《Subscriber_Redundancy_tig》.pdf

T E C H N O L O G Y I N F O R M A T I O N G U I D E Subscriber Redundancy for Routed-Central Office D e L i v e R i N g N e T W O R k S e R v i C e R e D u N D A N C y T O T h e S u b S C R i b e R u S i N g A N e N h A N C e D S u b S C R i b e R m A N A g e m e N T R O u T e D - C O e N v i R O N m e N T Abstract Alcatel-Lucent’s Triple Play Service Delivery Architecture (TPSDA) delivers voice, video and data services to residential customers. This technical information guide focuses on one part of the TPSDA, the delivery of redundant network services in an enhanced subscriber management (ESM) routed-co environment. This environment applies to the delivery of high-speed Internet (HSI), voice-over-IP (VoIP) and video-on-demand (VoD). The goal of subscriber redundancy in an ESM routed-co environment is to minimize outages due to failure. This technical information guide provides an overview of the features required for network redundancy to function; it discusses the details of the configuration, and the operational aspects involved. Table of Contents 1 1. Introduction 1 2. Overview 2 3. Subscriber Router Redundancy Protocol 3 3.1 Redundant default gateway 4 3.2 Monitoring the in-band communications path 5 3.3 Synchronizing the SRRP peer states 5 4. Multi-chassis synchronization 5 4.1 Subscriber management synchronization 7 4.2 Subscriber router redundancy protocol synchronization 8 5. Redundant interface 9 6. C