QoS Design and Deployment ford2zmdbbm9feqrf.cloudfront.net/2014/usa/pdf/BRKRST-2515.pdf · QoS Design and Deployment for Wireless LANs ... • End-to-End QoS Network Design, 2nd ...

QoS Design and Deployment for Wireless LANs

BRKRST-2515

Robert Barton, P.Eng

Systems Engineer

CCIE #6660

CCDE #2013::6

© 2014 Cisco and/or its affiliates. All rights reserved. BRKRST-2515 Cisco Public

Presentation Source Material

• End-to-End QoS Network Design, 2nd Edition

• First Edition is a top selling Cisco Press book, but . . .

– It was time for a 2nd edition!

• Book is organized around PINs (Places in the Network), e.g. Data Center, WAN, Wireless LANs, VPN, Campus

• Content in this session primarily based on the “WLAN QoS Design” section

3

Now Available!


Agenda

• Wireless QoS Building Blocks

• IEEE 802.11e and Wireless Multimedia (WMM)

• WLAN QoS Tools And Considerations

• Cisco WLC QoS Design Strategies

• Developing A Unified QoS Strategy For The WLAN

• Wrap-up

4

Wireless QoS Building Blocks


Comparing Wired and Wireless QoS

• Wired environments are Full Duplex, Wireless is Half Duplex

– Half duplex environments are very susceptible to collisions

• Thus, wired QoS is mostly concerned with managing packet loss due to congestion problems (solved with queuing, etc.)

6

Wireless QoS is focused on a much bigger problem:

1. WLAN QoS is mostly concerned with reducing the probability of a collision for high-priority traffic, based on it’s QoS classification

2. Managing congestion is a secondary concern


Will the Half-Duplex Problem Ever Get Solved?

• IEEE 802.11 High Efficiency WLAN (HEW) Study Group

– As a follow-on to 802.11n/ac, the HEW SG is trying to define the next generation of Wi-Fi

– Full Duplex wireless communication is being discussed

• HEW Task Group is expected to start work this summer

– Don’t expect Full-Duplex Wi-Fi any time soon!

7


Carrier Sense Multiple Access / Collision Avoidance

• Wired Hubs use CSMA/CD (collision detection)

– A transmitting station will first listen to the medium to see if it is idle before sending it’s frame. When it seems idle, it sends the frame.

– After sending, it listens to see if a collision occurred (the wired link is a closed system)

8

• 802.11 networks use CSMA/CA (collision avoidance)

– Wireless networks have no way to detect that a collision even occurred!

– CSMA/CA accepts collisions will occur, but has a system for dealing with them once they do.

– Hint: what do you do on a conference call when more than one person speaks at the same time?


Who Gets the Higher Transmission Priority?

9

1. Access Point

2. Wireless Client

3. They all get equal access

Other channel access models have been proposed. These models allow the AP to organizes channel access in a structured way, but these have never been widely adopted

1. Legacy Point Coordination Function (PCF)

2. 802.11e Hybrid Controlled Channel Access (HCCA)


The Distributed Coordination Function (DCF) Algorithm for Media Access

1. Listen first to see if any other transmissions are in progress (i.e. the medium is idle)

2. After the channel is idle, pause for a set period of time (known as the DIFS)

3. Send the frame

4. If a collision occurs (because the medium was busy and an ACK wasn’t received), wait until the medium becomes idle before doing anything else

5. Wait another DIFS period

6. Generate a random number, called the Contention Window (CW) and count it down, then try transmitting again

10


2 Types of Timers: DIFS and Contention Windows

• When ready to transmit, all stations must first wait the DCF Interframe space (DIFS)

– This is a pre-established wait time observed by all stations (all wait the same DIFS period)

• Once DIFS has expired, a random countdown timer, called the Contention Window (CWmin) begins

– Once CWmin expires, the station sends the frame

– If a collision occurrs (because an ACK wasn’t received), double the first CW up to a value of CWmax until the frame can be sent

11

Random Contention Window (CW)

Time (t)

Medium is Busy

Begin Transmission

DIFS ……….


