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Sydney UC - February 2015

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Sydney's UC user group meets again in February 2015 to discuss Lync Wi-Fi, SDN and QoS along with latest UC industry announcements

Publié dans : Technologie

Sydney UC - February 2015

  1. 1. SYDNEY UC USER GROUP 11th February 2015
  2. 2. AGENDA Times Topics 6:00 PM (60 mins) Microsoft Lync and using QoS and SDN to improve the wireless network experience (Guest Speaker - Mark Verbloot) 7:00 PM (30 mins) Networking Break and Pizza 7:30 PM (20 mins) Latest UC News and Development (Justin Morris) 7:50 PM (10 mins) Wrap Up and Prize Draw
  3. 3. AGENDA Times Topics 6:00 PM (60 mins) Microsoft Lync and using QoS and SDN to improve the wireless network experience (Guest Speaker - Mark Verbloot) 7:00 PM (30 mins) Networking Break and Pizza 7:30 PM (20 mins) Latest UC News and Development (Justin Morris) 7:50 PM (10 mins) Wrap Up and Prize Draw
  4. 4. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Microsoft Lync QOS and SDN to improve Wireless Network Experience Mark Verbloot Director, Systems Engineering, Australia New Zealand
  5. 5.  Aruba Lync Solution Architecture  Lync Topology Design Considerations  Lync Deployment Considerations Voice Grade Wi-Fi QoS Scalability Agenda
  6. 6. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved End-to-End UCC Challenges • Diversity of client types • Diversity of operating systems • Mix of managed and unmanaged • Server health • Server capacity • Configuration inconsistencies • Network bottlenecks • QoS markings not being honored • Interference sources • Different RF environments • Channel conflicts • Variable numbers of clients
  7. 7. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved The Five Pillars of Lync Mobility  Ensure adequate Wi-Fi density  Optimize Wi-Fi to account for UCC  Ensure proper prioritization of UCC traffic  Pick the right UC integration architecture in place  Ensure the right instrumentation is in place to measure and troubleshoot end-to-end
  8. 8. Aruba Lync Solution Architecture
  9. 9. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Lync Network Components Lync Federated Partners Reverse Proxy Lync Edge Server Lync FE Server Pool/ Lync SDN API Dialog Listener Exchange Server QoE Server/ Monitoring Aruba Mobility Controller Lync SDN Manager Active Directory Internet
  10. 10. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved The Lync SDN API Opens A View Into Lync Calls
  11. 11. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Aruba Opens A View Into Network Status
  12. 12. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Together They Provide An End-To-End View
  13. 13. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Lync Call Flow with SDN API
  14. 14. WiFi Design Considerations for Lync
  15. 15. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved RF Design Best Practices for Voice • Capacity based Wi-Fi vs. coverage based across all areas of Lync usage • Pervasive RF coverage with AP-AP spacing ≈15 meters • Small cell sizes maximizes client data rates • Minimum -65 dBm RF signal (RSSI) , minimum 25 dB signal-to-noise ratio (SNR) • Higher number of APs operating with lower TX power ensures resiliency • Minimum and maximum AP power difference no greater than two steps • AP placement recommendations vary based on deployment type • Carpeted office space, high ceiling and long corridor space, retail stores. Conference centers, auditoriums
  16. 16. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved RF Design Best Practices for Voice
  17. 17. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Roaming Behavior • Many devices have unique characteristics • Proprietary roaming algorithm, scanning behavior, receive sensitivity • Bad driver design can prevent Wi-Fi clients from roaming to the best access point • Addressed by infrastructure deterministically mapping clients to the best AP – no change to client or client software required • Steering based on SNR and signal level information gathered from client's perspective • Steering decision made based on probe requests from the client • Combined with periodic load balancing it ensures seamless roaming
  18. 18. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Authentication/Encryption Guidelines • 802.1X authentication through a RADIUS server can introduce delays during re-association and roaming • Use Opportunistic Key Caching with 802.1X for faster roaming • EAP-TLS provides the best security and is preferred in enterprises than EAP-PEAP • PSK has lower delays and works well for voice devices but is not preferred due to weak security
