Bonjour,
Microsoft vient de mettre à jour un ensemble de document de planification, supervision et de diagnostic des composants réseaux, systèmes Lync 2010/2013. Le zip Lync_Server_Networking_Guide_v2.zip http://www.microsoft.com/en-us/download/details.aspx?id=39084 comprend:
- le guide livrable Lync_Server_Networking_Guide_v2.docx
- des requêtes SQL (QoE) pour Lync 2010 et 2013
- un Excel permettant de synthétiser les performances clés d’un Lync 2010 (avec le script ps qui met en place la collecte des performances)
Le document concernant le réseau est remarquable. Très complet. Merci à toutes les équipes pour ce référentiel indispensable.
Cordialement
Laurent TERUIN
Ci-dessous la table des matières impressionnant non ?
Contents
2.1.2.2 Virtual Private Network (VPN) 14
2.1.2.4 Symmetric versus Asymmetric Links 15
2.1.3.1 Power over Ethernet (PoE) 17
2.1.4 Qualified Network Devices 17
2.3.1.1 Peer-to-Peer Session 20
2.3.1.3 PSTN/Mediation Server Session 21
2.3.2.1 Video Codec Bandwidth 23
2.3.2.2 Video Resolution Bandwidth 23
2.3.2.3 Impact of Multiple Video Streams in Lync Server 2013 25
2.3.2.3.1 Lync Server Bandwidth 25
2.3.2.4 Audio Capacity Planning for PSTN 26
2.3.3 Bandwidth Estimation for Redundant Links 26
2.4.1 Simulating Estimated Amount of Bandwidth Required 27
2.4.1.2 Conferencing Scenarios 27
2.4.2 Identifying Sites for Lync Server Traffic Simulation 29
2.4.3 Lync Server Real-Time Scenarios to Be Simulated 29
2.4.4 Recommended Tools for Lync Server Traffic Simulation 29
2.4.5 Traffic Simulation Best Practices 30
2.5 Call Admission Control (CAC) 31
2.5.1 Multiple Call Admission Control Systems 31
2.6 Quality of Service (QoS) 32
2.7.1 Manual Port Configuration Scenarios 33
2.7.2 Quality of Service (QoS) for Modality Types 33
2.7.4 Internal Firewall Placement 33
2.7.5 Minimum Number of Ports for Workloads at Scale 34
2.7.6 Configuring Manual Ports for the Lync Client 34
2.7.7 Configuring Port Ranges for Application, Conferencing, and Mediation Servers 35
2.7.8 Configuring Dedicated Port Ranges for Edge Servers 37
2.7.9 Verifying Manual Port Configuration – Client Side 38
2.7.10 Verifying the UC Port Range Is Enabled for Lync Clients 38
2.7.11 Configured UC Port Range Example (from a Sample Lync-UccApi-0.UccApilog) 38
2.7.12 Verifying Manual Port Configuration – Server Side 39
2.7.13 Traffic Prioritization for Real-Time Communications 39
2.8.2.2 Wi-Fi Multimedia (WMM) 41
2.8.3 Wi-Fi Certification for Lync Server 41
2.8.4 Wi-Fi Challenges and Recommendations 42
2.8.5.3.1 Preassessment Questionnaire 44
2.8.5.3.4 Presenting Results 45
2.9.1 Network Change Control Process 45
2.9.1.1 Network Requirements 46
2.9.1.2 Change Management Roles 46
2.9.1.3 Change Management Process 46
2.9.2 Network Incident Management 47
2.9.3 Real-Time Applications 47
3. Deployment and Monitoring 48
3.1 Elements that Require Monitoring 48
3.1.1.1 Common Server Health KHIs 49
3.1.1.2 Role-Specific Server Health KHIs 49
3.1.2.1 Network Device KHIs 50
3.1.2.2 Lync Server Call Network Metrics 50
3.2.1 IP-PSTN Gateway Configuration Drift 53
3.2.2 Lync Server Configuration Drift 53
3.2.3 Network Configuration Drift 54
3.4 Product Features that Provide Monitoring Data 54
3.5 Third-Party Solutions that Provide Monitoring 55
4.1 Troubleshooting Scenarios 56
4.1.1.1 Problem Report Scenario 56
4.1.1.4 Problem Isolation and Root Cause Analysis 57
4.1.2 Troubleshooting an Individual Lync Voice Quality Issue 57
4.1.2.1 Problem Report Scenario 57
4.1.2.4 Problem Isolation and Root Cause Analysis 60
4.2 Troubleshooting Methodologies 60
4.2.1 Troubleshooting a Network Segment 61