No

12

The DCF Decision Process

Yes

No

Done

Decrement the CW value to zero. If another station begins to

transmit, defer until it is done, then wait another DIFS period before

counting down the CW

Was an ACK received? (i.e.

confirm there was no collision)

Double the previous CW value up to a maximum of

CWmax

Generate a random backoff value between 0

and CWmin

Was the medium idle before the DIFS?

Transmit the Frame

Countdown the DIFS Ye

s


Consider an Example of Five Stations Trying to Unicast all at Once Putting it Together - DCF In Action:

13

Station A

Station B

Station C

Station D

Station E

Frame

Defer

Defer

Defer

Frame

DIFS DIFS

Defer

Frame

DIFS

Frame

Backoff time

Backoff time remaining

Defer

Defer

Defer

Defer

IEEE 802.11e and Wireless Multimedia (WMM)


DCF Needed an Update

• QoS is not possible with DCF:

1. No method of classification (all traffic is treated equally)

2. The DIFS and Contention Window values are the same for all traffic

• IEEE 802.11e was formed and finally ratified in the 802.11e-2007 standard (which is now part of the 802.11e-2012 “rollup”)

– 802.11e set out to make tweaks to DCF that would allows priority handling of high priority traffic

– The Goal: Improve the probability that high priority traffic will be transmitted first

• By the way, what is the difference between IEEE 802.11e and WMM??

15


Enhanced Distributed Channel Access (EDCA)

1. Establishment of four queues (known as Access Categories, ACs)

2. Instead of a single DIFS timer, give different timers to each AC

3. For each AC, assign a different range of contention window sizes of CWmin and CWmax

4. Transmission Opportunity (TXOP)

5. Call Admission Control (CAC) with TSpec

– Other enhancements were also introduced, including: • Power Save mode

Five Key QoS Enhancements

16


Access Categories Act like Transmit Queues

17

Background Best Effort Video Voice

Application Data


The User Priority (UP) QoS Field

• When wireless frames are transmitted, a 3-bit QoS value known as the User Priority (UP) is written into the 802.11 L2 frame

– This is used to classify wireless traffic and place the frames in the correct AC

18

EDCA / WMM AC Name 802.11e UP Value

Voice 6, 7

Video 4, 5

Best Effort 0, 3

Background 1, 2


Comparing WLAN QoS Markings Surprising Differences Emerge . . .

19

Traffic Type DSCP 802.11e UP 802.1p CoS WMM Access Category

Network Control 56 (CS7) 7 7 N/A

CAPWAP 48 (CS6) 7 6 N/A

Voice 46 (EF) 6 5 Voice

Interactive Video

34 (AF41) 5 4 Video

Signaling 26 (AF31) 4 3 Video

X-Data 18 (AF21) 3 2 Best Effort

Bulk Data 10 (AF11) 2 1 Background

Best Effort 0 (BE) 0 0 Best Effort


EDCA Backoff Timers

• EDCF does the following:

– Variable Arbitration Interframe Spacing (AIFS)

– Variable CWmin and CWmax values depending on traffic type

20

EDCA / WMM AC AIFS Number CWmin CWmax

Legacy DCF DIFS > 2 15 1023

Voice 2 3 7

Video 2 7 15

Best Effort 3 15 1023

Background 7 15 1023


Understanding the Effect of EDCA Timers

• By combining these timers, the theoretical probability of higher priority frames getting serviced first is greatly improved (but is not guaranteed in every case)

21


QoS Enhancements for Voice Applications

• EDCA provides two key key optimizations for voice & video over wireless:

22

2. TXOP is a set period of time when a wireless station may send as many

frames as possible without having to contend with other stations. • With legacy DCF operation, a client can only send one frame at a time

before going through the arbitration process again.

• TXOP gives a specified period of time per client to access the medium so it

can send multiple frames.

1. TSpec (Call Admission Control) provides management of the number of

real-time traffic flows, such as voice and video.

Wireless QoS Tools and Considerations


WLAN QoS Toolset Review

24

0 EF

Classification

Marking/Mutation

Shaping/Policing

Queueing

Trust

http://images.google.fr/imgres?imgurl=http://4.bp.blogspot.com/_UZImdYAiry8/Sb9qYmN0llI/AAAAAAAAPtc/a_qXEx69CB0/s400/oracle_logo.jpg&imgrefurl=http://vectorlogo.blogspot.com/2009/03/oracle-logo-eps.html&usg=__TTg6bQ4L8aDCa2kKWUD3Q4YWewM=&h=161&w=400&sz=7&hl=fr&start=3&sig2=xj4d94noyf1kS0Adw6tzJA&um=1&tbnid=LLEUA6II6jNxiM:&tbnh=50&tbnw=124&prev=/images?q=oracle+logo&hl=fr&safe=off&rlz=1T4GGLL_frFR328FR328&um=1&ei=FeHBSvDVKsjKjAeGsfDoBQ


WLAN QoS Toolset Review, Cont’d

25

0 EF

Classification

Marking/Mutation

Shaping/Policing

Queueing

Trust

SET MUTATE



26

Classification

Marking/Mutation

Shaping/Policing

Queueing

Trust

Line Rate

Shaped Rate

Traffic shaping limits the transmit rate to a value lower than line rate

with Traffic

Shaping

without

Traffic Shaping

Line Rate

Policed Rate

Policing discards traffic which exceeds policed rate

without Policing

with Policing



27

Classification

Marking/Mutation

Shaping/Policing

Queueing

Trust

Queue 2 (Access Category 2)

Queue 1 (Access Category 1)



28

Classification

Marking/Mutation

Shaping/Policing

Queueing

Trust

DSCP 46


QoS Markings: Upstream vs. Downstream

• Upstream means traffic originating at the client, headed towards the WLC

• Downstream means traffic destined for the WLAN clients

CAPWAP Tunnel

WLC

AP Client

Radio Upstream Network Upstream

Network Downstream Radio Downstream Ethernet

Switch

802.1q/p 802.11e UP

CAPWAP DSCP DSCP

29

© 2014 Cisco and/or its affiliates. All rights reserved. BRKRST-2515 Cisco Public 30

The Downstream QoS Marking Model

CAPWAP Tunnels Si Si Si Si Si Si

WLAN Controller

AP

Ethernet Switch

CAPWAP Encapsulated DSCP 802.1p DSCP Payload

AP

AP

1 The Ethernet frame is received over an 802.1q trunk by the WLC. The WLC uses the

DSCP value of the IP packet and maps it to the outer DSCP of the CAPWAP tunnel.

802.11 DSCP Payload

1

802.1Q Trunk


The Downstream QoS Marking Model


WLAN Controller

AP

Ethernet Switch

802.1p DSCP Payload 11e UP DSCP Payload

2

AP

AP

1 The Ethernet frame is received over an 802.1q trunk by the WLC. The WLC uses the

DSCP value of the IP packet and maps it to the outer DSCP of the CAPWAP tunnel.

2 Once the Ethernet frame is received by the AP, it maps the DSCP value of the IP packet

to the 802.11e UP value on the wireless frame. The frame is then sent to the client.

CAPWAP Encapsulated DSCP

802.11 DSCP Payload

802.1Q Trunk

1


The Upstream QoS Marking Model

CAPWAP Encapsulated


WLAN Controller

AP

Ethernet Switch

DSCP

3 1

AP

AP

3 1

802.11 DSCP Payload

802.1Q Trunk

11e UP DSCP Payload

The client 802.11e frame is received by the AP. The AP maps the 802.11e UP value

to the outer CAPWAP IP DSCP header


The Upstream QoS Marking Model


WLAN Controller

AP

Ethernet Switch

DSCP 802.1p DSCP Payload

AP

AP

The client 802.11e frame is received by the AP. The AP maps the 802.11e UP value

to the outer CAPWAP IP DSCP header

At the WLC side of the CAPWAP tunnel, the 802.11e frame is bridged to the

Ethernet switch. 2

2

CAPWAP Encapsulated

802.11 DSCP Payload

802.1Q Trunk

3 1

3 1

11e UP DSCP Payload

Cisco WLC QoS Design Strategies


AireOS QoS Profiles

• In the past, as a best practice Cisco has recommended using a separate WLAN (SSID) for voice. What if you are using MS Lync or Jabber for Unified Communications?

