Legacy Layer 2 Wan Encapsulation
DTE: data terminal equipment
DCE: data circuit terminal equipment
PVC: permanent virtual circuit – logical connection in frame relay network
DLCI: Data-link connection identifier – local identifier for each PVC
LMI – local management interface – signaling standard used to exchange information
DTE
[R1]
L
M
I
DTE[R2] <–LMI–> DCE Frame <–LMI–> DTE[R3]
Relay Switch
Point to Point OSPF 10 sec
Point to Multipoint OSPF 30 sec