  19. 19. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved RF Design Best Practices For Voice ENABLE • Use 20/40/80 MHz channels for appropriate radios; minimize interference • Set power level within 2 steps • 9, 15 • Higher rate beacons to reduce airtime consumption • Higher data rates to prevent low-speed chatter • Minimum RF signal power should be -65 dBm • Minimum SNR should be 25 • Local probe request threshold 18
  20. 20. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved ROAMING Optimize For Roaming • Enable OKC • OKC is only supported on Windows devices and few Android devices. • Enable validate pmkid • This configuration is very useful if you have devices that do not support OKC, i.e., Apple OSX or iOS devices • Enable EAPOL rate optimization • Aps should send EAPOL frames out in lowest possible rates to avoid delays • Use 802.11r for fast BSS transitions • Mostly for iOS devices
  21. 21. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved QOS Segments in a network
  22. 22. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved WMM and QOS
  23. 23. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Incoming traffic is unmarked, and controller is not configured for any classification
  24. 24. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Incoming traffic is unmarked, and controller is configured for classification
  25. 25. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Re-marking Traffic
  26. 26. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved DSCP EF 46 and WMM
  27. 27. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved DSCP EF 46 Work around Aruba Mobility Controller AP Client-A, VO: DSCP 56 Client-B, VO: DSCP 56 DSCP 56 WMM VO DSCP 46 WMM VO DSCP 46 DSCP 46 Controller decrypts the packet and retags as per traffic type AP looks at L2 priority and puts DSCP as per DSCP to WMM mapping VO: 46 VI: 34 BE: 24
  28. 28. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Heuristics Based Lync Classification ACL is defined on Wi-Fi network to listen on port TCP 5061 Classify media is enabled and ACL is mapped to a user role Lync voice/video calls hit the Lync ACL and Lync clients are marked as Media-capable Subsequent UDP data flow with source/destination port >1023 from/to Media capable clients goes through Deep Packet Inspection (DPI) engine DPI identifies an RTP session then the payload type in RTP header is assessed to determine if it’s a voice/video session Type of Service (TOS) is set in the session equal to the egress Wi-Fi tunnel DSCP mapping configured in SSID profile Backbone Network
  29. 29. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Lync SDN API Wi-Fi controller, Lync server configured for SDN API User makes Lync peer-to-peer call through server, Lync server sends call type to controller Controller prioritizes Lync traffic types and applies correct DSCP tag • DSCP tag for video applies to desktop sharing • DSCP Tag for file transfer is best effort Lync server sends controller a call transition update from voice to video At end of the call, Lync Server sends controller QoE metrics Backbone Network Call type update Call transition update Call QoE update
  30. 30. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved UCC Data Collection 1. Call Data Recorded at START of the call 2. Call Data Recorded at PERIODIC INTERVALS 3. Call Data Recorded when call has ENDED
  31. 31. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved UCC Data Collection (Both heuristics and SDN API) Call Data Recorded at START of the call 1. Call start 2. Call start time 3. MAC and IP of caller, callee 4. Modified DSCP, WMM-AC 5. Sticky, Steerable or un-steerable client 6. BW for a session 7. Service application – Lync audio, Lync video etc. 8. Call ID 9. Unique call ID (per-controller metric)
  32. 32. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved UCC Data Collection Call Data Recorded at PERIODIC Intervals 1. UCC call quality score 2. Jitter, packet loss, delay 3. Client health 4. RF data – channel, SNR, RSSI, utilization, tx, rx rate, retries, drops, interference, assoc radio, AP-mac, L2 and L3 hand-off info 5. Original DSCP and WMM-AC
  33. 33. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved UCC Data Collection 1. Call Data Recorded at END of each call 1. Call end time 2. MOS
  34. 34. Lync Topology Design Considerations
  35. 35. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Types of Lync Deployments 1. Lync on-prem 2. Hosted Lync 3. Lync Online (Office 365)  Lync SDN is preferred for Lync On-prem and Hosted Lync deployments  Lync Online is supported only in Heuristics mode