This is the most misunderstood concept in Cisco WLAN QoS

35

Cisco WLC Profile Name

Maximum DSCP Value for the Profile

Platinum EF (46)

Gold AF41 (34)

Silver DF (0)

Bronze AF11 (10)

• The Four Precious Metal QoS Profiles DO NOT EQUATE to the WMM ACs.

• For WMM-capable stations, this sets the upper limit of the DSCP value allowed on CAPWAP.

• For non-WMM stations, this establishes the DSCP value on the CAPWAP tunnel and maps to the downstream UP value.


Example – The QoS Profile Sets a DSCP Ceiling


WLAN Controller

AP

Ethernet Switch

CAPWAP Encapsulated DSCP 802.1p DSCP Payload

UP DSCP Payload

AP

AP

802.11 DSCP Payload

Mixed use WLAN (tablets, phones, etc.) configured for the Gold Profile

DSCP 46 gets Marked down to 34, UP marked to 5

5 34

5

46

802.1Q Trunk

46


Step 1: Access the QoS Profile

One of these four default QoS profiles may be used and applied to each WLAN (SSID)

Recommendations:

1. For enterprise class, mixed-use WLANs, use the

Platinum Profile

2. For guest SSIDs use the Bronze Profile • Bronze will classify all traffic to the “background” AC,

with the longest AIFSN and CW wait timers


Step 2: Configure the QoS Profile

38

Create default bandwidth contracts for each user or each SSID Note bandwidth contracts are

bidirectional (values shown here are examples only)

Set the maximum priority for WMM and non-WMM clients Can optionally set the 802.1p CoS value for the QoS profile


Step 3: Apply the QoS Profile to the WLAN

39

Choose the QoS profile you want to apply for this WLAN

In this example, the “Platinum” profile is selected

This sets the ceiling on all traffic to DSCP 46 and UP value to 6

You can also set the bi-directional per-user and per-SSID bandwidth contracts from this screen


IOS-XE QoS Configuration: Step 1


WLC 5760

AP

Ethernet Switch AP

AP

802.1Q Trunk

WLC5760(config)# table-map DSCP-TO-UP

WLC5760(config-tablemap)# map from 18 to 3




WLC5760(config-tablemap)# default ignore

WLC5760(config)# table-map DSCP-TO-DSCP






Radio Downstream Network Upstream

Define The Table Maps for Upstream and Downstream Radio Traffic


IOS-XE QoS Configuration: Steps 2 & 3

WLC 5760

AP

AP

WLC5760(config)# policy-map UPSTREAM

WLC5760(config-pmap)# class-map class-default

WLC5760(config-pmap-c)# set dscp dscp table DSCP-TO-DSCP

!

WLC5760(config)# policy-map DOWNSTREAM

WLC5760(config-pmap)# class class-default

WLC5760(config-pmap-c)# set wlan user-priority dscp table DSCP-TO-UP

WLC5760(config)# wlan ENTERPRISE

!

WLC5760(config-wlan)# service-policy input UPSTREAM

WLC5760(config-wlan)# service-policy output DOWNSTREAM

Create the policy-maps and attach them to the WLAN interface

Apply to the WLAN

upstream and

downstream

Define the

upstream and

downstream

policy maps


Dealing With Non-WMM Clients in AireOS

WMM is critical for QoS - it enables 802.11e UP

“Allowed” permits a mix QoS capable and non-QoS capable devices on same WLAN

802.11n and 802.11ac both support WMM

WMM is necessary for channel bonding


Dealing With Non-WMM Clients in IOS-XE

Recommendation, with a word of caution:

• Generally, it is recommended to set the WMM Policy to “allowed” on both types of

controllers to allow support of both WMM and legacy (non-WMM clients).

