Split Multi-Link Trunking (SMLT) is an improvement over Multi-Link Trunking (MLT), a method of link aggregation that allows multiple Ethernet links to be aggregated together, and handled as a single logical trunk. SMLT is the splitting of member links in a normal MLT trunk from an end device across two devices. These devices synchronize state across an Inter-Switch Link (IST) such that they appear to the connecting device to be a single device (switch block) and prevent any packet duplication. SMLT provides enhanced resiliency with sub-second failover while operating transparently to end-devices.
See also trunk.