  36. 36. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved SDN Data Flow in Campus Environment LSM LDL LDL LDL Local 1 Local 2 Master Backup Master Site 1 Master - Local Master 1 Site 2 All Master Master 2 Lync FE1 Lync FE2 Lync FE3 SDN Data SDN XML
  37. 37. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Multi site Lync on-prem and Hosted Lync Architecture with SDN Lync FE Server Pool 1 Aruba Mobility Controllers Lync SDN Manager 1 Site1 - Americas Lync FE Server Pool 2 Aruba Mobility Controllers Lync SDN Manager 2 Internet Site2 - EMEA Lync FE Server Pool 3 Aruba Mobility Controllers Lync SDN Manager 3 Site3 - APJ Internet
  38. 38. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Multi site Architecture with Lync Online and on-prem/hosted Lync on-prem/hosted FE Pool 3 Site3 - APJ Internet Lync Online Servers On-prem user Lync Online user Lync SDN/ Heuristics Heuristics Lync on-prem/hosted FE Pool 2 Site2 - EMEA Internet Lync Online Servers On-prem user Lync Online user Lync SDN/ Heuristics Heuristics Lync on-prem/hosted FE Pool 1 Site1 - Americas Internet Lync Online Servers On-prem user Lync Online user Lync SDN/ Heuristics Heuristics
  39. 39. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Capabilities: SDN API vs. Heuristics Feature Heuristics SDN API Tagging and retagging WMM/DSCP values   Dynamic identification/prioritization of Lync voice/video streams   Prioritization of Office365 traffic  Scalable beyond 100 controllers  Independent of Lync infrastructure  Dynamic identification/prioritization of Lync desktop sharing, file transfer  Call metrics including MOS for diagnostics and troubleshooting  Visibility into dialed numbers and gateway endpoint  Real-time call quality analysis using UCC score  Correlation between UCC score and Wi-Fi health metrics  UCC dashboard for network-wide visibility and troubleshooting  Network-wide view across multiple controllers  Lync application usage overlay on a floor plan  Accurate identification of 100% of all Lync traffic 
  40. 40. Scalability Guidelines
  41. 41. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Call Scalability Per AP
  42. 42. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Scalability with Lync SDN API v2.0 It is recommended to have a dedicated LSM per Lync Front End Server pool
  43. 43. Visualisation and Troubleshooting
  44. 44. “What’s measured improves” – Peter F Drucker
  45. 45. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Visualization & Troubleshooting • Where is the problem? • Is the Wi-Fi network congested? • Are the wired network tags wrong? • Is it something else? Lync Call Problem Help Desk Request ?
  46. 46. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved RF Health Dashboard
  47. 47. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved UCC Call Quality Metric Computation Calculated by analyzing the RTCP/RTP information for related media flows over the wireless link Delay, jitter and packet loss is also calculated Applies for downstream traffic only; over the Computation performed for voice calls only
  48. 48. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Applications In-Flight
  49. 49. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Centralized UCC Dashboard Call quality trend Quality Correlation with RF Call Volume Trend Devices Trend
  50. 50. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved WiFi and Call Heath View Speeds troubleshooting UCC issues – Is it the WiFi, or something else
  51. 51. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved UCC Visibility on a Floorplan Clients with active calls Color coding around client indicates quality
  52. 52. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Mobility Trail on the Floor Plan Ability to replay clients mobility trail along with call quality
  53. 53. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Per-User Records User-Specific Trends Individual Call Records
  54. 54. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Bad Call Details CDR Performance Correlation
  55. 55. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved 30 second sample call quality and client health CDR Performance Correlation
  56. 56. Conclusion
  57. 57. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Voice Grade Wi-Fi - Capacity Based RF design - AP selection and placement recommendations - RF recommendations - Authentication and Encryption Guidelines - Roaming Guidelines Refer to Lync VRD for details about these recommendations.