• Non-WMM client packets are defaulted to DSCP/UP zero in IOS-XE, but to the

maximum for the profile in AireOS.

WLC5760(config)# wlan ENTERPRISE

WLC5760(config-wlan)# wmm ?

allowed Allows WMM on the WLAN

require Requires WMM enabled clients on the WLAN

!

WLC5760(config-wlan)# wmm required

!

! This is the default setting for all new WLANs

“WMM required” will reject all

legacy clients that do not

support WMM (a potentially

limiting feature)


Example: Comparing a WMM Client Using MS Lync

44

CAPWAP Encapsulated


WLAN Controller

AP

Ethernet Switch

11e UP DSCP Payload DSCP 802.1p DSCP Payload

AP

AP

802.11 DSCP Payload

5 34

34

34

34

802.1Q Trunk

The AP Recognizes the

WMM UP value and maps it

automatically to DSCP 34


Example, Cont’d: With A non-WMM Client (Platinum)

45

CAPWAP Encapsulated


WLAN Controller

AP

Ethernet Switch

802.11 DSCP Payload DSCP 802.1p DSCP Payload

AP

AP

802.11 DSCP Payload

The Client is Not WMM Capable.

AP automatically maps the

CAPWAP DSCP to EF (46)

46

x 34

34

34

802.1Q Trunk


AireOS Solution: Alloy QoS

46


Alloy QoS: QoS Control For Non-WMM Clients

47

Maximum Priority allows you to customize the upper limit QoS marking for a QoS policy

Sets the default QoS markings for all non-WMM clients

Sets maximum DSCP & UP values for WMM clients

Recommendation:

• Use Alloy QoS to treat non-WMM clients as best effort (DSCP and

UP values default to zero).

• If the client doesn’t support QoS, don’t try to give them QoS!


Configure Call Admission Control (CAC)

• CAC refers to the WLC’s capability

to limit the number of voice or video calls on a per-AP basis.

• CAC limits the number of voice clients which can associate to the Access Point.

• In Load-Based CAC the AP monitors percent of BW that has been used on the radio. The AP only admits new flows if there is enough BW to support a new call.

• SIP-Based CAC requires SIP Snooping (not covered in this presentation)

48


CAC Configuration in IOS-XE

49

Recommendation:

• When using voice or video applications, CAC should be

considered a mandatory design element

5760(config)# ap dot11 5ghz cac voice acm

! Enables voice CAC

5760(config)# ap dot11 5ghz cac voice load-based

! This is for the Cisco 792x series phone

5760(config)# ap dot11 5ghz cac voice max-bandwidth <5-85>

! Configure the max RF bandwidth percentage allocated to

WMM clients for voice

5760(config)# ap dot11 5ghz cac voice sip bandwidth 64

! Per-client bandwidth for SIP voice clients

!

5760(config)# ap dot11 5ghz cac video acm

! Enables video CAC

5760(config)# ap dot11 5ghz cac video max-bandwidth <5-85>

Voice CAC configuration

Video CAC configuration


Introducing Application Visibility & Control (AVC) • Introduced in AireOS 7.4, limited capabilities in IOS-based controllers

• Leverages the IOS NBAR2 Engine – same list of traffic signatures as IOS & XE

– AireOS 7.6 introduces “Protocol Pack” support + Cisco Jabber support

• IOS-XE Controllers are limited to “Visibility” prior to version 3.6

50

• Discover which applications are running on your

corporate and guest WLANs

• Prioritize critical wireless apps and de-prioritize

non-business apps

• Monitor voice and video performance on the

WLAN

AVC In The Wireless LAN Controller


Key Points To Know About AVC

51

CAPWAP Tunnels

WLC AP

Client

Ethernet

Switch

In AireOS 8.0, AVC can be

applied in a specific direction

(upstream or downstream)

