1- In the core:
- MPLS enable on core interfaces
- LDP enable on core interfaces: to create MPLS LSP ( or RSVP for LDP over RSVP )
- extended LDP session ( targeted-LDP for Alcatel/Nokia ) enable on l0.0 interface
- Single IGP domain ( BGP or RVSP not needed )
2-
CCC encapsulation: same vlan at both end
TCC encapsulation: different vlan used by CE