High Quality Content by WIKIPEDIA articles! Split Multi-Link Trunking (SMLT) is a link aggregation technology in computer networking designed by Nortel in 2001 as an enhancement to standard Multi-Link Trunking (MLT) as defined in IEEE 802.3ad. Link aggregation or Multi-Link Trunking (MLT) allows multiple physical network links between two network switches and another device (which could be another switch or a network device such as a server) to be treated as a single logical link and load balance the traffic across all available links.