Unicast FDB database incorrect

RouterOS General
1

Im having connectivitie issue in my network (some hosts kan ping an IP others cant) and i just found out that the issue is due to the Unicast FDB being incorrect

I have had a static entry in the past, but it look like this is still giving issues

[admin@sw05] /interface ethernet switch unicast-fdb> print 
Flags: X - disabled, I - invalid, D - dynamic, A - active 
 #    MAC-ADDRESS       PORT                      VLAN-ID ACTION                       MIRROR SVL        AGE ISOLATION-PROFILE QOS-GROUP                     
 0 DA 4C:5E:0C:00:85:D3 switch1-cpu                     0 forward                      no     yes          3 promiscuous       none                          
 1 DA 3C:D9:2B:06:CD:EA ether21-PP07-MicroServ...     110 forward                      no     no           3 promiscuous       none                          
[admin@sw05] /interface ethernet switch unicast-fdb>

The mac adres on interface ether21 is not there, it is on a different Mikrotik infact however it was a static entry in the past. The static entry is gone, but the switchchip does not agree. I cannot flush the entry as it return right away. I therefore cannot at a static entry to the correct interface as a work arround.

  • I disabled the interface
  • I have removed the master interface (RouterOS v6.40.4)
2

The reboot of the switch seem to do the trick. But it is very time consuming to find out the issue in the first place :frowning: