wireless lan design and deployment of rich media networks

80
© 2011 Cisco and/or its affiliates. All rights reserved. Cisco Public BRKEWN-2000 1 BRKEWN-2000 Larry Ross WLAN Design and Deployment of Rich Media Networks Technical Marketing Engineer

Upload: cisco-wireless

Post on 28-Nov-2014

493 views

Category:

Documents


3 download

DESCRIPTION

Technical presentation on Wi-Fi channel designs for voice and video calls, including bandwidth management of the Wi-Fi cell and Wireless LAN Controller configurations for VoWLAN and Wi-Fi SIP calls.

TRANSCRIPT

Page 1: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 1

BRKEWN-2000

Larry Ross

WLAN Design and

Deployment of

Rich Media Networks

Technical Marketing Engineer

Page 2: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 2

Agenda

AP3500Wi-Fi Channel Bandwidth Management for

Multiple Application Types

Configure for Capacity – Voice & Video

Bandwidth for Call Admission Control

Configure for best Channel Utilization – Data

Rates, Legacy Beam Forming & Band Select

802.11 Channel Design for VDI

Bringing 802.11n Enhancements together

for a better Data, Voice, and Video WLAN

WLAN QoS for Voice & Video

Page 3: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 3

Wi-Fi Channel Bandwidth

Management for

Multiple Application Types

Page 4: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 4

Bandwidth

QualityScale

Cisco Media Ready Wireless LAN

VideoStream

ClientLink

End-to-End QoS

Call Admission

Control

Spectrum

Analysis

802.11n

BandSelect &

LoadBalancing

Cisco

Media

Ready

WLAN

Page 5: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 5

1 6 11

1997 Data Rates

1 & 2 Mbps

Throughput

about

0.8 Mbps

Three 5 Pound Bags

If your 5 pound bag is full of 2Mbps traffic how are you going to fit in 300 Mbps

Page 6: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 6

The Radio Frequency Protocols in Those Three

2.4GHz Bags From Just Your Smart Phone

•4 different Wi-Fi protocols

802.11, 802.11b, 802.11g, and 802.11n

•3 different technologies

802.11 Wi-Fi , Wi-Fi Direct, and Bluetooth(BT)

•3 different BT protocols and soon to be 4

1.2, 2.0 plus EDR, 3.0 plus HS, and 4.0

Train Wreck Waiting to Happen

• BT specification information is in the addendum

Page 7: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 7

Continued

•Doing 3 different basic applications:

• Voice, Video, and Data from the same device

•How many different communication protocols are used in each of those applications?

•How many of those applications are a direct port from Ethernet which does not have roaming?

•When layer 2 changes, is the application still going to work?

Train Wreck Waiting to Happen

Page 8: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 8

The Wreck Is Here

Page 9: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 9

•Do you consider what your Bluetooth radios will do to the performance of the Wi-Fi radio of the colleague two cubes away from you?

•The manufacturers and the specifications claim co-existence:

•That is between that client‟s Wi-Fi radio and it‟s BT radio and the paired BT radio. Examples are BT headset, mouse and keyboard.

•What happens during pairing?

•What happens to the bandwidth of your neighbors?

•What happens with BT 3.0?

• You build a secure WLAN and then put all near data over an insecure BT PERSONAL AREA NETWORK (PAN)

Bluetooth Client Device Radios

Page 10: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 10

BLUETOOTH PAIRING MODE

Page 11: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 11

• When using a headset, the Wi-Fi voice packets will be replicated by the BT radio at much slower BT data rates on the 2.4GHz channels used by Wi-Fi.

• In multichannel 2.4GHz Wlan, that means those slow BT packets will affect all Wi-Fi channels.

• A BT chipset may be built for the 3.0 specification, but the BT driver may be using a earlier device code.

• The previous slide shows early BT specification behavior.

Bluetooth Continued

Page 12: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 12

Recommendations:

• 11n Packet Aggregation Configuration for Dense Video/Voice

• Manage out all possible interferers

• Manage out all possible low data rates

• Use MIMO antenna technology to its fullest extent

• Use Legacy Client Link and Future 802.11n Client Link

• Use Band Select

• Use Call Admission Control

• Use Multicast Direct

• Enable Windows XP and Windows 7 QoS

Bandwidth Management

With “Video Calling”: Now More Important Than Ever

Page 13: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 13

One Cius with Three Different Application

Packet Types

• 3 Wi-Fi Media Access Categories used Simultaneously on One WLAN SSID by the Cius

• The WLAN is Configured for Voice

The Voice AC Sent 30413 G722 Codec Packets

The Video AC Sent 18647 Dynamic RTP Packets

The Best Effort AC Sent 1220 ICMP Ping Reply Packets

This was Captured from the AP CLI -> Show Cont D1

Page 14: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 14

Recommended Enterprise

A-MPDU and A-MSDU Settings

The Current Default Settings are not

Optimal for Densely Deployed WLANs

Page 15: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 15

Recommended MPDU & MSDU Settings

Default

• A-MPDU

User Priority 0, 4, 5 = Enabled

User Priority 1, 2, 3, 6, 7 = Disabled

• A-MSDU

User Priority 0, 1, 2, 3, 4, 5 = Enabled

User Priority 6, 7 = Disabled

Recommended

• A-MPDU

User Priority 0, 3, 4, 5 = Enabled

User Priority 1, 2, 6, 7 = Disabled

• A-MSDU

User Priority 1, 2 = Enabled

User Priority 0, 3, 4, 5, 6, 7 = Disabled

The 7.0.116.0 Default A-MPDU and A-MSDU

Check for Recommended Changes in each Code Release

Page 16: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 16

A-MPDU & A-MSDU WLC Configuration

• Recommended for WLAN Network with a dense Deployment of Video Call Capable Wi-Fi Phones

Including: Skype, Face Time, Cisco Cius & Social Media

These configurations are on the CLI only:

• Enable A-MPDU on UP 4,5

• Disable A-MSDU on 4,5,6 priorities.

• Syntax -> config 802.11a 11nsupport a-mpdu tx priority <0-7> enable/disable

• Examples ->

config 802.11a 11nsupport a-mpdu tx priority 5 enable

config 802.11a 11nsupport a-msdu tx priority 4 disable

• 11n Packet Aggregation Configuration for Dense Video/Voice

Page 17: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 17

2.4GHz Cius 720p Video Call to Cius Video

Call without CLI Changes

30%

Packet

Loss

Page 18: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 18

• Top half of Wireshark Screen Shoot

2.4GHz 720p Video Call RTP Analysis

Page 19: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 19

• Wireshark computes a 108% Packet Loss in this stream.

2.4GHz 720p Video Call RTP Analysis (Continued)

Page 20: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 20

Video Call After A-MSDU and A-MPDU Changes

Page 21: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 21

Configure for Capacity – Voice & Video Bandwidth for Call Admission Control

Page 22: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 22

Xoom, iPad, Galaxy Tab, Droid Charge, Cius

& iPhone

Different Devices with Different Levels of Wi-Fi and QoS support

So, they Don’t ALL Behave the Same on Your Enterprise Network!

Page 23: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 23

Thomas Edison’s Telephonescope

Page 24: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 24

However They Can Share the Same WLAN

• Create the WLAN for both 2.4GHz and 5GHz Wi-Fi Bands

• Let the Device find the Best Band and Enable Cisco Band Select to Encourage the other devices to use 5GHz

• Use a Security Type that is Common to All

• Don‟t Expect

• Them to Roam the Same on Channel Changes

• Roaming Ultimately is Done at the Client Wi-Fi Driver Level

• QoS Markings for Similar Applications Maybe Different at the Wi-Fi

• Battery Saving Sleep Modes Will Differ

• Best Practice for Smart Phones is Routinely Check for Firmware Updates

• Apple Added Voice and Video 802.11e QoS in 4.3

• Wi-Fi Radio Power and Antenna Differ

Find the Common Ground

Note: The Above is also True of Laptops

Page 25: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 25

802.11e CAC for Video Calls

TSPEC CAC and SIP CAC Share the Same Bandwidth Reservation. Video has a BW Reservation

Page 26: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 26

Configure for best Channel Utilization – Data Rates, Legacy Beam Forming & Band Select

Page 27: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 27

• Do you need 1997?

