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). Starting with ExtremeXOS 22.3, you can 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.
Only STP uses LAA MAC.
To direct the switch to generate unique locally administered MAC addresses, use the following command:
enable switch locally-administered-address
To disable generating unique locally administered MAC addresses, use the following command:
disable switchlocally-administered-address
To see the status of this feature, use the command:
show switch {detail}
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