Link Layer Discovery Protocol (LLDP) Redundancy Supported on Stacking

The Link Layer Discovery Protocol (LLDP) allows stations attached to a 802 LAN to advertise, to other stations attached to the same 802 LAN, the major capabilities provided by the system incorporating that station, the management address or addresses of the entity or entities that provide management of those capabilities, and the identification of the station's point of attachment to the 802 LAN required by those management entity or entities.

ExtremeXOS and Switch Engine 31.6 introduces active redundancy support for LLDP on stacking.

LLDP information (for example, LLDP neighbors, Fabric Attach elements and assignments) is continuously synchronized from the primary to the backup nodes. In case of failover, the backup becomes the primary node, with all existing LLDP information retained. Existing LLDP and Fabric Attach neighbors are not re-learned. Because Fabric Attach assignments are retained, there is no impact on the traffic during failover.

Note

Statistics information is not synchronized to the backup. LLDP and Fabric Attach statistics start from empty on failover.