[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] data communication equipment (DCE) 2nd data link connection identifier (DLCI) Frame Relay and Data Link Layer (OSI model) 2nd 3rd Data PDUs Data Service Unit and Channel Service Unit (DSU/CSU) ISDN and data terminal equipment (DCE) data terminal equipment (DTE) DCE (data communication equipment 2nd DCE (data terminal equipment DDR (dial-on-demand routing) ISDN and 2nd debug frame-relay command 2nd debug ppp chap command 2nd default masks (IP subnets) default values initial router configuration delay (network) routing protocols and demarcation designated bridge dial-on-demand routing (DDR) ISDN and 2nd discovery MAC addresses 2nd distance vector routing protocols 2nd 3rd compared to link state network discovery problems/solutions 2nd 3rd topology change handling DLCI (data link connection identifier) Frame Relay and DNS (Domain Name Service) TCP/IP and dotted decimal notation (IP addressing) 2nd drop cables DSU/CSU (Data Service Unit and Channel Service Unit) ISDN and DTE (data terminal equipment) dynamic routers 2nd dynamic routing protocols dynamic VLAN configuration 2nd |