AH ATM BGP CIR CoS CPE DES EBGP ESP FEC FR IDC IDEA IGP IP IPLC IPSec L2F L2TP LDP LSP MD5 MP-BGP MPLS OSPF PE PPP PPTP PVC QoS RD RIP RSVP SHA TE VCG VLAN VPDN VPN VR VRF Authentication header Asynchronous transfer mode Border gateway protocol Committed information rate Class of service Customer premise equipment Data encryption standard Exterior border gateway protocol Encapsulation security pay-load Forwarding equivalence class Frame relay Internet data center Ideal data encryption algorithm Interior gateway protocol Internet protocol International private leased circuit IP security Layer 2 forward Layer 2 tunnel protocol Label distribution protocol Label switching path Message-digest 5 Multi-protocol BGP extensions Multi-protocol label switching Open shortest path first Provider edge Point to point protocol Point to point tunnel protocol Permanent virtual circuit Quality of service Route distinguisher Router information protocol Resource reservation protocol Secure hash algorithm Traffic engineering Virtual connection gateway Virtual local area network Virtual private dialup network Virtual private network Virtual router VPN routing and forwarding 電信服務 VPN技術 網路