Locally Administered MAC Addresses

ExtremeXOS switches do not use a unique per-port MAC address when transmitting bridge protocol data units (BPDUs). As a result, switch management can become inaccessible when switch MAC addresses are learned on the wrong L2 path (corresponding to a blocking port). You can now direct the switch to generate locally administered addresses (LAA). When this feature is enabled, for Spanning Tree Protocol (STP), the source MAC address is changed to LAA MAC while transmitting the STP/RSTP/MSTP BPDUs. When LAA is enabled, the source MAC address is assigned as 06xx:xx:xx:xx;xx. The "06" replaces the first byte of the system MAC address.