QoS Design and Deployment for Wireless LAN

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2 QoS Design and Deployment for Wireless LAN Rob Barton, Principal Systems Engineer CCIE #6660, CCDE 2013::6 BRKRST-2515

3 Cisco Spark How Questions? Use Cisco Spark to chat with the speaker after the session 1. Find this session in the Cisco Live Mobile App 2. Click Join the Discussion 3. Install Spark or go directly to the space 4. Enter messages/questions in the space Cisco Spark spaces will be available until July 3, cs.co/ciscolivebot#brkrst-2515 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 3

4 Housekeeping Log into the Spark Room and ask Questions, post comments! Download the student reference guide lots of extra information beyond material covered in this class BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 4

5 Agenda Why a Challenging Environment? Wireless LAN QoS Building Blocks A Day in the Life... Controller QoS Configuration Techniques QoS Automation with APIC-EM

6 Why a Challenging Environment?

7 A Wi-Fi Dream Meets Reality (based on an actual customer story) ~ 120 ft A trusting Cisco customer moved to their first ever Wi-Fi only building (including voice and video) DISASTER! Wi-Fi was Terrible!! Investigation revealed all APs at max power (power level 1) Covering ~11,300 sq. ft. per AP (2,500 sq. ft. is recommended) They needed 4x as many APs! BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 7

8 Mobile Applications on Wi-Fi Wi-Fi is the primary network access method Mission-critical applications cannot fail Wi-Fi space has become congested BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 8

9 Why Wireless QoS For Real Time Applications QoS is like a chain It s only as strong as its weakest link The WLAN is one of the weakest links in enterprise QoS designs for three primary reasons: 1) Typical downshift in speed (and throughput) 2) Shift from full-duplex to half-duplex media 3) Shift from a dedicated media to a shared media 170 Mbps Half Duplex 1 Gbps Full Duplex Proper RF and QoS design is the only way to ensure real-time appshave acceptable QoE BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 9

10 Wireless LAN QoS Building Blocks

11 Comparing Wired and Wireless QoS Wired environments are Full-Duplex, Wireless is a Half-Duplex shared medium Half duplex environments are very susceptible to collisions Thus, wired QoS is mostly concerned with managing congestion problems (solved with queuing, etc.) Wireless QoS is focused on a much bigger problem... Reduce the probability of a collision for high priority traffic and get the frame successfully on to the medium BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 11

12 Wi-Fi Media Access is Contention-Based Listen & Wait Listen & Wait Sending Listen & Wait Listen & Wait Listen & Wait Listen & Wait BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 12

13 Carrier Sense Multiple Access / Collision Avoidance Wired Hubs use CSMA/CD (collision detection) A station must 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 has occurred networks use CSMA/CA (collision avoidance) Wireless networks have no way to detect that a collision even occurred! Uses a system of fixed and random wait timers to ensure everyone gets a chance to send Every frame must be acknowledged by the other side BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 13

14 Distributed Coordination Function (DCF) When ready to transmit, all stations must first wait the DCF Interframe space (DIFS) Allows all stations to sense end of frame Tx and allow ACK to be sent back Once DIFS has counted down to zero, a random backoff countdown timer (the Contention Window) is generated if the medium is not free. Initially, this value is between zero and a value known as CW min Once the CW counts down to zero, the frame is transmitted DIFS Contention Window Period (CW) Medium is Busy 2x slots (18 μs). Begin Transmission SIFS (16 μs) ACK is Sent Random Number of Time Slots Time (t) BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 14

15 What if Your Frame Doesn t Get Ack d? How do you know the transmission got through okay? The receiving station must send an acknowledgment. If the first attempt didn t work (no ACK received), double the previous CW size and pick a new random number. Keep doing this until the CW reaches a maximum size of 1023 slot times. How many times should the station keep trying? In Cisco APs, the maximum number of attempts is 64 before the frame is discarded. BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 15

16 What Happens When the Client Count Goes Up? Wait Wait Wait Wait Wait Wait Sending 11ac Wait Wait Wait BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 16

17 Does This Remind You of Anything? BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 17

18 Throughput (%) The Contention Breaking Point (802.11ac) (source: IEEE /0351r2) 120% 100% 80% 60% 40% 20% 0% 5% - 10% contention premium 10% - 30% 30% - 50% 50% - 60% Clients As more clients associate and transmit, WLAN contention increases for all clients, degrading performance for all BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 18

19 Why Don t we Just Make it Deterministic? Although a central scheduling algorithm was defined in e (Hybrid Controlled Channel Access - HCCA), this has never been adopted by the industry. BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 19