  58. 58. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Conclusion • The foundation of Lync mobility is voice-grade Wi-Fi • Traffic optimization is needed to free bandwidth for latency- sensitive Lync voice/video traffic • Lync packet and retagging of mismarked packets is essential for QoS • Mobile BYOD must be factored in to minimize the performance impact of adding new devices • Lync diagnostics and troubleshooting keeps Run state networks humming
  59. 59. CONFIDENTIAL © Copyright 2014. Aruba Networks, Inc. All rights reserved Lync VRD Location Available on Aruba Community site – http://community.arubanetworks.com/t5/Validated-Reference-Design/Lync-Over- Aruba-WiFi/ta-p/199813
  60. 60. THANK YOU
  61. 61. AGENDA Times Topics 6:00 PM (60 mins) Microsoft Lync and using QoS and SDN to improve the wireless network experience (Guest Speaker - Mark Verbloot) 7:00 PM (30 mins) Networking Break and Pizza 7:30 PM (20 mins) Latest UC News and Development (Justin Morris) 7:50 PM (10 mins) Wrap Up and Prize Draw
  62. 62. AGENDA Times Topics 6:00 PM (60 mins) Microsoft Lync and using QoS and SDN to improve the wireless network experience (Guest Speaker - Mark Verbloot) 7:00 PM (30 mins) Networking Break and Pizza 7:30 PM (20 mins) Latest UC News and Development (Justin Morris) 7:50 PM (10 mins) Wrap Up and Prize Draw
  63. 63. LATEST UC NEWS AND DEVELOPMENTS Justin Morris – Country Manager - Australia Modality Systems and Lync MVP
  64. 64. LATEST SKYPE FOR BUSINESS INFO  Call via Work  SILK in Skype for Business  Simplified Patching  Multi-Factor Authentication  Skype Web SDK (previously jLync)
  65. 65. CALL VIA WORK  Say goodbye to RCC  Hello to Call via Work  Smooth transition to Enterprise Voice  On-premises only  Plus CAL required, plan for 2x SIP channels to PBX/PSTN
  66. 66. SILK IN SKYPE FOR BUSINESS  SILK is available in Lync 2013 desktop client today for mobile peer-to-peer calls  SILK will be the default codec for all Skype for Business and Skype P2P sessions. RTA still there for backward compatibility  Conferences won’t use SILK  Supported clients  Lync/Skype for Business desktop client, Lync App  Mobile: Android, iPhone, iPad, Windows Phone  Unsupported clients  VDI Plug-in, Lync Web App, Attendant, Lync Phone Edition
  67. 67. SIMPLIFIED PATCHING Lync Server 2013 Skype for Business Server
  68. 68. MULTI-FACTOR AUTHENTICATION  One of the most requested security/auth features  Replaces passive authentication in Lync Server 2013 (was only on desktop client)  Requires ADFS and Windows Application Proxy for on-premises  Can be enabled just for mobile clients  Uses Azure AD Authentication Library (ADAL)
  69. 69. SKYPE WEB SDK  Previously announced as “jLync” or UCJA  Will enable audio/video scenarios in browser  Requires LWA plug-in at launch  ORTC/WebRTC in the future
  70. 70. VIDEO CALLING BETWEEN SKYPE AND LYNC  Enabled in December  TLS, SRTP, ICE, STUN and TURN in Skype client, SILK in Lync  Available initially, then suspended  Now generally available again  Requires Skype on Windows 7.0.x.100  Support for SkypeIDs coming
  71. 71. CHROME SUPPORT IN LWA  Disabled initially – Chrome user was told to use LWA in another browser  Then everyone exploded, now supported again  December 2014 Lync Server 2013 CU required  Check your servers – there is a user experience impact
  72. 72. NETWORK PLANNING, MONITORING, AND TROUBLESHOOTING WITH LYNC SERVER  Updated Networking Guide released in January  Additional WiFi and QoS guidance  Includes CQM (Call Quality Methodology) queries and PS script to collect KHI data  https://www.microsoft.com/en-us/download/details.aspx?id=39084
  73. 73. LYNC 2013 MOBILITY ENHANCEMENTS  More settings for voice calls on Windows Phone  VoIP always  VoIP over Wi-Fi only  Cellular  Updates call forwarding settings  Anonymous join, passive authentication and contact management on Android  Add, remove and manage contacts (Lync Online only)
  74. 74. OFFICE 365 SUMMIT - SYDNEY  March 30th and 31st at Hilton Sydney  Free!  Loads of Skype for Business technical content  Architecture, upgrading from Lync 2010/2013, meeting and video enhancements, voice improvements and more  http://summit.office.com/events/office-365-summit-sydney
  75. 75. AGENDA Times Topics 6:00 PM (60 mins) Microsoft Lync and using QoS and SDN to improve the wireless network experience (Guest Speaker - Mark Verbloot) 7:00 PM (30 mins) Networking Break and Pizza 7:30 PM (20 mins) Latest UC News and Development (Justin Morris) 7:50 PM (10 mins) Wrap Up and Prize Draw
  76. 76. THANKS FOR COMING!  Next event is Wednesday 20th May.  Keep an eye on www.sydneyuc.org for more info.  Please complete your evaluation forms to win one of three Jabra devices!

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