I use 802.3ad bonding mode to have standard LACP interconnections with other devices from other vendors.
I am confused about the link-monitoring in the documentation https://help.mikrotik.com/docs/display/ROS/Bonding.
MII is configured by default on any new bonding interfaces, the documentation says that the MII driver is only local and monitors the interface status to determine the status of the bonding.
Does MII bypasses LACPDUs? That would defeat completely the point of LACP with LACPDUs. I can confirm with logs in the next post, but it seems that from some of my lab experiments yet that 802.3ad bonding with MII stays up even if I shutdown the Port-Channel of my other vendor device while leaving the physical interface of the Po up.
I would then use “none” for the link-monitoring but documentation does not say much about it in relation to 802.3ad.
The sentence “Note: some bonding modes require specific link monitoring to work properly.” is vague, but does it mean that some bonding modes does not require link monitoring especially 802.3ad?
Another goal is also to use a 802.3ad bonding for a MLAG peer port. Without the above in mind, do you consider it a good practice or are there issues or bugs and it would be more safe to use a physical interface for peer port?