20 Simplified Consider an Example Example of Five Stations - DCF Trying In Action: to Unicast all at Once Station A Frame DIFS DIFS DIFS Station B Station C Station D Station E Defer Defer Defer Frame Defer Defer Defer Defer Frame Defer Frame Backoff time Backoff time remaining BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 20

21 802.11e Introduced the Enhanced Distributed Channel Access (EDCA) Model in e was tasked with bringing QoS to Wi-Fi EDCA was introduced by IEEE e in 2005, and has been adopted by the Wi-Fi Alliance as Wireless Multimedia (WMM) WMM is now a mandatory part of modern Wi-Fi a/b/g are based on DCF (no QoS) n/ac are based on EDCA (QoS is supported) Continual improvements, including the rollup BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 21

22 #1 Access Categories (ACs) When wireless frames are transmitted, a 3-bit QoS value known as the User Priority (UP) is written into the header Application Data UP Values: 1, 2 0, 3 4, 5 6, 7 Background Best Effort Video Voice BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 22

23 AireOS Default DSCP UP Mapping Table This is the Cisco recommended approach and is implemented in AireOS Note: There is no current standard for mapping, but is being pursued at IETF Traffic Type DSCP e UP / WMM Voice 46 (EF) 6 Voice Interactive Video 34 (AF41) 5 Video Access Category Call Signaling 24 (CS3) 3 Best Effort Transactional / Interactive Data 18 (AF21) 3 Best Effort Bulk Data 10 (AF11) 2 Background Best Effort 0 (BE) 0 Best Effort BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 23

24 IETF Draft on DSCP UP Mapping Reconciles RFC 4594 with IEEE e Summarizes consensus on DSCP-to-UP mapping Advocates DSCP-trust in the upstream direction (vs. UP-to- DSCP mapping) BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 24

25 #2 New Backoff Timers for the Access Category EDCA manages the ACs in the following way: Variable Arbitration Interframe Spacing (AIFS) Variable CW min and CW max values depending on traffic type Values shown are slot times 9μs per slot in EDCA / WMM AC AIFS Number CWmin CWmax Legacy DCF DIFS > 2 15* 1023 Voice Video Best Effort Background *For a/g b uses 31 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 25

26 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) Simply having a queue doesn t give you QoS how you manage the queue is what matters. BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 26

27 #3 Transmission Opportunity (TXOP) TXOP is a timer a station keeps sending until it s TXOP timer counts down to zero DCF had no such thing send one frame and then start again! Why is video smaller than the other TXOPs? EDCA / WMM AC TXOP (µs) TXOP (Units) Voice Video Best Effort Background BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 27

28 Real Time Voice vs. Real Time Video Traffic Profile Traffic Profile Helps Model TXOP Timers BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 28

29 #4 Transmission Specification (TSpec) TSpec is basically Call Admission Control - management of the number of voice and video traffic flows per AP radio Client signals to AP to request it s traffic stream be added to AP (ADDTS) TSpec includes data rate, packet size, number of stream & more ADDTS Request: Can I add a voice stream to this channel? I need 88 Kbps etc. ADDTS Response: Sorry, there s no room for this traffic! BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 29

30 Summary: Four Key e QoS Enhancements Enhanced Distributed Channel Access (EDCA): 1. Establishment of four Access Categories and 3-bit User Priority QoS field 2. New timers replacing legacy static DIFS and CW 3. Each AC get s its own Transmission Opportunity (TXOP) 4. Call Admission Control (CAC) with TSpec BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 30

31 Changing the Game With ax OFDM (Orthogonal Frequency Division Multiplexing) ac is based on OFDM works in the frequency and time domain The information is spread across multiple sub-carriers For a given time slot, all the sub-carriers are used for a single client BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 31

32 Changing the Game With ax OFDM (Orthogonal Frequency Division Multiple Access) In 80211ax the subcarriers are Resource Units (RUs) that can be assigned to different users Allows AP to send to multiple clients at the same time (more efficient) BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 32

33 802.11ax UL MU-MIMO ac allows for downlink MU-MIMO ax adds uplink MU-MIMO Challenge was about synchronization 1SS 1SS 4SS AP 1SS 1SS ax mandate chipsets with low clock drift AP checks which STAs can send together (and AP can tell on flow from the other) AP sends trigger frame STAs respond all at the same time AP Trigger frame STAs STAs STAs STAs BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 33

