Create an MLT before you create a split in the MLT.
To create an SMLT from an existing MLT, first shut down the MLT ports. Configure the MLT as SMLT, and then enable the ports again.
Important
Failure to perform this operation can lead to ports in STP blocked state and traffic loss.
If you are configuring SMLT with vIST, all the SMLT VLANs associated with vIST must have an I-SID.
Create an SMLT from an existing MLT to split physical ports between two switches to improve resiliency and provide active load sharing.
Important
To remove an SMLT configuration from the MLT on a vIST switch, first shut down the SMLT MLT ports on its vIST peer.
Failure to perform this operation can lead to Layer 2 loops.
Create an SMLT on MLT 1:
Switch:1(config)#interface mlt 1 Switch:1(config-mlt)#smlt