• Do you need CAT3? 10GigCat6 Ethernet Cable?

• Do you plug 10Mbps Ethernet NICs into 1 GIG switch ports?

• Do you need 1997?

That is the first year of Wi-Fi. 1 & 2Mbps

• 1999 is 802.11b Wi-Fi and 5.5 & 11Mbps

Data Rates vs. Channel Utilization

Is it time to re-cycle your

WLAN Bandwidth?

Page 28: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 28

• The denser the deployment of APs, the higher the first required data rate (recommendation from Cisco)

• If the AP deployment is not dense, the lower data rates may be necessary to provide coverage

• With the G.711 codec and the overhead of the 802.11 protocol, the cell throughput does not increase at data rates above 24Mbps

The Data Rate Influence on CAC Bandwidth

Tuned 802.11b/g Data Rates:

Page 29: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 29

Site Planning – Based on Application

ABG

ABG

ABG

ABG

•Data

• Rate & Range

•Voice

• Rate & User Density

•Video

• Rate & User Density

•VDI

• Rate & Range

Page 30: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 30

802.11 Channel Design for VDI

Page 31: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 31

•Does 792x Work Well?

•What is Current Channel Overlap?

•What is the Current Range?

•What are the Current Data Rates?

•Are the Cells Built on -67dBm Edge?

•What is the Wi-Fi Channel Utilization CU%? -Throughput Does Not Increase once the CU Reaches 33%.

What Is a Well Designed Coverage Plan?

Page 32: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 32

Ideal Environment for 802.11b/g/a/n Phone Clients

the Cell Edge Recommendation Is -67dBm.

• A typical deployment showing a 10–15% overlap from each of the adjoining cells. Provides almost complete redundancy throughout the cell.

• With 5GHz there are enough channels available there should be no need to have a co-channel design, but this would the recommendation for dense 5GHzdeployments and for all 2.4GHz deployments

• The same design principle applies for deployments using 802.11n APs.

The separation of

same channel cells

should be: 19 dB

-67dBm -86dBm

The RADIUS

of the cell

should be:

–67 dBm

Channel 36

Channel 44

Channel 149

Channel 1

Channel 6

Channel 11

or

This example shows just 3 of the 5GHz 11a or bounded 11n channels.

Page 33: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 33

How to Measure and What to Measure 1 of 3

• The process is the same for 11b/g, 11a, 11n 20Mhz or 40Mhz wide.

• More and more, the Design is about High Density Capacity.

• How users and how calls are going to be needed in a certain coverage area.

• Call Capacity Max is 26 Audio Calls per Wi-Fi Channel.

• Co-Channel Interference, non-Wi-Fi Interference, Data, Video and CAC Configurations are going to reduce the MAX number of Calls

Page 34: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 34

• Capacity by Coverage Area becomes a DATA RATE and TRANSMIT POWER Configuration Issue.

• Faster Data Rates = Smaller Cells

• Lower Transmit Powers = Smaller Cells

• Loss the Slow Data Rates and High TX Powers then the Cells will be Smaller.

• Smaller Cells = More Cells = More Calls in a Coverage Area

How to Measure and What to Measure 2 of 3

Page 35: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 35

• TEST

Set to “Disabled” all data rates except the estimated best fit data rate

Use the Actual Clients that the User is going to use

Do Live Calls with those Clients

Check the RSSI Reading Off the AP

Find the -67 dBm range by slowly moving away from the AP

Now select a client radio to be the survey benchmark radio

• Disable the Slow Data Rates and abandon High TX Powers -> the Cells will be Smaller

• Smaller Cells = More Cells = More Calls in a Coverage Area

How to Measure and What to Measure 3 of 3

Page 36: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 36

• Pick Your Most Used Client or The Client That Your WLAN Network was Designed Around.

• Find an Area in Your Facility Where That Device‟s Uplink is at -67dBm.

• Move Your New Clients to that Area.

• Then Measure the Uplink dBm Value of Those Clients.

