waasapnotes.pdf - DICOM Traffic Performance and WAAS Application Deployment Guide This document describes how the Digital Imaging and Communications in

waasapnotes.pdf - DICOM Traffic Performance and WAAS...

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Corporate Headquarters: Copyright © 2008 Cisco Systems, Inc. All rights reserved. Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA DICOM Traffic Performance and WAAS Application Deployment Guide This document describes how the Digital Imaging and Communications in Medicine (DICOM) protocol behaves over a wide area network (WAN) within the Cisco Wide Area Application Services (WAAS) environment. The relative performance improvements with WAAS are detailed, along with the component roles and configurations used in the lab environment. This document is intended for use by system engineers, account managers, and healthcare IT managers who are interested in understanding how the Cisco WAAS can improve DICOM traffic performance over a WAN link. Contents Solution Overview 2 Overview 2 DICOM Overview 3 Solution Architecture 6 Architecture and Topology 6 Modality Branch Office 7 WAN 7 Data Center Core 8 Aggregation and Access 8 PACS Server 8 WAN Optimization 9 TCP Flow Optimization 9 Data Suppression 9 Compression 9 Object Caching 9 Data Flow Example 10
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2 DICOM Traffic Performance and WAAS Application Deployment Guide OL-16162-01 Solution Overview Testing Results 11 Testing Methodology 11 K-PAC Application 11 Test 1: WAAS OFF 12 Test Results 12 Summary 13 Test 2: With WAAS On, No Caching 14 Test Results 14 Summary 14 Test 3: WAAS ON, Object Caching On 15 Test Results 15 Summary 16 Conclusions 17 Summary 17 Appendix A: Configurations 17 ISR 17 Branch WAE 20 Appendix B: DICOM Header information 23 Appendix C: Typical Volumes of DICOM Traffic 24 Anticipated Volumes of DICOM traffic 24 Solution Overview Overview Cisco WAAS is an application acceleration and WAN optimization solution that optimizes the performance of any TCP-based application operating over a WAN environment. Cisco WAAS uses a combination of TCP optimization techniques and application acceleration features to overcome the most common challenges associated with transporting traffic over a WAN. The DICOM standard is used in healthcare organizations for the exchange of images (CT, MRI, cat scan, etc).Cisco WAAS can transport DICOM type traffic and allow healthcare organizations to accomplish the following objectives: Reduce the amount of bandwidth required to deliver highly dense DICOM images over WANs. Increase the amount of traffic throughput experienced by the branch modalities for when storing or receiving DICOM images. Allow for consolidation of backend Picture Archival Communications Systems (PACS) used for the DICOM image storage into centralized data centers.
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3 DICOM Traffic Performance and WAAS Application Deployment Guide OL-16162-01 Solution Overview The Cisco Applications Network Services (ANS) solution is the overriding solution that encompasses the results of DICOM/WAAS traffic. It is recommended that the reader also refer to the ANS deployment guides for more details on Cisco WAAS and enterprise network architecture design.
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  • IP address, Transmission Control Protocol, Data center, Wide area network, Digital Imaging and Communications in Medicine

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