Recovering a MikroTik Switch After VLAN Misconfiguration Lockout
After enabling VLAN filtering on my MikroTik CRS310-8G+2S+ switch with an incorrect configuration, I lost all management access. The switch was unreachable via SSH, web UI, and ping. This post documents the recovery process using MAC-Telnet to regain access at Layer 2. The Problem The switch had VLAN filtering enabled with the uplink port (ether5, connected to OPNsense) configured as tagged for VLAN 1 when it should have been untagged. This meant: ...