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Broadband Subscriber Management Solutions Terms and Acronyms

• AAA (authentication, authorization, and accounting)—An IP-based networking system that controls user access to computer resources and manages the activity of users over a network.
• ASM (Any Source Multicast)—A method of allowing a multicast receiver to listen to all traffic sent to a multicast group, regardless of its source.
• BSR (broadband services router)—A router used for subscriber management and edge routing.
• CoA (change of authorization)—RADIUS messages that contain information for dynamically changing session authorizations.
• CoS (class of service)—A method of managing network traffic by grouping similar types of traffic together and treating each traffic type as a “class” with a defined service priority.
• DHCP (Dynamic Host Configuration Protocol )—A mechanism through which hosts using TCP/IP can obtain protocol configuration parameters automatically from a DHCP server on the network; allocates IP addresses dynamically so that they can be reused when no longer needed.
• IGMP (Internet Group Membership Protocol)—A host-to-router signaling protocol for IPv4 used to support IP multicasting.
• IS-IS (Intermediate System-to-Intermediate System)—A link-state interior gateway routing protocol (IGRP) for IP networks that uses the shortest-path-first (SPF) algorithm to determine routes.
• LSP (label-switched path)—The path traversed by a packet that is routed by MPLS. Some LSPs act as tunnels. LSPs are unidirectional, carrying traffic only in the downstream direction from an ingress node to an egress node.
• MPLS (Multiprotocol Label Switching)—A mechanism for engineering network traffic patterns that functions by assigning to network packets short labels that describe how to forward the packets through the network.
• MSAN (multiservice access node)—A group of commonly used aggregation devices including digital subscriber line access multiplexers (DSLAMs) used in xDSL networks, optical line termination (OLT) for PON/FTTx networks, and Ethernet switches for Active Ethernet connections.
• Multiplay—A networking paradigm that enables the ability to add new and robust networking services that individual subscribers can access.
• OIF (outgoing interface)—An interface used by multicast functions within a router to determine which egress ports to use for fowarding multicast groups.
• OSPF (Open Shortest Path First)—A link-state interior gateway protocol (IGP) that makes routing decisions based on the shortest-path-first (SPF) algorithm (also referred to as the Dijkstra algorithm).
• PIM (Protocol Independent Multicast)—A multicast routing protocol used for delivering multicast messages in a routed environment.
• PPP (Point-to-Point Protocol)—A link-layer protocol that provides multiprotocol encapsulation. PPP is used for link-layer and network-layer configuration. Provides a standard method for transporting multiprotocol datagrams over point-to-point links.
• PPPoE (Point-to-Point Protocol over Ethernet)—A network protocol that encapsulates PPP frames in Ethernet frames and connects multiple hosts over a simple bridging access device to a remote access concentrator.
• RADIUS (Remote Authentication Dial-In User Service)—A networking protocol that provides centralized access, authorization, and accounting management for subscribers to connect and use a network service.
• Residential gateway—A firewall, Network Address Translation (NAT) router, or other routing device used as a customer premises equipment (CPE) terminator in the home, office, or local point of presence (POP).
• SSM (single-source multicast)—A routing method that allows a multicast receiver to detect only a specifically identified sender within a multicast group.
• set-top box—The end host or device used to receive IPTV video streams.
• Triple play—A networking paradigm that dedicates bandwidth to data, voice, and video service.
• VOD (video on demand)—A unicast streaming video offering by service providers that enables the reception of an isolated video session per user with rewind, pause, and similar VCR-like capabilities.
• VSR (video services router)—A router used in a video services network to route video streams between an access network and a metro or core network. The video services router is any M Series Multiservice Edge Router or MX Series router that supports the video routing package provided with Junos OS Release 8.3 or later.