Glossary 6PE IPv6 Provider Edge router. An MPLS IPv4 core network that supports IPv6 domains which communicate over an IES service. 6VPE IPv6 Provider Edge router with IP-VPN Services. An MPLS IPv4 core network that supports the communication using IPv6 VPRN services. AA Application Assurance AARP Application Assurance Redundancy Protocol ARP Address Resolution Protocol Bridged CO Bridged Central Office B-DA Backbone destination MAC address BFD Bi-Directional Forwarding Detection BGP Border Gateway Protocol BITS Building Integrated Timing Supply B-MAC The backbone source and destination MAC address fields defined in the 802.1ah provider MAC encapsulation header BMCA Best Master Clock Algorithm BNG Broadband Network Gateway BSA Broadband Service Aggregator BSAN Broadband Service Access Node BSM Basic Subscriber Management BSR Broadband Service Router BTV Broadcast TV B-VPLS Backbone VPLS CBS Committed Burst Size CCM Continuity Check Messages CE Customer premises equipment dedicated to one particular business/enterprise. CHAP Challenge-Handshake Authentication Protocol CIR Committed Information Rate C-MAC Customer MAC CO Central Office CSC-CE Peering router managed and operated by the Customer Carrier that is connected to CSC-PEs for purposes of using the associated CSC IP VPN services for backbone transport. The CSC-CE may attach directly to CEs if it is also configured to be a PE for business VPN services. CSC-PE A PE router managed and operated by the Super Carrier that supports one or more CSC IP VPN services possibly in addition to other traditional PE services. CSPF Constraint-Based Shortest Path First DE Discard-Eligible DEI Drop Eligibility Indicator DHCP Dynamic Host Configuration Protocol DHCPv6 Dynamic Host Configuration Protocol for IPv6 DSCP Differentiated Services Code Point eBGP External Border Gateway Protocol Epipe Ethernet P2P VLL Service eLER Egress Label Edge Router ERO Explicit Router Object ESM Enhanced Subscriber Management ESMC Ethernet Synchronization Messaging Channel FEC Forwarding Equivalence Class FPP Floor Packet Percentage FRR Fast Reroute GMPLS Generalized Multi-Protocol Label Switching GNSS Global Navigation Satellite System GPS Global Positioning System (the GNSS operated by the US Government) iBGP Interior Border Gateway Protocol IA-NA Identity Association for Non-Temporary Addresses Option IA-PD Identity Association for Prefix Delegation Option ICB Inter-Chassis Backup ICMP Internet Control Message Protocol IES Internet Enhanced Service IGP Interior Gateway Protocol iLER Ingress Label Edge Router IMPM Ingress Multicast Path Management IPoE IP over Ethernet ITU-T International Telecommunications Union - Telecommunications I-VPLS A field of the backbone service instance tag that identifies the backbone service instance of a frame LDP FRR Label Distribution Protocol Fast Re-Route LDPoRSVP LDP over RSVP LSA Link State Advertisement LSP Label Switched Path LUDB Local User Data Base MBB Make-Before-Break MBS Maximum Burst Size MC-APS Multi-chassis Automatic Protection Switching MC-EP Multi-Chassis Endpoint MC-LAG Multi-Chassis Link Aggregation MEP Maintenance End Point MMRP Multiple MAC Registration Protocol MP-BGP Multi-Protocol BGP MSAP Managed Service Access Point MTSO Mobile Telephony Switching Office MTU Multi-Tenant Unit NAT Network Address Translation NH Next-Hop NTP Network Time Protocol OAM Operation, Administration and Management OIL Outgoing Interface List OPS On-Path Support P2MP Point-to-Multipoint PAP Password authentication protocol PBB Provider Backbone Bridging PBB-Epipe A combination of the best of the PBB and Epipe PBB-VPLS A combination of the best of the PBB and VPLS PBT Port Based Timestamping PDV Packet Delay Variation PE Edge router managed and operated by the “Customer Carrier” that connects to CEs to provide business VPN or Internet services. PIR Peak Information Rate PLR Point of Local Repair POP Points of Presence PPPoE Point-to-Point Protocol over Ethernet PPS Packets per second PTP Precision Time Protocol QoS Quality of Service RADIUS Remote Authentication Dial In User Service Routed CO Routed Central Office RPF Reverse Path Forwarding RR Route Reflector RTM Routing Table Manager SAP Service Access Point SASE Stand Alone Synchronization Equipment SDH Synchronous Digital Hierarchy SDP Service Distribution Point SHCV Subscriber Host Connectivity Verification SLA Service Level Agreement SONET Synchronous Optical Network Spoke-SDP Spoke Service Distribution Point SRLG Shared Risk Link Groups SSM Synchronization Status Messages TCN Topology Change Notification TE Traffic Engineering TED Traffic Engineering Database T-LDP Targeted LDP TPSDA Triple Play Service Delivery Architecture TTM Tunnel Table Manager VLL Virtual Leased Line VPLS Virtual Private LAN Service VPN-IPv6 Virtual Private Network address family for IPv6 addressing. VPRN Virtual Private Routed Network VSA Vendor Specific Attribute WRED Weighted Random Early Detection