When I attempt to mirror port 3 to port 8, I get the error the subject line. I get this error if I do all or only one of the following: check Mirror Ingress; check Mirror Egress and/or select another port for Mirror Egress Target. For the sake of diagnosing the problem, I have attempted the same process with other ports being mirrored to other target port (on the same switch chip). I have tried changing the storm rate to numerous numbers and have tried all of this both with “Limit Broadcasts” checked and unchecked.
I am confident that I am missing something obvious because I have used port mirroring on this router and other MT hardware. On the other hand, my search for “storm rate not supported” in relation to Mikrotik resulted in practically no useful results.
Any tips on where to look next will be much appreciated.
Not an expert in this field, but my initial thought is if ports 3 and 8 are in the same bridge. Off hand, I would think that having both the mirrored port and mirror target in a bridge would cause essentially a feedback loop.
@k6ccc not a bad thought. In fact, bridge settings were my first thought, too. When I first set this up, I confirmed that port 8 was not included in a bridge. When that didn’t work, I tried it with port 8 included in the bridge just to make sure, and that didn’t change the outcome.
I should have included this in my OP: if I change the Storm Rate, I get the same message quoted in my subject line, but it appears the change sticks notwithstanding the error message. Basically, if I change any settings under Switch → Port tab → [#] Port, I get the error message.
That was one of the first things I checked, but I’m glad you posted the block diagram because seeing it made me wonder about the interplay of the switch chip and bridge for my LAN where the port being mirrored (ether 3) is both on the same switch chip as the target port (ether and also a member of the bridge for my LAN that includes off-switch ports (sfpplus1).
It would be prudent for me to attempt mirroring the port again with a simplified setup, i.e., without any ports active other than WAN (ether1) and the bridge for my lan (ether2-7) and a target port on the same switch (ether8).
I think the error message, which barely shows up in any search results, threw me for a bit a loop.
I moved what was connected to the SFP+ ports to 1g ethernet ports on switch one and removed the sfp+ ports from the bridge.
Now my current setup is WAN on ether1, LAN bridge on ether2-7, and the mirror target part on ether8.
I continue to receive the same error rate when I try to mirror a port.
I note that I get the same error when I attempt to change the storm rate to anything other than 100%. However, based on the Switch → Port table, the change in storm rate sticks notwithstanding the error message. The same is not true when I attempt to mirror a port or select a port as a target.
On a whim, I tried changing the settings via CLI and it worked without a hitch according to the switch->ports table in Winbox, the stats for the mirror target port, and observing the mirror target port with Wireshark.
After making the changes, Winbox indicated all of the options I was trying to select have been changed to what I originally intended. And of course, I tried changing the mirror settings on another port using Winbox, and it failed with the same error quoted in my subject line.
Disregard my last post. Although changing the mirror port settings via CLI caused both Winbox and CLI to report mirroring was activated, it was not successful.
I reset the router in the hopes that would straighten it out, with no luck. After that, I did a netinstall to cover all bases, and again no luck.
I note that I also receive the error message in response to changing settings in the Switch menu other than those pertaining to port mirroring. For example, if I deselect Limit Broadcast under Switch → Port, I receive the error message in the subject line. However, the change sticks after I close the window. When I reopen the window and recheck Limit Broadcast, the error message once again is produced.
and also a member of the bridge for my LAN that includes off-switch ports (sfpplus1).