AVC Policy only functions

here in AireOS

AVC Does Not Function

Here in AireOS

AVC Modifies the inner DSCP value,

thus influencing the CAPWAP DSCP

and wireless UP values

AVC Policy functions here

in IOS-XE, but only does

“visibility” today


AVC Example: Build A Multimedia AVC Policy

52

More Key Points To Know:

Applications are grouped by class (such as “voice-and-video” shown here)

From AireOS 7.6 Protocol Packs are used for signature updates

Approx. 1100 AVC Signatures available today

Updates made via protocol packs


A Simple AVC Remarking Example:

53

AVC has three basic capabilities:

1. Modify the inner packet’s DSCP to a custom value

2. Drop the packet

3. Rate Limit

E.g. Let’s mark MS Lync Media to Gold (DSCP 34)


AVC Example Number 2:

54

MS Lync Policy

Cisco Jabber and IP

Phone Policy

Unwanted applications

Policy – drop or police

AVC can be applied in upstream,

downstream, or both directions

AVC can drop unwanted traffic

AVC has ability to police

applications bi-directionally

Note: AireOS 8.0 is shown here


AVC Example Cont’d: Apply The AVC Policy

55

1. Navigate to the QoS policy for the WLAN where you want to apply the AVC policy

2. Enable AVC

3. Apply the AVC policy you created to this QoS policy


AVC Provides Exceptional Application Visibility

56

Developing a Unified QoS Strategy for the WLAN


QoS Features Are Nice, But A QoS Design Is Critical How Does this fit with the Classic Four-Class QoS Model?

58

Transactional

Data

Realtime

Classes

Best Effort

Control

AF

EF

DSCP

DF

CS

Database Apps,

Email, FTP, Backups

CRM Apps

IP Phones,

TelePresense,

WebEx,

Jabber

Application Examples

Everything Else

SIP, Routing Protocols, Etc.

35% BW Guarantee

WRED

33% of BW,

Strict Priority

QoS Handling

25% BW Guarantee

WRED

7% of BW Guarantee


A Desired Design Might Look Like This:

59

Transactional Data

Realtime

4-Class Strategic

Enterprise Model

Best Effort

Control

Voice

WMM Model +

802.11e User Priority

Best Effort

Video

Background

UP 7

UP 5

UP 3

UP 2

UP 6

UP 4

UP 0

UP 1

AF21

EF

DSCP

DF

CS3

Wireless traffic is assigned to an EDCA / WMM AC based on the frame’s UP Value.

This model looks reasonable and desirable, but is it realistic?

Note: The Video AC

doesn’t necessarily

need to be used for

video traffic!


But It Doesn’t Always Work - Remember This Table?

• Consider the example of SIP signaling (CS3 = DSCP 24)

– 24 is not in the table!

• AP calculates the UP value from the 3 MSB of the DSCP value

– 24 = [011]000

– Therefore, using 011, UP = 3

• SIP Signaling gets assigned UP value of 3

60

Traffic Type DSCP 802.11e UP

Network Control

56 (CS7) 7

CAPWAP 48 (CS6) 7

Voice 46 (EF) 6

Interactive Video

34 (AF41) 5

Signaling 26 (AF31) 4

X-Data 18 (AF21) 3

Bulk Data 10 (AF11) 2

Best Effort 0 (BE) 0


Downstream: Surprising Mappings Occur!

• Thus, in the downstream direction, SIP signaling ends up in the same AC as Trans-Data and Best Effort

• The default mapping mechanism means only two queues get used

• This can negatively impact wireless performance

61

Transactional Data

Realtime

4-Class Strategic

Enterprise Model

Best Effort

Control

Voice

WMM Model +


Best Effort

Video

Background

UP 7

UP 5

UP 3

UP 2

UP 6

UP 4

UP 0

UP 1

AF21

EF

DSCP

DF

CS3


Upstream: UP Can Map To The Wrong DSCP

CAPWAP Encapsulated


WLAN Controller

AP

Ethernet Switch

11e UP DSCP Payload DSCP 802.1p DSCP Payload

AP

AP

802.11 DSCP Payload

UP 4 gets mapped to the

WRONG DSPC on the

CAPWAP Tunnel!

