This object indicates what is associated with the MA.
The value of this object can be:
mapVlan: indicates that a VLAN is associated with the current MA.
mapVsi: indicates that a VSI is associated with the current MA.
mapL2vc: indicates that an L2VC is associated with the current MA.
unbind: indicates that the MA is not associated with any service instance.
mapCcc: indicates that a CCC is associated with the current MA.
By default, the value is unbind.