34 A Day in the Life...

35 Downstream QoS Model (Simplified) Note: DSCP trust model (dot1p CoS tagging on WLC not in use here) DSCP CAPWAP Encapsulated CAPWAP Encapsulated 802.1p DSCP DSCP Payload DSCP Payload 802.1p DSCP Payload 1 CAPWAP 802.1Q Trunk Wired Network 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. BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 35

36 Downstream QoS Model (Simplified) Note: DSCP trust model (dot1p CoS tagging on WLC not in use here) UP DSCP Payload DSCP 2 CAPWAP Encapsulated CAPWAP Encapsulated 802.1p DSCP DSCP Payload DSCP Payload 802.1p DSCP Payload 1 CAPWAP 802.1Q Trunk Wired Network 1 2 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. Once the Ethernet frame is received by the AP, it maps the DSCP value of the IP packet to the e UP value on the wireless frame. The frame is then sent to the client. BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 36

37 Upstream QoS Model (Simplified) Note: DSCP trust model (dot1p CoS tagging on WLC not in use here) 31 The client e frame is received by the AP. The AP maps the e UP value *or* original packet DSCP to the outer CAPWAP IP DSCP header (configurable) CAPWAP 802.1Q Trunk Wired Network UP DSCP Payload Trust UP DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP Payload 1 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 37

38 Upstream QoS Model (Simplified) Note: DSCP trust model (dot1p CoS tagging on WLC not in use here) The client e frame is received by the AP. The AP maps the e UP value *or* original packet DSCP to the outer CAPWAP IP DSCP header (configurable) At the WLC end of the CAPWAP tunnel, the e frame is bridged to the Ethernet switch and original DSCP value is used on emerging packet CAPWAP 802.1Q Trunk Wired Network UP DSCP Payload Trust UP DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP CAPWAP Encapsulated DSCP Payload p DSCP Payload 1 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 38

39 Upstream QoS Model (Simplified) Note: DSCP trust model (dot1p CoS tagging on WLC not in use here) 31 2 The client e frame is received by the AP. The AP maps the e UP value *or* original packet DSCP to the outer CAPWAP IP DSCP header (configurable) Allow preservation of the DSCP value from the client all the way through the network, emerging untouched from the WLC CAPWAP 802.1Q Trunk Wired Network UP DSCP Payload Trust DSCP DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP Payload 2 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 39

40 Controller QoS Configuration Techniques

41 1) Set Wireless Controller Configuration: Formula for a Successful QoS Deployment 1) Configure the QoS Map function 2) Configure the QoS Profiles 3) Configure AVC for the appropriate protocols 4) Tune EDCA Parameters as necessary 5) CAC / TSpec Configuration 6) Configure Flex Connect APs for QoS 7) Inter-Controller and Mobility Anchor QoS Not discussed in this breakout BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 41

42 Pillar 1: The QoS Map Function Set Controller to trust the original packet s DSCP value, not the incoming e UP value CAPWAP 802.1Q Trunk Wired Network UP DSCP Payload DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP Payload BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 42

43 Microsoft Packet Capture In Upstream Direction In MS Windows, the WMM UP is derived from the 3 msb of the DSCP value DSCP ef (46) = [ ] 101 = UP 5 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 43

44 A Consistent QoS Strategy: Unifying Wired and Wireless QoS By definition of IEEE e standard there are only 4 levels of service (Access Categories) The class-based QoS model should align with the four AC model in the wireless network Need to make sure the QoS markings are consistent end-to-end through the network and the design is consistent Enterprise QoS Class 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7 Class n PQ + CBWFQ WLAN QoS Voice Video Best Effort Background EDCA Algorithm BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 44

45 Trust DSCP Upstream on the AP; do not map from UP to DSCP on the CAPWAP header Configure QoS map to trust DSCP BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 45

46 Trust DSCP Solves the Windows Problem (mostly) CAPWAP 802.1Q Trunk 802.1Q Trunk Wired Network 5 UP DSCP Payload CAPWAP Encapsulated CAPWAP Encapsulated DSCP 802.1p DSCP 802.1p DSCP DSCP Payload DSCP Payload Payload Video-Quality QoS (handled by the Video AC) Voice-Quality QoS BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 46

47 Pillar 2: Configure the QoS Profiles X DSCP 10 DSCP 34 DSCP 46 DSCP 0 The main purpose of the QoS profile is to limit the maximum DSCP allowed on a CAPWAP tunnel, and thus limit the UP value QoS profiles may be used and applied to each WLAN (SSID) Recommendation: For enterprise class, mixed-use WLANs, use the Platinum profile, for hotspots, use Silver or Bronze BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 47

