atmxServiceVlan
1.3.6.1.4.1.800.2.4.2.1.1.14
The Vlans for this service. Interpret this as a 16 bit field
per vlan: Trunking 1-32, PTOP Bridging 1, Classical IP 1.
For Vlan Cluster, it will depend on the encapsulation type
selected. If RFC 1483, only 1 vlan while Xylan ATM trunking
up to 32 vlans are allowed.
For 1483 Scaling Service, create it only with 1 group
and 1 vc thru this atmxServiceGroup. Adding Other group-to-vc
mapping should utilize the atmx1483ScaleGroup.