Measure the -67dBm Cell Size to the

Clients

Page 37: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 37

Measure the Uplink at -67dBm on the AP

Page 38: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 38

• Divide by application

• Hardwired client capabilities

• QoS capabilities

• Coverage requirements

• Capacity requirements

• How many SSIDs?

SSID Planning Client/Application Types

Page 39: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 39

VXI -

Cisco Virtualization

Experience

Infrastructure

Page 40: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 40

Desktop Virtualization:

Nomenclature

Desktop VirtualizationSuite of Technologies

Desktop Streaming

Application Virtualization

Terminal Services

VDIVirtual Desktop

Infrastructure

Industry Terms for VDI:Gartner: “Hosted Virtual

Desktop”

IDC: “Centralized Virtual

Desktop”

Cisco

VXI

End-to-End

Architecture

Supporting

Rich Media

/UC

Enhanced

Security

Application

Acceleration

POE /

Energy Wise

Page 41: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 41

Cisco’s Vision for VXI

Borderless

NetworksCollaboration

Data Center /

Virtualization

“Deliver a superior collaboration and rich media user experience

with best in class ROI in a fully integrated, open and validated

desktop virtualization solution”

VXI Virtual

Workspace

Media Rich Experience

TCO / ROI

Security

Integrated System

Page 42: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 42

Cius – A VXI Client Device

• Cius unit requires call control support from CUCM 8.5.

• 802.11a/b/g/n Wi-Fi for On/Off Campus Mobility

Single Stream

• Seamless transition wired to wireless

• Battery – 8 hours (normal usage)

• Docking stations at desk

• Future: 3G/4G data services

Page 43: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 43

Bringing 802.11n Enhancements

Together for a Better Data, Voice,

and Video WLAN

Page 44: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 44

MIMO – MIMO – MIMO

• AP3500 – 802.11n with separate Spectrum Intelligence radios

• AP3500i – Internal MIMO Antennas

• AP3500e – External MIMO Antenna support

• http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10981/data_sheet_c78-594630.html

• CleanAir Technology

• Simplify wireless operations with:

• Automatic interference mitigation for better reliability and performance

• Remote troubleshooting for fast problem resolution and less downtime

• Robust security with non-Wi-Fi detection for off-channel rogues

• Policy enforcement with customizable alerts to prohibit devices that interfere with the network

• http://www.cisco.com/en/US/solutions/collateral/ns340/ns394/ns348/ns1070/aag_c22-594304.pdf

• AP1260 – 802.11n External MIMO Antenna support

• Same as the AP3500e but without Spectrum Intelligence radio

• http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps10980/data_sheet_c78-593663.html

• The AP3500s and AP1260 have the same housing and PoE requirements as the AP1140

Access Points

Page 45: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 45

• For VoIP Snooping and VoIP Reporting enable this option.

WLAN – Advanced Settings

Page 46: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 46

Access Points -> Radio -> 802.11a/n -> DetailThe Statistics Provide WLAN Performance Info – 1 of 3

Page 47: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 47

Access Points -> Radio -> 802.11a/n -> Detail

Profile Information on Noise and Channel Load – 2 of 3

Page 48: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 48

Access Points -> Radio -> 802.11a/n -> Detail

Profile Information on Noise and Channel Load – 3 of 3

Page 49: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 49

Access Points -> Radio -> 802.11b/g/n -> Detail

CleanAir Info From the Access Point – 1 of 2

Page 50: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 50

Access Points -> Radio -> 802.11b/g/n -> Detail

CleanAir Info From the Access Point – 2 of 2

Page 51: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 51

WLAN QoS for Voice & Video

Page 52: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 52

SIP Based QoS (WLC code stream 6.0)

• Intercept and snoop SIP traffic (AP: Upstream, WLC: downstream) to determine voice session and set QoS

• RFC 3261 compliant client

SIP Based CAC (WLC code stream 7.0)

Adding to the SIP Based QoS of Release 6

• Enable the network to roam voice session between APs based on available bandwidth

• Feature is applicable to SIP phone w/o TSPEC.