48 Example: Effect of Gold Profile Note: DSCP trust model (dot1p CoS tagging on WLC not in use here) UP DSCP Payload DSCP CAPWAP Encapsulated DSCP Payload p DSCP 34 CAPWAP Encapsulated DSCP Payload p DSCP Payload 46 CAPWAP 802.1Q Trunk Wired Network 6 UP DSCP Payload 46 DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP CAPWAP Encapsulated DSCP Payload 802.1p DSCP Payload BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 48

49 Details of the QoS Profile Page Create default bandwidth contracts for each user or each SSID Not necessary in most enterprise deployments BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 49

50 Details of the QoS Profile Page Priority Voice Video Best Effort Background Max DSCP Value 46 (EF) 34 (AF41) 0 (CS0) 10 (AF11) Set the maximum priority for clients Sets the maximum for non-wmm traffic (frames without an 11e UP value) BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 50

51 The Problem of non-wmm Clients CAPWAP 802.1Q Trunk Wired Network X UP DSCP Payload 0 46 DSCP CAPWAP Encapsulated CAPWAP Encapsulated 802.1p DSCP DSCP Payload DSCP Payload p DSCP Payload 5 46 The Client is Not WMM capable, but AP automatically maps the CAPWAP DSCP to EF (46) If LAN switch is set to trust CoS, BitTorrent becomes DSCP EF BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 51

52 Details of the QoS Profile Page Do not use this. Trust DSCP end-toend is the recommended approach CoS-based Trust limits you to 8 classes This is no longer used to enforce maximum values of the trunk or CAPWAP DSCP Leave Protocol Type = none BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 52

53 Apply the QoS Profile to the WLAN Choose the QoS profile you want to apply for this WLAN Sets the ceiling on all traffic to DSCP 46 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 53

54 Pillar 3: Application Visibility & Control (AVC) Deep Packet Inspection in the wireless controller allows application identification, remarking, rate limiting, and dropping of unwanted traffic Leverages the IOS NBAR2 Engine AVC In The Wireless LAN Controller 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 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 54

55 Key Points To Know About AVC AVC Modifies the inner DSCP value, thus influencing the CAPWAP DSCP and wireless UP values AVC Policy functions here in centralized mode Client CAPWAP Tunnels Ethernet Switch AP WLC In AireOS 8.0, AVC can be applied in a specific direction (upstream or downstream) BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 55

56 AVC Application Groups 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 AVC Signatures available today Note: only 32 applications can be added to a single profile BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 56

57 Choose the Application You Want to Control From the Application Group, select the application you want to control BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 57

58 AVC Functions AVC has three basic control capabilities: 1. Modify the inner packet s DSCP to a custom value 2. Drop the packet 3. Rate Limit (average / burst) BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 58

59 AVC Configuration Example: AVC can be applied in upstream, downstream, or both directions AVC can drop unwanted traffic AVC has ability to police applications bi-directionally BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 59

60 AVC Example Cont d: Apply The AVC Policy 1. Enable AVC 2. Select the Policy you just configured BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 60

61 AVC Provides Application Visibility BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 61

62 QoS Automation Through APIC-EM

63 There is a lot to Configure! 1) Configure the QoS Map function 2) Configure the Platinum profile for QoS 3) Configure AVC for the appropriate protocols 4) Tune EDCA Parameters as necessary 5) Enabling and Tuning CAC (TSpec) 6) Device and User Identity QoS and Bandwidth Contracts 7) QoS for FlexConnect APs 8) Inter-Controller (Mobility Anchor) QoS 9) Apple FastLane Integration BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 63

64 AireOS QoS Configs can get Complicated! (Cisco Controller) > config a Qos Mode 1 (Cisco Controller) > config b Qos Mode 1! Apply WMM EDCA profile (best of current EDCA profiles) for a/b (Cisco Controller) > config a cac voice acm enable (Cisco Controller) > config b cac voice acm enable! Enable ACM for a/b (Cisco Controller) > config a cac voice max-bandwidth 50 (Cisco Controller) > config b cac voice max-bandwidth 50! Limit voice traffic to 50% of total bandwidth for a/b (Cisco Controller) > config a cac voice roam-bandwidth 6 (Cisco Controller) > config b cac voice roam-bandwidth 6! Keep 6% bandwidth for roaming users for a/b (Cisco Controller) > config a exp-bwreq (Cisco Controller) > config b exp-bwreq! Enable Expedited Bandwidth for a/b enable enable BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 64

