So you want to run Lync 2013 over a Wi

Tri-band 60 GHz
11ad/WiGig, 11ac (5
GHz) and 11n (2.4 GHz)
Dual-band 11n
(2.4 and 5 GHz)
Dual-band 11n (2.4
GHz) + 11ac (5GHz)
Single-band 11n
(2.4 GHz)
Wi-Fi and WiGig Chipset Shipments surpass 2B in 2013
Proprietary | © Wi-Fi Alliance
Source: ABI Research, November 2013
Proprietary | © Wi-Fi Alliance
Source: ABI Research, November 2013
1
Network Bandwidth Requirements for Media Traffic
Ref: Delivering Lync 2013 Real-Time Communications over Wi-Fi
Property
Conferencing Server
Application Server
Mediation Server
Packet Type
Starting Port
Number of Ports Reserved
AudioPortStart
49152
49152
49152
Application sharing
40803
8348
AudioPortCount
8348
8348
8348
Audio
49152
8348
VideoPortStart
57501
--
--
Video
57501
8034
VideoPortCount
8034
--
--
Totals
--
24730
ApplicationSharingPortStart
49152
--
--
ApplicationSharingPortCount
16383
--
--
Client Traffic Type
DSCP
Source IP
Destination IP
Protocols
Source port range
Destination port range
Audio
46
Any
Any
TCP/UDP
49152:57500
Any
Video
34
Any
Any
TCP/UDP
57501:65535
Any
App Sharing
24
Any
Any
TCP/UDP
40803:49151
Any
Client Traffic Type
DSCP
Source IP
Destination IP
Protocols
Source port range
Destination port range
Audio
46
Any
Any
TCP/UDP
Any
49152:57500
Video
34
Any
Any
TCP/UDP
Any
57501:65535
App Sharing
24
Any
Any
TCP/UDP
Any
40803:49151
False
5350
5350
5350
5350
Client Traffic Type
Port Start
Port Range
Audio
50020
20
Video
58000
20
Application sharing
42000
20
File transfer
42020
20
Client Traffic Type
DSCP
Source IP
Destination IP
Protocols
Source port range
Destination port range
Audio
46
Any
Any
TCP/UDP
50020:50039
Any
Video
34
Any
Any
TCP/UDP
58000:58019
Any
App Sharing
24
Any
Any
TCP/UDP
42000:42019
Any
File Transfer
14
Any
Any
TCP/UDP
42020:42039
Any
UCOIP
Vendor
Qualified Device
Firmware Version Tested
Aruba Networks, Inc.
Mobility Controllers and AP-104/105/134/135 Access Points
AOS 6.1.3.2 and higher
Cisco Systems
AIR-CT5508-K9 and AIR-CAP 3602E-A-K9, with SW 7.5.102.2
V01
Dell, Inc.
PowerConnect W-Series Mobility Controllers and W-AP104/105/134/135 Access Points
AOS 6.1.3.2 and higher
HP
MSM720/MSM760/MSM765 zl/MSM775 zl Wireless LAN Controllers and
MSM430/MSM460/MSM466/MSM466-R and HP 425 Access Points
6.0.1.1 and higher
Juniper Networks
Wireless LAN Controllers, WLA532 Wireless LAN APs
MSS 8.0 and higher
Motorola Solutions
NX 9510 (controller) and AP-7131
WiNG 5.5.0.0
http://www.microsoft.com/enus/download/details.aspx?id=36494
Most IT customers know they have Wi-Fi issues, but they do not know
how to identify, fix and validate them!
Behavior
Ethernet
Wi-Fi
Impact on Lync
Full wire rate
Yes
No
Networks are often under designed for intended Lync load
PHY data speeds
Fixed, PtP
Full Duplex
Variable, Shared,
Half Duplex
One slow client can ruin Lync experience for all users on the AP
Client integration
Simple
Complex
Highly variable client device implementations lead to highly variable Lync
experience
Mobility
Stationary
Mobile
Lync sessions often deteriorate when clients are distant from the AP or
when they roam
Installation
Forgiving
Critical
Variable Lync experience depending upon physical location
Wi-Fi networks rarely fail outright – they are mostly operational, but not optimal
Most difficult situation to detect and fix
Signal Strength
Lync Application
Performance
Good signal strength does not guarantee
good Lync performance
Data Center
Wireline
Infrastructure
Access Router
WAN
Wi-Fi
Controller
Components
•
•
•
•
•
•
•
•
Access Points
Clients
Lync Client App
Client Devices
Wi-Fi access points
Wi-Fi Controller
Wireline Infrastructure
WAN Access
Data Center
Lync Server
Wi-Fi
Assessment
WAN
Assessment
Scalability
Determine systems ability to support specific number of clients with
acceptable Lync performance
Stability
Analyze the long-term stability of the Wi-Fi network over to ensure reliable
operation over time
Coverage
Lync performance & RF coverage by physical location
Lync performance by client devices: laptops, phones, tablets, etc.
Discovery Phase
Understand what network environment exists
Understand user modalities
Modeling Phase
Determine Lync utilization per AP
Traffic Simulation
Using a Lync Traffic simulator, connect clients and apply real traffic to
production network and monitor factors that affect the quality of Lync traffic:
delay, jitter, and packet loss
Report
Analyze factors affecting quality and produce a full report with
recommendations
Table of Contents
Summary of engagement
Overall conclusions & recommendations
Scalability results
Sites 1-4 analysis: summary, coverage, stability
 APs cannot support QoS at targeted scale
 Enable QoS, upgrade AP, enable dual bands, reduce power
 Scope rollout of Lync to match capacity
 Degraded Lync experience during busy hour
 Introduce QoS, add another AP
 Clients roam unexpectedly during testing
 Change client devices, disable ARM/RRM
 One client has highly variable performance
 Change roaming aggressiveness, enable QoS
 Traffic looks good overall, but is degraded in some locations
 Look at AP installation, wireline network, band preference
Final Report
Problem
Scalability
Stability
Coverage
Using Lync Without Network
Changes
Follow on Services for Network
Upgrades
Limit scale or services
Reconfigure network
Upgrade network capacity
Must address
Reconfigure network
Upgrade network
Reconfigure clients
Change clients
Limit usable coverage
Upgrade network
Reconfigure clients
Change clients
Partners can offer these as value added services;
Ixia can be your partner.
Step
Supporting Material & Actions
Contact Ixia
Email testlync@ixiacom.com to get started
Position Wi-Fi Assessment to
customer
Sales presentation & product brochures
Ixia can assist with all aspects of Wi-Fi Assessment.
Discovery
Understand what network
environment exists
Asking the right questions
Modeling
Determine Lync utilization
per AP
Traffic Simulation
Traffic simulator apply real
traffic
Reporting
Analyze factors that affect
quality, and produce a full
report with
recommendations
dfrost@ixiacom.com
dfrost@ixiacom.com
(*) Look under Networking @ Infrastructure qualified for Microsoft Lync