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Introduction to Performance Routing (PfR)

Chapter Description

In this sample chapter from Cisco Intelligent WAN (IWAN), the authors cover Performance Routing (PfR), Introduction to the IWAN domain, and Intelligent path control principles

Bandwidth cost, WAN latency, and lack of bandwidth availability all contribute to the complexities of running an efficient and cost-effective network that meets the unique, application-heavy workloads of today’s enterprise organizations. But as the volume of content and applications traveling across the network grows exponentially, organizations must optimize their WAN investments.

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Cisco Intelligent WAN (IWAN)

Cisco Intelligent WAN (IWAN)

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Summary

This chapter provided a thorough overview of Cisco intelligent path control, which is a core pillar of the Cisco IWAN architecture and is based upon Performance Routing (PfR). The following chapters will expand upon these theories while explaining the configuration of PfR.

PfR provides the following benefits for a WAN architecture:

  • Maximizes WAN bandwidth utilization

  • Protects applications from performance degradation

  • Uses passive monitoring to track application performance across the WAN

  • Enables the Internet as a viable WAN transport

  • Provides multisite coordination to simplify network-wide provisioning

  • Provides an application-based policy-driven framework that is tightly integrated with existing Performance Monitor components

  • Provides a smart and scalable multisite solution to enforce application SLAs while optimizing network resource utilization

PfRv3 is the third-generation multisite-aware bandwidth and path control/optimization solution for WAN- and cloud-based applications and is available now on Cisco Integrated Services Router (ISR) Generation 2 series, ISR-4000 Series, and CSR 1000V and ASR 1000 Series routers.

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