• Bandwidth parameters are configured manually on per session bases

The WLC has 1 Media Time Parameter

The Wi-Fi has 1 Channel Utilization Value for the AP‟s Radio

Wi-Fi 802.11e CAC & SIP CAC

Page 53: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 53

A Trace of the Beacon for the AP Shows MT

Channel Utilization & Available Admission Capacity

Page 54: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 54

Cius WLAN Voice & Video Packet Count

Percentage wise, by packet count, the Voice and Video are fairly similar.

But the Video packets are nearly 4 times bigger. Therefore taking up

substantially more bandwidth, if assigned the same QoS as Voice packets.

50.9%

512-1023

4.3%

1024-2048

10.0%

2048-2346

5.3%

256-511

29.0%

128-255

Page 55: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 55

Cius WLAN Voice & Video Byte Count

Percentage wise, by packet size, the Voice used 20% of the bytes and

Video used 77.7% of the bytes, taking up substantially more bandwidth.

The Video packets of the 9971‟s ranged from 110 to 939 bytes.

Page 56: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 56

Eleven Cius Videos on One 5GHz Channel

Page 57: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 57

• Client Voice packet has a 802.11 UP = 6

• Client Video packet has a 802.11 UP = 5

Cius Decode

Page 58: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 58

• Client Voice packet has a 802.11 UP = 0 with a DSCP = EF

• Client Video packet has a 802.11 UP = 0 with a DSCP = AF

IP Communicator

in SIP Mode &

Without Windows

QoS Enabled

Page 59: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 59

• Forwarded Client Voice packet has a 802.11 UP = 6 and maintains DSCP = EF

AP

Forwarded

Voice

Decode

Page 60: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 60

• Forwarded Client Video packet has a 802.11 UP = 0 and maintains DSCP = AF

• The Video is not given the 802.11 upgrade because the WLAN is „Voice‟.

AP

Forwarded

Video

Decode

Page 61: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 61

• Smart Phones capabilities are changing rapidly. Regularly review what devices in your environment and their Wi-Fi and BT behaviors are.

• 802.11n Packet Aggregation configuration recommendations are likely to change in the next couple code releases. Check the release notes for possible updates on configurations.

• BT and Wi-Fi Direct do share the same frequencies as Wi-Fi and will consume channel bandwidth. Claims that they are not is untrue.

• MIMO Antennas and Beam Forming are your friends.

Key Takeaways

Page 62: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 62

• Receive 25 Cisco Preferred Access points for each session evaluation you complete.

• Give us your feedback and you could win fabulous prizes. Points are calculated on a daily basis. Winners will be notified by email after July 22nd.

• Complete your session evaluation online now (open a browser through our wireless network to access our portal) or visit one of the Internet stations throughout the Convention Center.

• Don‟t forget to activate your Cisco Live and Networkers Virtual account for access to all session materials, communities, and on-demand and live activities throughout the year. Activate your account at any internet station or visit www.ciscolivevirtual.com.

Complete Your Online

Session Evaluation

Page 63: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 63

Visit the Cisco Store for

Related Titles

http://theciscostores.com

Page 64: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 64

Page 65: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 65

Thank you.

65

Skinny Client Control Protocol

Data Length: 4

Reserved: 0x00000000

Message ID: 0x00000007

On Hook Message

On Hook

Page 66: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 66

Addendum

Page 67: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 67

Proof That We Had a SIP Marked UP a

SIP Media Packet Between the AP and

the WLAN Infrastructure.

Page 68: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 68

• User Access Verification

• Username: cisco

• Password:

• AP0022.90e3.373c>en

• Password:

• AP0022.90e3.373c# show controller d1

• interface Dot11Radio1

• Radio AIR-AP1140A, Base Address 0021.1bfc.4280, BBlock version 0.00, Software version 2.10.3

• Serial number: FHH123000CW

• Number of supported simultaneous BSSID on Dot11Radio1: 16

• Carrier Set: Americas (OFDM) (US) (-A)

• Uniform Spreading Required: Yes

• Configured Frequency: 5745 MHz Channel 149

Show 802.11a AP Radio Information

Via AP Console ( Serial or Telnet)

