Specifies an indication of the L2Vpn's VC encapsulation type: Options: 1: frameRelayDlciMartini(1) -indicates that the encapsulation type is Frame Relay DLCI(Martini Mode). 2: atmAal5SduVccTransport(2) -indicates that the encapsulation type is ATM AAL5 SDU VCC transport. 3: atmTransparentCellTransport(3) -indicates that the encapsulation type is ATM transparent cell transport. 4: vlan(4) -indicates that the encapsulation type is Vlan. 5: ethernet(5) -indicates that the encapsulation type is Ethernet. 6: hdlc(6) -indicates that the encapsulation type is HDLC. 7: ppp(7) -indicates that the encapsulation type is PPP. 8: cem(8) -indicates that the encapsulation type is SONET/SDH Circuit Emulation Service Over MPLS(CEM). 9: atmN2OneVccCellTransport(9) -indicates that the encapsulation type is ATM n-to-one VCC cell transport. 10: atmN2OneVpcCellTransport(10) -indicates that the encapsulation type is ATM n-to-one VPC cell transport. 11: ipLayer2Transport(11) -indicates that the encapsulation type is IP Layer2 Transport. 12: atmOne2OneVccCellMode(12) -indicates that the encapsulation type is ATM one-to-one VCC Cell Mode. 13: atmOne2OneVpcCellMode(13) -indicates that the encapsulation type is ATM one-to-one VPC Cell Mode. 14: atmAal5PduVccTransport(14) -indicates that the encapsulation type is ATM AAL5 PDU VCC transport. 15: frameRelayPortMode(15) -indicates that the encapsulation type is Frame-Relay Port mode. 16: cep(16) -indicates that the encapsulation type is SONET/SDH Circuit Emulation over Packet (CEP). 17: saE1oP(17) -indicates that the encapsulation type is Structure-agnostic E1 over Packet (SAE1oP). 18: saT1oP(18) -indicates that the encapsulation type is Structure-agnostic T1 (DS1) over Packet (SAT1oP). 19: saE3oP(19) -indicates that the encapsulation type is Structure-agnostic E3 over Packet (SAE3oP). 20: saT3oP(20) -indicates that the encapsulation type is Structure-agnostic T3 (DS3) over Packet (SAT3oP). 21: cESoPsnBasicMode(21) -indicates that the encapsulation type is CESoPSN basic mode. 22: tDMoIPbasicMode(22) -indicates that the encapsulation type is TDMoIP basic mode. 23: l2VpnCESoPSNTDMwithCAS(23) -indicates that the encapsulation type is CESoPSN TDM with CAS. 24: l2VpnTDMoIPTDMwithCAS(24) -indicates that the encapsulation type is TDMoIP TDM with CAS. 25: frameRelayDlci(25) -indicates that the encapsulation type is Frame Relay DLCI. 26: ipInterworking(64) -indicates that the encapsulation type is IP-interworking. 27: unknown(255) -indicates the unknown encapsulation type.