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Cisco WAAS Architecture, Hardware, and Sizing

Sample Chapter is provided courtesy of Cisco Press.
Date: Feb 1, 2010.

Chapter Information

Chapter Description

This chapter provides an introduction to the Cisco WAAS hardware family, along with an in-depth examination of the hardware and software architecture. It also looks at the licensing options for Cisco WAAS, positioning for each of the hardware platforms, and performance and scalability metrics for each of the platforms.

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Licensing

Each Cisco WAAS device, whether it is an appliance (WAE or WAVE) or a router-integrated network module, must be configured with one or more licenses. This license dictates what features are permitted to be configured on the device. Licenses are not enforced in WAAS; however, licenses can only be applied to platforms that support the particular license in question. Four licenses exist for Cisco WAAS and configuration of licenses are discussed in Chapter 7:

Transport license: Enables a WAAS device to apply only basic WAN optimization capabilities. It supports use of TFO, DRE, and PLZ. WAAS devices configured with the Transport license cannot provide Enterprise license features including application-acceleration capabilities, disk encryption, or any other features provided by other licenses. WAAS devices configured with the Transport license can, however, register with and be managed and monitored by a WAAS device configured as a Central Manager. The Transport license is supported by all Cisco WAAS hardware platforms.
Enterprise license: Allows a WAAS device to apply all the WAN optimization provided by the Transport license and all the application acceleration functionality with the exception of Video (which is licensed separately). Additionally, the Enterprise license enables support for disk encryption and NetQoS integration. Like the Transport license, WAAS devices configured with the Enterprise license can register with and be managed and monitored by a WAAS device configured as a Central Manager. Configuration of a WAAS device as a Central Manager requires the Enterprise license. The Enterprise license is supported by all Cisco WAAS hardware platforms with the exception of the network module model 302 (NME-302).
Video: Allows a WAAS device to apply stream splitting to Windows Media over Real-Time Streaming Protocol (RTSP) traffic. The Video license is commonly applied in conjunction with the Enterprise license. The Video license is supported by all Cisco WAAS hardware platforms with the exception of the network module model 302 (NME-302).
Virtual-Blade: Allows a WAAS device to host third-party operating systems and applications in one or more VBs in the branch office, including Microsoft Windows Server. The Virtual-Blade license is supported on all Cisco WAVE appliances in addition to the WAE model 674.

4. Performance and Scalability Metrics | Next Section Previous Section

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