Fri Feb 19, 2021 4:23 pm
VLAN tagging is standardized (IEEE 802.1q) - it wouldn't make any sense for Mikrotik (or any other vendor) to reinvent the wheel.
Also, SwOS relies on purely HW-accelerated L2 processing - the switch chip takes care of all VLAN tagging/filtering, ACLs etc, and the small external ARM (or other arch) CPU is used only for the trimmed down Web GUI, configuration management, maybe SNMP as well (it's definitely not running Linux).