Hi Pushpendra,
     The switch vlan (dot1q) table is common for all pvlan, vman,  vlan aggr and others.
     create vman dt tag 2 -àouter  tag 
     If switch has same tag 2 configured for other vlan  we could not able to use the same tag. So it must be different tag number than the  local vlan.
     configure vman ethertype 0x8100 
     This is for outer ether type and  you can configure other ether types as well.
     Note: Ports added to Layer 2 VPN service  VPLS/VMAN should not be part of PVLAN or VLAN
  aggregation.
         
    Thanks,
    Suresh.B