Unable to add Layer 3 VLAN to MLT configured also with SPBM Backbone VLANs
On a device with VOSS 18.104.22.168, customer is unable to add a VLAN to an MLT configured also as SPBm NNI, receiving: "Error: SPBM NNI port/MLT port cannot be in VLAN which is not SPBM BVLAN". On a device with older VOSS release 22.214.171.124, they can add a VLAN to SPBm NNI MLT without any problem.
VOSS 6.0 and higher
Enable the nni-mstp bootflag by boot config flags nni-mstp command. That will allow the co-existence of BVLANs and non-BVLANs on an NNI MLT and turns it in effect into a brouter port. This bootflag was introduced in VOSS release 6.0.