Juniper Networks E120 Benutzerhandbuch

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Product Description 
Our BSR portfolio consists of the Juniper Networks
®
 E320 and E120 Broadband 
Services Routers. Introduced in 2005, the award-winning E320 BSR provides the 
high system capacity as well as the high subscriber and interface density required 
for large broadband deployments. The E120 BSR, introduced in 2007, provides the 
same comprehensive feature set as the E320 in a platform designed for smaller 
configurations. Both platforms uniquely combine advanced hardware and software 
that support service provider efforts to reduce operations costs and drive new revenue 
opportunities via advanced services that include bundled voice and Internet access, 
virtual private networks (VPNs), IPTV, gaming, and streaming music applications. 
The E320 and E120 share a common system architecture that distributes packet 
processing and quality of service (QoS) policy enforcement functions to ASIC-based line 
modules. This design provides a fast path for IP traffic streams by removing the route 
processor from the forwarding path, and ensures performance at scale by incrementally 
adding processing power as new subscribers and services are provisioned. 
The E320 and E120 also share a modular, carrier-class design with optional redundancy 
on all major hardware subsystems and common equipment—including switch fabric, 
route processing, and packet processing redundancy—as well as interface card and 
interface-level protection schemes. Furthermore, both platforms are powered by the 
Juniper Networks JUNOSe
 software. The modular, object-oriented, and component-
based architecture of the production-hardened JUNOSe increases overall system 
reliability, simplifies upgrades, and accelerates new feature development. 
Together with JUNOSe, the E320 and E120 incorporate the vast experience Juniper 
has gained over many years of supporting service providers worldwide, and provide 
a comprehensive solution for the profitable deployment of services to residential and 
business customers alike.
Architecture and Key Components
The E320 BSR is a high-performance routing platform optimized for large point of 
presence (POP) environments and multiplay service delivery. Service providers can 
optionally equip their E320 with either a 100 Gbps or a 320 Gbps switch fabric. 
The E120 BSR, with its 120 Gbps switch fabric, is a high-performance routing platform 
optimized for smaller POPs and central offices and multiplay service delivery. 
Product Overview
Broadband operators face many 
challenges as they offer increasingly 
complex bundles of multiplay 
services. The Juniper Networks 
Broadband Services Router (BSR) 
portfolio provides the advanced 
subscriber management, high-
performance routing, efficient 
Ethernet aggregation, and superior 
quality of service that address 
diverse broadband network edge 
requirements with unprecedented 
capacity, reliability and performance.
E320 and E120 
BrOadBand 
SErvicES rOutEr 
POrtfOliO