Please refer to WAAS sizing guidelines to size specific to customer requirements. * NME Hardware Assist for Enterprise Class Virtual. Blades . TCP Proxy architecture provides LAN-like TCP behavior and provides higher levels of. Cisco WAN Optimization is an architectural solution comprising a set of tools and techniques that work together in a Table 1 – Cisco WAAS Central Manager sizing options. Device .. of the chosen hardware form-factor. All connections are . Independent Computing Architecture (ICA) Acceleration Charts Disks- 5 (RAID-5) is implemented in WAAS as a hardware feature. RAID-5 devices can . Complete the sizing phase that includes the following tasks.
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The Cisco Linux platform is hardened to ensure that rogue services are not installed and secured such that third-party software or other changes cannot be made. The Cisco WAE model WAE is a dual sizinb rack-mount system wizing processors that is designed for deployment in the largest of enterprise data centers and under the most demanding conditions.
NOTE The WAE model is end-of-life and is ciscco covered in this section; however, its performance and scalability metrics are covered in this chapter to support those who have already deployed these devices in their networks and wish to continue using them with WAAS v4. The network interception and bypass manager is used by the Cisco WAAS device to establish relationships with intercepting devices where necessary and ensure low-latency bypass of traffic that the WAAS device is not intended to handle.
The WAE model is end-of-life and is not covered in this section; however, its performance and scalability metrics are covered in this chapter to support those who have already deployed these devices in their networks and wish to continue using them with WAAS v4. The configured policy dictates which optimization and acceleration components are enacted upon the flow and how the packets within the flow are handled.
This chapter provides an introduction to the Cisco WAAS hardware family, along with an in-depth examination of the hardware and software architecture. The Cisco WAAS product family consists of a series of appliances and router-integrated network modules that are based on an Intel x86 hardware architecture.
Licensing Next Section Previous Section. The Cisco WAVE model WAVE is a single-processor desktop model that is designed for deployment in small- and medium-sized branch office locations or small data center locations. By architceture the recommended guidelines for performance and scalability, a robust Cisco WAAS design can be realized, thereby allowing administrators to deploy the solution confidently to improve application performance over the WAN while enabling centralization and consolidation of costly infrastructure.
Should a WAAS device be physically compromised or a disk stolen, power is removed from the device, which destroys the copy of the key in memory memory is not persistent.
Summary > Cisco WAAS Architecture, Hardware, and Sizing
Each WAAS device includes two integrated Gigabit Ethernet interfaces including the network modules, one interface is internal and shares connectivity to a peer interface in the router through the router backplane, the other is external and can be cabled to a LAN switch, similar to an appliance.
Each Cisco WAAS device, regardless of form factor, is configured with some amount of hard disk storage and a compact flash card.
It also looks at the licensing options for Cisco WAAS, positioning for each of arcnitecture hardware platforms, and performance and scalability metrics for each of the platforms. The ISR is an ideal platform for the branch office in that it provides a converged service platform for the remote office, including routing, switching, wireless, voice, security, and WAN optimization in a single chassis platform, software version, and slot capacity dependent.
Hardware Family The current Cisco WAAS hardware family consists of three router-integrated network modules, two desktop appliance models, and four rack-mounted appliance models. About Affiliates Cisco Systems, Inc. WAE appliance models andalong with WAVE appliance models, andare targeted toward branch office deployments, whereas the WAE appliance models, are targeted toward regional office and sizjng center deployments.
Licenses are not enforced in WAAS; however, licenses can only be applied to platforms that support the particular license in question. This is defined in a single policy, thereby simplifying overall system policy management.
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. The WAE is a hybrid device that is commonly used for larger branch offices and those where virtualization is requiredbut works equally well as a data center device where virtualization is not used.
WAVE appliance models and do not have externally accessible hard disk architecthre, and with a single hard disk drive, do not support RAID. See All Related Articles. Transaction logs are not covered in this book, but a full reference on their usage can be found in the Cisco WAAS documentation.
Licensing > Cisco WAAS Architecture, Hardware, and Sizing
See All Related Articles. Cisco WAAS is a software component that is resident hwrdware a hardware device deployed at each location with users and servers.
The ATP is responsible for examining details of each incoming flow after being handled by the interception and bypass mechanisms in an attempt to identify the application or protocol associated with the flow. Another logical interface is the PortChannel interface, which can be used to team WAAS device interfaces together for the purposes of high availability and load balancing. Any appliance model can be used as a core data center or edge branch office device, although performance and scalability recommendations presented in this chapter must be followed.
The ATP also notes the application group to which the classifier belongs to route statistics gathered to the appropriate application group for proper charting visualization and reporting. The compact flash card is used for boot-time operation and configuration files, whereas the hard disk storage is used for optimization data including cisfo cache and Data Redundancy Elimination [DRE]swap space, software image storage repository, and guest operating system storage in the case of WAVE devices.
This module is not capable of running the advanced arrchitecture enabled by the Enterprise license discussed later in the chapterincluding application layer acceleration or disk encryption. This association is done by comparing the packet headers from each flow against a set of predefined, administratively configured, or dynamic classifiers, each with its own set of one or more match conditions.
This breadth of portfolio provides customers with the flexibility necessary to allocate the right platform for each network location where WAN optimization, application acceleration, and virtualization capabilities are needed. By making a comparison against the ATP using the SYN packet of the connection being established, the ATP does not need to be consulted for traffic flowing in the reverse direction, as the context of the flow is established by all WAAS devices in the path between the two endpoints and applied to all future packets associated with that particular flow.
It also looks at the licensing options for Cisco WAAS, positioning for each of the architecthre platforms, and performance and scalability metrics for each of the platforms.
The Cisco WAE model WAE is a single-processor rack-mount system that is designed for deployment in small- and medium-sized branch office locations or small ciaco center locations. Sample Chapter is provided courtesy of Cisco Press.
Cisco WAAS Architecture, Hardware, and Sizing
The Cisco WAVE model WAVE is a single-processor desktop model that is designed for deployment eizing small and medium-sized branch office locations or small data center locations. Figure shows how the ATP engine interacts with a flow and a particular policy. About Affiliates Cisco Systems, Inc.
Additionally, the increased memory configuration provides support for a greater amount of WAN bandwidth and optimized TCP connections.
Router-Integrated Network Modules The Cisco WAAS router-integrated network modules are designed to provide optimization services for the remote branch office or enterprise edge. This should not imply that the waaas characterization presented is fixed; devices should be placed in locations according to performance and scalability sizing and feature requirements.
This chapter 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. This can be coupled with a configuration that applies a specific DSCP marking to the packets within the flow. As flows are intercepted by the WAAS device and determined to be cisck for optimization, those flows are handed to the Application Traffic Policy ATP engine to identify what level of optimization anv acceleration should be applied based on the configured policies and classifier matches.
Cisco Linux provides an interface for the Cisco WAAS software to use for purposes of monitoring and generating alarms. About Affiliates Cisco Systems, Inc. Summary The Cisco Wide-Area Application Engine family includes three network modules for the Integrated Services Router and six appliance models spanning two desktop models and four rack-mount appliance models. Having a compact flash card enables the device to remain accessible on the network should the device suffer hard drive subsystem failure for troubleshooting and diagnostics purposes in such a scenario, optimization and virtualization services would not be operational.