Juniper E-Series

Juniper Networks E-series Broadband Service Routing Platform 

       -  Overview
       -  Modules
       -  Features
       -  Key Benefits


  • Carrier-class routing with wire-speed performance
  • Comprehensive subscriber management and IP service support
  • Sophisticated, dynamic QoS implementation optimized for multiplay service delivery to business and residential customers
  • Low operational costs and consistent services, with a single JUNOSe image across all platforms and policy-based control via seamless integration with the Session and Resource Control portfolio


The E-series portfolio of IP edge and broadband services routing platforms is a critical element in the control, delivery and accounting of services at the network edge. The E-series includes six different models that are designed to efficiently address the widest variety of service provider requirements. The specific models include the high-capacity E320 BSR and E120 BSR platforms; the mid-range ERX-1440 and ERX-1410 platforms; and the compact ERX-710, ERX-705 and ERX-310. All E-series platforms utilize a single version of the proven JUNOSe operating system, which ensures both feature and operational consistency.

Powered by the mature and broadly deployed JUNOSe, the E-series portfolio helps service providers migrate from basic "best effort" IP services to exciting new, high value multiplay services that bundle a broad set of IP voice, video and data applications. JUNOSe, with its carrier-grade architecture, underpins the reliable and efficient delivery of advanced services to both business and residential broadband customers. In addition, JUNOSe is fully integrated with Juniper's Session and Resource Control portfolio for automated service creation and policy-driven control of network resources.

With an unsurpassed combination of powerful hardware packet processing and software flexibility, the E-series portfolio and JUNOSe provides the performance, scale and "always on" availability required at the network edge. Deployed in hundreds of production networks worldwide, the E-Series portfolio is relied on by service providers for its predictable high performance and service flexibility. These routers cost-effectively address subscriber management, edge routing and service aggregation requirements at carrier scale.




ERX Line Modules

  • Channelized T3
  • Channelized OC-3/STM-1 and OC-12/STM-4
  • Fast Ethernet
  • Fast Ethernet/Gigabit Ethernet combination
  • Gigabit Ethernet
  • OC-3/STM-1 and OC-12/STM-4 ATM
  • OC-3/STM-1, OC-12/STM-4 and OC-48/STM-16 PoS
  • Service Modules
  • IPSec Service Module

E320 Line Modules

  • LM4
  • LM10-U
  • LM10-A
  • Services Module


Features and Benefits


Broad Portfolio
The E-series portfolio consists of six high performance, "application–optimized" platforms designed specifically to address the unique requirements of carrier–scale multiplay deployments. The E-series portfolio includes:

  • E320 BSR, the largest capacity platform in the E-series portfolio. The E320 BSR can be optionally configured with either 100 Gbps or 320 Gbps of system capacity and extends wire-speed 10 Gbps performance per slot to support large PoP and CO deployments as well as bandwidth-intensive multiplay services.
  • E120 BSR, a 120 Gbps routing platform that supports wire-speed 10 Gbps performance per slot and extends the advanced capabilities of the E320 BSR to medium-sized PoPs and COs that support bandwidth-intensive multiplay services.
  • ERX-1440, a 40 Gbps routing platform designed to support medium sized PoP and CO deployments and multiplay services.
  • ERX-1410, a 40 Gbps platform designed to support medium sized PoP and CO deployments and multiplay services.
  • ERX-710, a compact 10 Gbps platform designed for small environments where space is at a premium and redundancy is desired.
  • ERX-310, a very compact 10 Gbps platform designed for small, distributed environments where space conservation is the primary concern.
  • ERX-705, a compact 5 Gbps platform designed for small environments where space is at a premium and redundancy is desired.

Cross-platform Feature Consistency via JUNOSe
Juniper Networks' JUNOSe is a mature, field-proven and feature-rich operating system that powers all the platforms within the E-series portfolio. A single JUNOSe release supports the entire E-series portfolio, providing network-wide feature consistency and a common operational environment.

High-performance Architecture
The modular, carrier-class architecture of the E-series portfolio utilizes a multiprocessor architecture that distributes processing functions to Line Modules (LMs) in order to maintain high performance at scale. This distributed architecture supports the incremental addition of processing power as new subscribers and services are provisioned without compromising service quality or system reliability.

The E-series platforms maintain an entire routing table per port, which removes the route processor from the forwarding path and provides wire-speed-performance IP traffic streams, a process aided by Juniper-developed ASIC technology.

QoS policy enforcement is also distributed to the Line Modules, which examine, classify and queue packets at full wire speed. Because QoS handling is distributed, overall system performance and service quality are maintained under all network conditions.

Comprehensive Subscriber Management Features
The E-series supports a wide variety of operationally proven and efficient subscriber management features in order to effectively aggregate traffic from access multiplexers, terminate PPP sessions and enforce QoS policies on a per flow and per subscriber basis. Features include support for DHCP, PPPoE, PPPoA, PAP, and CHAP; domain parsing based on destination domain, IP address pooling, L2TP, LAC, LNS, RADIUS-initiated disconnect, RADIUS server support, auto-detection, Zero-Touch configuration and TACACS+.

High Availability
The E-series portfolio delivers carrier-class reliability with NEBS-compliant hardware design, hot-swappable modules, redundancy and modular software architecture. From a hardware perspective, optional hardware redundancy features exist for route processing, switch fabrics, line modules, interface cards and even individual interfaces. From a software perspective, JUNOSe is based on a high-performance, modular, object-oriented and component-based design that provides carrier-grade scalability, eases software upgrades and reduces new feature development time. Each major software subsystem within JUNOSe (e.g.: BGP-4, IP, SNMP, Frame Relay, SONET, etc.) operates independently, with its own set of dedicated resources for memory, buffers and processing cycles. This guarantees that the behavior of one program module does not adversely affect other program modules.

Advanced QoS: JUNOSe incorporates application-aware intelligence to respond to real-time changes in the application mix, to ensure the quality delivery of voice and video services even as subscribers concurrently consume multiple services over the same physical connection. Furthermore, the E-Series platforms support fine-grained IP QoS capabilities at line rate for all subscriber flows, ensuring that QoS policies are enforced and that high priority traffic–whether low-latency Voice over IP, mission-critical business applications, or loss-sensitive video services–receives the appropriate level of preferential treatment to ensure subscriber satisfaction.

Key Benefits

Capital Efficiency: Service providers can select the E-series platforms that best address their business and technical needs based on system capacity, subscriber density, redundancy options, cost and many other important criteria, without compromising on reliability or features.

Operational Efficiency: Consistent JUNOSe implementation across the entire E-Series portfolio ensures a common operations environment, which helps contain OpEx, speed new service creation and improve new service roll out. Broad capabilities, including zero-touch provisioning, subscriber management support for DHCP and PPP clients and extensive OAM&P features, further enhance the operational benefits.

Increased Service Revenue Opportunities: The sophisticated QoS capabilities of the E-series portfolio and the feature-rich JUNOSe operating system work together to deliver the widest range of high-value services to both business and residential customers with performance and reliability. With features that support throughput guarantees and preferred traffic treatment on a granular basis, the E-series portfolio helps service providers in their efforts to increase competitive differentiation and increase revenues.


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