24

24

4 24 26

802.1Q Trunk

62


Problem is Easy to Fix in IOS-XE Use Table Maps To Mark the Correct DSCP and UP Values

63


WLC 5760

AP

Ethernet Switch AP

AP

802.1Q Trunk

WLC5760(config)# table-map RD-DSCP-TO-UP






WLC5760(config)# table-map NU-DSCP-TO-DSCP






Radio Downstream Network Upstream


AireOS Solution: Use Mutation On Access Switch

• Example: On upstream, mutate the incorrect DSCP signaling value back to CS3

– Must be applied to every switch port connected to an AP

64

C3750-X(config)# mls qos map dscp-mutation UPSTREAM-MUTATION 26 to 24

! Mutates the DSCP from AF31 back to CS3 to it is correct on the CAPWAP

tunnel header

C3750-X(config)# interface GigabitEthernet1/1/10

! The interface that connects to the AP

C3750-X(config-if)# mls qos trust dscp

! Configures the port to statically trust DSCP on ingress

C3750-X(config-if)# mls qos dscp-mutation UPSTREAM-MUTATION

! Attaches the Upstream DSCP mutation map to the interface on ingress


Through Manual Mutation Or Table Mapping, You Can Achieve The Desired Result:

65

Transactional Data

Realtime

4-Class Strategic

Enterprise Model

Best Effort

Control

Voice

WMM Model +


Best Effort

Video

Background

UP 7

UP 5

UP 3

UP 2

UP 6

UP 4

UP 0

UP 1

AF21

EF

DSCP

DF

CS3

Wrap-Up


Key Takeaways

67


Quality of Service Sessions at Cisco Live 2014

68

Session ID Start Time Title

TECRST-2501 Sunday, 08:00 Enterprise QoS Design Strategy

BRKRST-2509 Tuesday, 08:00 Mastering Data Center QoS

BRKRST-2514 Tuesday, 12:30 Application Optimization and Visibility for

Intelligent WAN (IWAN)

BRKRST-2512 Wednesday, 13:30 Validating QoS using Medianet Media

Awareness

BRKCRS-2501 Thursday, 8:00 AM and

2:30 PM

Campus QoS Design - Simplified


Participate In The “My Favorite Speaker” Contest

• Promote your favorite speaker through Twitter and you could win $200 of Cisco Press products (@CiscoPress)

• Send a tweet and include

– Your favorite speaker’s Twitter handle @MrRobbarto

– Two hashtags: #CLUS #MyFavoriteSpeaker

• You can submit an entry for more than one of your “favorite” speakers

• Don’t forget to follow @CiscoLive and @CiscoPress

• View the official rules at http://bit.ly/CLUSwin

Promote Your Favorite Speaker and You Could be a Winner

69

http://bit.ly/CLUSwin


Complete Your Online Session Evaluation

• Give us your feedback and you could win fabulous prizes. Winners announced daily.

• Complete your session evaluation through the Cisco Live mobile app or visit one of the interactive kiosks located throughout the convention center.

Don’t forget: Cisco Live sessions will be available for viewing on-demand after the event at CiscoLive.com/Online

70

https://www.ciscolive.com/online


Continue Your Education

• Demos in the Cisco Campus

• Walk-in Self-Paced Labs

• Table Topics

• Meet the Engineer 1:1 meetings

71

QoS Design and Deployment ford2zmdbbm9feqrf.cloudfront.net/2014/usa/pdf/BRKRST-2515.pdf · QoS Design and Deployment for Wireless LANs ... • End-to-End QoS Network Design, 2nd ...

Documents