing only the bridge (or only physical interfaces).
Then open "discovery settings" and choose that list.

Posted: **Sat Feb 22, 2020 11:07 am**

Same issue, suggested solution doesn't help. Hardware CRS109, CRS125, RB960PGS.
The lists duplicate items always contain the bridge mac address without proper details and the discovery interface mac address with proper details. (just like in the original op post)

All running long-term current

[admin] > /system routerboard print   
       routerboard: yes
             model: CRS125-24G-1S-2HnD
     serial-number: x
     firmware-type: ar9344
  factory-firmware: 3.41
  current-firmware: 6.45.8
  upgrade-firmware: 6.45.8

Posted: **Thu Mar 05, 2020 6:58 am**

There are other threads about this same issue. It was introduced in an upgrade version within the past six months or so. It's pretty clearly a bug.

MikroTik

CRS default config: Bridge and Interface MAC in IP Neighbors

CRS default config: Bridge and Interface MAC in IP Neighbors

Re: CRS default config: Bridge and Interface MAC in IP Neighbors

Re: CRS default config: Bridge and Interface MAC in IP Neighbors

Re: CRS default config: Bridge and Interface MAC in IP Neighbors