Juniper Service Level Agreements

IP Services - Service Level Agreements

ATM, Frame Relay, and leased line service revenue is critical to the business success of network service providers. These legacy services are often delivered with Service Level Agreements (SLAs). SLAs specify the reliability and performance of a data service and are staples in the Frame Relay and ATM worlds. As Layer 2 services, particularly VPN services, migrate to IP, service providers need to offer aggressive IP-based SLAs to win lucrative IP VPN business. The Juniper Networks E-series edge routing platform delivers a significant capability for service providers to reliably deliver and measure service levels at the IP layer.

Subscribers needs are simple. They want reliable service and an accurate assessment of the contracted service. Although the demands are easy, meeting them has been a challenge in the IP world. First- generation IP solutions forced the service provider to choose between data throughput and data measurement, making IP SLAs impossible to deliver. The E-series next-generation edge routers have IP SLA capabilities built in. With its ASIC-based speed, the E-series is able to maintain wire-rate data throughput, while collecting the critical information needed to ascertain service level compliance. And with its strong reliability options, the E-series can deliver optimal uptime, where service providers need it most…the edge of the network.

Benefits

The power of the E-series edge router enables service providers to, for the first time, offer IP SLAs that truly meet subscriber needs, with:

• Support for corporate-based subscribers who want to outsource VPN networks, but still need control and measurement guarantee
• Support for wholesale partners who buy large-scale bandwidth and services
• The ability to overcome the performance/measurement trade-offs of the past and get accurate statistics and wire-speed data throughput
• Operationally-savvy statistics that do not overwhelm management networks and tools
• Superb, flexible reports that can be customized and displayed on a per-subscriber basis
• Redundancy options that deliver superior uptime and can be packaged to subscribers with mission-critical concerns
• Differentiated traffic handling options that can guarantee quality performance to high paying subscribers, even in times of congestion

Technology Overview

The edge of the service provider network is where all IP services are delivered. Two major drivers define most network topologies and are critical to IP SLA delivery:

1. Subscribers typically have one entry point into the network. This entry point must be extremely reliable and redundant in order to meet SLA uptime guarantees.
2. Service providers tend to architect oversubscription at the edge of the network, making it extremely important to prioritize traffic treatment in times of congestion, as well as account for the delivered service.

The E-series is able to deliver a highly reliable, wire-speed edge router that allows service providers to meet these distinct goals.

Maximizing Service Uptime

The E-series offers service providers a highly redundant, carrier-class platform suitable even for "lights-out" facilities. With redundant logic and power, hot swap, and a cost-effective and innovative subscriber-facing redundancy feature, the E-series is designed to deliver consistent, high uptime to IP customers.

Real-world Statistics

The E-series has the power to collect fine grained statistical information down to the byte, packet, interface, and subscriber level, allowing service providers to develop both detailed and summary reports. The E-series uses a highly efficient bulk transfer facility in order to upload the statistics, so that service providers do not overload busy, mission-critical management networks with statistics polling. With the ASIC-based power of the E-series, subscriber data throughput is maintained at wire-speed, even while fine-grained collection is enabled.

Customized, Graphical Reporting

Juniper Networks Performance Manager is an integrated service-level management (SLM) suite of software tools developed for the high-performance needs of today's service providers. Performance Manager's software allows service providers to collect and manage network data from multiple devices, including the E-series. Web-based tailored reports are generated by the Performance Management Reporter, and service-ready content such as pre-defined reports and formulas are generated by the Performance Management Library.

The Performance Management Library Manager is a suite of performance management packs that equips service providers with a powerful tool to deliver differentiated services. This is done by morphing network data into network intelligence for differentiated service offerings such as ATM, Frame Relay, LAN, and WAN. Performance Management Library includes pre-compiled device MIBs, technical indicators, pre-defined performance metrics, SLA metrics and formulas, embedded pre-defined reports, and more.

The Performance Management Reporter allows easy customization of reports, providing access to service-level information to not only service provider operators, but also providing on-demand, Web-based, service reports to end users.

Juniper Networks Performance Manager is powered by Proviso (a Quallaby Corporation product).

Automated Failover via Routing Protocols

Service providers have long used routing protocols to handle redundancy issues at the core of the network. Now, service providers can also use these protocols at the edge. The E-series offers full support for BGP, OSPF, IS-IS, and RIP, allowing service providers to configure redundant paths and automatically route around network problems. In addition, service providers can market technologies such as dual homing and load balancing to their subscribers to create redundant, and therefore reliable, uplinks into the network.

In addition, the MPLS at the edge capability of the E-series allows service providers to create highly redundant and prioritized recovery, supporting prioritized path restoration, and assignment of traffic into priority paths.

Service Levels with IP QoS

The strong QoS features in the E-series allow service providers to offer differentiated services to their subscriber bases. The E-series combines fine-grained classification abilities with flexible, highly scalable queuing, and support for both DiffServ and MPLS-based service transport models, designed to ensure that service providers can reliably deliver (and measure) the differentiated services they wish to deliver.

Features

The emergence of the IP SLA will strain unprepared networks, allowing those service providers that plan up front to support wire-rate statistics collection and processing to profit in the subscriber migration to IP VPNs. The E-series is a carrier-class edge router that is designed to deliver all the necessary tools to enable IP SLAs, both in terms of reliable service delivery and comprehensive statistics collection: wire-rate performance, fine-grained statistics measurements, bulk statistics collection, high reliability and strong redundancy features, including the only 1:n subscriber line sparing available, and strong QoS setting to enable differentiated traffic treatment. In addition, the entire feature set of the E-series gives service providers the IP service flexibility, performance, and profitability that they need:

• A single edge platform can deliver consistent IP services to leased line, xDSL, fixed wireless, and cable subscribers. SLAs can be offered over any access media type
• The ASIC-based power of the E-series enables all statistics collection to be delivered at wire speed, with no impact on traffic throughput
• The unsurpassed density of the E-series can support up to 4000 T1s in a single chassis, and up to 12,000 in a single rack, optimizing POP space and power, and allowing service providers to hit cost-competitive pricing targets
• 100% redundancy features such as subscriber-facing interface redundancy deliver a competitive SLA advantage

Technical Specifications

Software Specifications

• MPLS - RSVP, LDP, CR-LDP, VPN support with BGP extensions (RFC2547)
• DiffServ-TOS classification and marking
• BGP4, IS-IS, OSPF, RIP
• 1:n line card redundancy
• Hot swap on all line modules
• Passive midplane architecture
• Redundant, distributed power
• Redundant SRPs

Datasheets:

• Juniper networks E-series broadband services routers
• Juniper networks E320 and E120 broadband services routers
• Juniper networks JUNOSe

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