4.2.1.1 Network Router Configuration 61
4.2.1.1.1 Quality of Service (QoS) 62
4.2.1.1.3 Speed Sensing Mismatch (Full/Auto) 63
4.2.1.1.4 Nagle Algorithm (TCP only) 63
4.2.1.1.5 Load Balancer Configuration 64
4.2.1.2 Network Hardware Issues 65
4.2.1.2.2 Cable Loop/BPDU Guard Protection 65
4.2.1.2.3 Router CPU Spikes 65
4.2.1.3.2 Access Point Density 66
4.2.1.3.4 Wi-Fi Network Adapter and Driver 66
4.2.1.4 Other Client Network Quality Issues 66
4.2.1.4.3 Virtual Private Network (VPN) 66
4.2.1.4.4 Forced TCP Connection 67
4.2.1.5 Client Endpoint Performance 67
4.2.1.5.1 Power-Saving Mode 67
4.2.1.5.3 Drivers/DPC Storm 67
4.2.1.6 Server Endpoint Performance 68
4.2.1.6.1 Antivirus/Port Scanning Software 68
4.2.1.6.2 Performance Counter Collection and Logging 68
4.2.1.6.3 Network Adapter Configuration 68
4.2.1.6.4 Concurrent Call Load 69
4.2.2 Troubleshooting Device Issues 69
4.2.2.1 Built-in Sound Cards 69
4.2.2.1.2 Digital Signal Processing (DSP) 70
4.2.2.2.1 USB Host Device Driver 71
4.2.2.2.2 USB Hubs and Cabling 71
4.2.2.3 Other Device Issues 71
4.2.2.3.2 Acoustic Isolation 72
4.2.2.3.3 Electrical Isolation 72
4.2.3 Troubleshooting Environmental Issues 72
4.2.3.1.1 Heating, Ventilating, and Air Conditioning (HVAC) Noise 72
4.2.3.1.2 Laptop Fan/Hard Drive 72
4.2.3.2 Microphone Positioning and Audio Device Selection 73
4.2.4 Troubleshooting IP-PSTN Gateways 73
4.2.4.2. Voice Activity Detection/Silence Suppression (VAD/SS) 73
Appendix A. Lync Audio Quality Model 74
A.1.3 Analog-to-Digital Conversion (ADC) 75
A.1.4 Digital Signal Packet Capture 76
A.1.5 Digital Signal Preprocessing (DSP) 76
A.1.8 Protocol Encapsulation 77
A.1.13 Reassembly, Buffering, and Healing 79
A.1.17 Digital-to-Analog Conversion (DAC) 79
Appendix B. Lync Server QoE Reporting 80
B.1 Lync 2010 QoE Database Schema 80
B.2 QoE Table Join View Example 81
B.3.3 Configuration Parameters 83
B.4 Managing Lync Server Quality 83
B.4.1 Corporate Average Audio Quality 83
B.4.3 Media Quality Summary Report 84
B.4.4 Managed versus Unmanaged Infrastructure Reporting 87
B.5.4 AV MCU-Mediation Server Report Example 88
B.5.4.2 Counting Poor Calls 91
B.5.4.3 Caller/Callee Handling 91
B.5.5 Mediation Server-IP PSTN Gateway Report Example 91
B.6.1 Wired Subnet Report Example 94
B.6.2 Wireless Subnet Report Example 96
B.7 Linking to External Data Sources 96
B.8 Trending and Data Retention 97
B.9 Using User Experience Metrics 97
B.9.1 Mean Opinion Score (MOS) 100
B.9.2 Network MOS (NMOS) versus NMOS Degradation 101
B.10 Other Reporting Examples 101
Appendix C. Call Quality Methodology – a practical approach 105
C.2 Server Plant Breakdown 112
C.2.2 Server-to-server reports: AV MCU to Mediation Server and Mediation Server to Gateway 113
C.2.3 IP-PSTN Gateway Health 114
C.3.3 Media Path – VPN & Relay 118
C.3.4 Media Path – Transport 119
Appendix D. Troubleshooting Poor Streams 127
D.1 RTP and RTCP (Packet Loss Troubleshooter) 127
D.1.3 Receiver Report and Sender Report header structure 128
D.3 Example Scenario – Investigate Packet Loss reported between Mediation Server and Gateway 131
Appendix E. Troubleshooting Duplex and Speed Sensing Mismatch (Full/Auto) 136
F.2 Debugging Tools for Windows 137
F.4 Error String Display (CSError.exe) 137
F.5 Microsoft Exchange Troubleshooting Assistant 138
F.7 Lync Best Practices Analyzer 139
F.9 Lync Server 2010 Logging Tool 139
F.10 Microsoft Product Support (MPS) Reports 140
F.12 Network Monitor Parsers 141
F.18 Remote Connectivity Analyzer 142
F.21 Unified Messaging Diagnostics Logging 143
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