Additional encapsulations can be set for data packets.
- SNMP ID:
 - 2.2.4.2
 - Console path:
 - Setup > WAN > Layer
 - Possible values:
 - TRANS
 - Transparent: No additional encapsulation
 - ETHER
 - Ethernet: Encapsulation as Ethernet frames.
 - LLC-MUX
 - Multiplexing via ATM with LLC/SNAP encapsulation as per RFC 2684. Several protocols can be transmitted over the same VC (virtual channel).
 - VC-MUX
 - Multiplexing via ATM by establishing additional VCs as per RFC 2684.
 
- Default:
 - ETHER