There are consistency check in the Lenovo swtiches when they are participating in a MCLAG cluster.
Therefor the switche will shutdown the ports if there are an inconsistency between the MCLAG members.
First disable the consistency check on all members:
vlag config-consistency disable
Add the VLAN to all members
vlan xxx
name yyy
end
when the VLANs has been added to all the members, then enable the consistency check on all members again:
no vlag config-consistency disable
Remember to save the config🙂
wr mem