Galaxy Citrix - Galaxy Broadband Communications Inc.

application delivery experience over satellite connections. ... user experience and performance metrics from EdgeSight for Load Testing from both types of ...
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Enterprise Networks that Deliver

Deployment Best Practices for Citrix XenApp® over Galaxy Managed Network Services

Developed by Hughes Network Systems

Enterprise Networks that Deliver

Galaxy Broadband Communications Inc. 1.877.463.9728 galaxybroadband.ca [email protected]

Table of Contents Executive Summary ........................................................................................... 1 Best Practices & Recommendations ................................................................ 2 Appendix A – Lab Environment – Detailed Diagram ....................................... 6 Appendix B – Citrix WAN Policy Configuration Instructions ......................... 7 Appendix C – SpeedScreen Configuration Instructions ............................... 11 Appendix D – Sample DEFAULT.ICA FILE with SpeedScreen Settings ...... 16

Galaxy Contact Information: NOC Support 1-877-863-8439 [email protected]

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Executive Summary Broadband networks offer high-bandwidth but can often exhibit high-latency and/or higher jitter with certain wireless technologies. The unique nature of high-latency networks causes poor performance amongst latency-sensitive applications. Citrix XenApp, when used with Galaxy Managed Network Services, can provide an effective application delivery experience over satellite connections. Utilizing Citrix policies to regulate and optimize XenApp features in conjunction with proper implementation of SpeedScreen Latency Reduction provides a desirable end-user experience for satellite network subscribers. This article will provide an overview on how to optimize Citrix XenApp to effectively deliver applications to broadband satellite users.

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Best Practices & Recommendations General High-Latency Network Considerations In a low-latency, high-bandwidth environment, administrators rarely have to take latency into account. Administrators utilizing satellite (and in some circumstances other wireless) based Galaxy Managed Services for IT service delivery can improve end user experience by reducing client-to-server round trip times, caching data, batching records and packets, and leveraging compression and acceleration technology. Here are some general best practices on how to optimize network communications over highlatency networks: Limit the number of client to server round trips - Every round trip from a remote client, through the satellite network and back will typically take between 600 – 800 milliseconds, and occasionally more. While the approximate one second round trip seems almost trivial, a process that makes multiple round trips will become an issue. On a LAN this is not a concern. It is definitely a problem when multiple transactions must take place sequentially over a satellite or other high latency wide area network. Cache Infrequently Changing Data Locally - Cached data does not have to be fetched over the network, thus decreasing total network traffic and making the user experience better – increasing user productivity: clients will not have to wait on an operation to complete before performing another one. Batch Data Records Together - Multiple ‘records’ transfer, either upload or download, to/from a server over the network are almost always best batched together rather than sent individually. This may seem like antithetical advice to keep network payload small, but pushing on a record by record basis will entail a heavy price in communication overhead involving multiple server requests and round trips. The real saving is in reducing these round trips. Leverage Galaxy Performance Enhancing Protocol (PEP) and TurboPage - Galaxy’s comprehensive package of acceleration and compression technologies is embedded in every HN router. The result is dramatically improved throughput and response time through mitigation of satellite delay, meaning Hughes customers experience wire-line or better performance of broadband IP applications. Galaxy routers utilize Galaxy’s