Page 69: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 69

• QBSS Load: 0x6, Policing Stats: Rx downgrades 112, Tx downgrades 0

• Classifier Stats tx_on_up6 0, tx_on_up4 2211

• Configured Local Access Class Parameters

• Back : cw-min 4 cw-max 10 fixed-slot 7 admission-cont

• Best : cw-min 4 cw-max 10 fixed-slot 3 admission-control Off txop 0

• Video : cw-min 3 cw-max 4 fixed-slot 2 admission-control Off txop 0

• Voice : cw-min 2 cw-max 3 fixed-slot 2 admission-control On txop 0

• SIP stats sip_udp_rx_pkt 1162, sip_tcp_rx_pkt 1049,

• downlink classified_pkt 38803,

• uplink classified_pkt 39408,

• num_processed_SIP_Calls 16

• Transmit queues: In Progress 0

• ---- Active --- In-Progress --------------- Counts --------------

• Cnt Quo Bas Max Cnt Quo Bas Sent Discard Fail Retry Multi

• Uplink 0 0 0 0 0 0 0 0 0 0 0 0

• Voice 0 0 0 0 0 0 0 73345 0 2 4470 1777

• Video 0 0 0 0 0 0 0 370 0 0 26 10

• Best 0 3 646 3 0 3 150 4941 0 0 67 34

Continuing ‘show cont d1’ From the AP

Page 70: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 70

SIP VoIP Call Failure in This Case

SIP Information on the WLC Monitor Page

Page 71: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 71

• These logs can be forwarded to syslog servers.

WLC – Trap Logs

Page 72: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 72

• This is the original packet from the PC client radio to the AP.

• This is a voice packet from a softphone application.

• The 802.11 header and IP header have QoS values of „0‟

• RTP Sequence number is x‟10B6‟.

Tracing Voice QoS Marking with Snooping

Page 73: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 73

• This is the second have of the packet from the PC client radio to the AP.

• The original voice packet from the softphone application has a RTP sequence number of 4278 (hex 10B6).

• The 802.11 header and IP header have QoS values of „0‟

The Client Packet Sequence Number

Page 74: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 74

• This is the same packet with a CAPWAP wrapper.

• The packet is being forwarded by the AP to the WLC.

• The original voice packet from the softphone application has a RTP sequence number of 4278 (hex 10B6).

• The CAPWAP header has voice QoS.

The Client Packet Between the AP and WLC

Page 75: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 75

IP Communicator 8.6 on Windows 7

with QoS Profile Enabled.

This was a HD 720p Video Call.

Page 76: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 76

IP Communicator 8.6 on W7 with QoS

•HD Video – Call

• Voice G722 Packet

• DSCP = AF (41)

• 802.11e User Priority

(UP) = 4

• The Typical VoWLAN UP

Would Be 6

Page 77: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 77

Same Call – This Is Next IP Comm

Packet

• Dynamic RTP Packet

• DSCP = AF (41)

• 802.11e UP = 4

• The Typical VoWLAN UP

Would Be 5

• This Keeps Both Packets in the Same 802.11e Access Category (AC), and Therefore Serialized Media Access

Page 78: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 78

Bluetooth

Page 79: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 79

ClassMaximum Permitted Power Range

(approximate)mW dBm

Class 1 100 20 ~100 meters

Class 2 2.5 4 ~10 meters

Class 3 1 0 ~1 meter

Basic BT Spec Basics

Version Data Rate Maximum Application Throughput

Version 1.2 1 Mbps 0.7 Mbit/s

Version 2.0 + EDR 2-3 Mbps 2.1 Mbit/s

Version 3.0 + HS Perhaps 24 Mbit/s(note: only with AMP, and depends on the

AMP. BT itself remains 2.1 Mbit/s max)

Version 4.0 Perhaps 24 Mbit/s(note: only with AMP, and depends on the

AMP. BT itself remains 2.1 Mbit/s max)

Alternative MAC and PHY (AMP) Implementation

Bluetooth - From Wikipedia, the free encyclopedia

Page 80: Wireless LAN Design and Deployment of Rich Media Networks

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco PublicBRKEWN-2000 80

End of Addendum