65 And More Complicated! (Cisco Controller) > config qos priority platinum voice besteffort besteffort! Set QoS Profile to Platinum! Set default marking to unmarked unicast and multicast traffic to best effort (Cisco Controller) > config qos protocol-type platinum none! Disables 802.1p marking (all wired marking is DSCP-based) (Cisco Controller) > config qos burst-realtime-rate platinum per-ssid downstream 0! Do not restrict profile bandwidth for UDP traffic (Cisco Controller) > config qos average-realtime-rate platinum per-ssid downstream 0! Do not restrict profile bandwidth for TCP traffic BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 65

66 QoS Maps Even More Complicated! Step 1: Disable the Current QoS Map (Cisco WLC) > config qos qosmap disable Step 2: Configure the UP-to-DSCP Maps (Cisco WLC) > config qos qosmap up-to-dscp-map (Cisco WLC) > config qos qosmap up-to-dscp-map (Cisco WLC) > config qos qosmap up-to-dscp-map (Cisco WLC) > config qos qosmap up-to-dscp-map (Cisco WLC) > config qos qosmap up-to-dscp-map (Cisco WLC) > config qos qosmap up-to-dscp-map (Cisco WLC) > config qos qosmap up-to-dscp-map (Cisco WLC) > config qos qosmap up-to-dscp-map BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 66

67 And We Haven t Even Started AVC yet!!! Step 3: Configure DSCP-to-UP Mapping Exceptions (Cisco Controller) > config qos qosmap dscp-to-up-exception 56 0 (Cisco Controller) > config qos qosmap dscp-to-up-exception 48 0 (Cisco Controller) > config qos qosmap dscp-to-up-exception 46 6 (Cisco Controller) > config qos qosmap dscp-to-up-exception 44 6 (Cisco Controller) > config qos qosmap dscp-to-up-exception 40 5 (Cisco Controller) > config qos qosmap dscp-to-up-exception 38 4 (Cisco Controller) > config qos qosmap dscp-to-up-exception 36 4 (Cisco Controller) > config qos qosmap dscp-to-up-exception 34 4 (Cisco Controller) > config qos qosmap dscp-to-up-exception 32 5 (Cisco Controller) > config qos qosmap dscp-to-up-exception 30 4 (Cisco Controller) > config qos qosmap dscp-to-up-exception 28 4 (Cisco Controller) > config qos qosmap dscp-to-up-exception 26 4 (Cisco Controller) > config qos qosmap dscp-to-up-exception 24 4 (Cisco Controller) > config qos qosmap dscp-to-up-exception 22 3 (Cisco Controller) > config qos qosmap dscp-to-up-exception 20 3 (Cisco Controller) > config qos qosmap dscp-to-up-exception 18 3 (Cisco Controller) > config qos qosmap dscp-to-up-exception 16 0 (Cisco Controller) > config qos qosmap dscp-to-up-exception 14 2 (Cisco Controller) > config qos qosmap dscp-to-up-exception 12 2 (Cisco Controller) > config qos qosmap dscp-to-up-exception 10 2 (Cisco Controller) > config qos qosmap dscp-to-up-exception 8 1 BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 67

68 APIC-EM QoS Automation - Easy QoS Network Operators express high-level business-intent to APIC-EM EasyQoS EM Southbound APIs translate businessintent to platform-specific configurations as they are needed BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 68

69 APIC-EM EasyQoS Demo

70 Summary WLANs are often considered the most challenging place in the network to manage, especially QoS An understanding of how EDCA works is critical to troubleshooting wireless quality issues and managing your WLAN Enterprise-quality voice and video are possible over wireless, but best practices must be followed Apply best practices of the three pillars: QoS Maps, Platinum Profile, AVC Check out APIC-EM EasyQoS! BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 70

71 Complete Your Online Session Evaluation Give us your feedback to be entered into a Daily Survey Drawing. A daily winner will receive a $750 gift card. Complete your session surveys through the Cisco Live mobile app or on Don t forget: Cisco Live sessions will be available for viewing on demand after the event at Cisco and/or its affiliates. All rights reserved. Cisco Public

72 Continue Your Education Demos in the Cisco campus Walk-in Self-Paced Labs Lunch & Learn Meet the Engineer 1:1 meetings Related sessions: BRKEWN-2003 Optimize your WLAN for iphones (Wednesday) BRKEWN-2032 DNA Assurance: Bring Intelligence to your WLAN Issues (90 min ago) CTHCRS-1840 DNA Assurance for the Enterprise (Wednesday) 9-Hour Cisco Press Video Course on RT Over Wireless (pre-order - Sept 1st) BRKRST Cisco and/or its affiliates. All rights reserved. Cisco Public 72

73 Thank you

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