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Campus QoS DesignSimplified BRKCRS-2501

Tim Szigeti, CCIE#9794

Senior Technical Leader

2013 Cisco and/or its affiliates. All rights reserved. BRKCRS-2501 Cisco Public

Agenda

QoS Design Strategy Review

Campus QoS Design Considerations & Recommendations

Cisco Catalyst 2960/3560/3750 QoS Design

Cisco Catalyst 3850 QoS Design



Summary and References

Appendix: AutoQoS for Medianet

3


Session Abstract

This session discusses strategic factors driving network QoS designs, including: new applications and business requirements, new industry guidance and best practices and new platforms and technologies

Cisco QoS strategy for rich media networks will be presented and campus-specific design considerations will be discussed.

Then platform-specific designs for classification, policing and ingress & egress queuing policies will be detailed for the:

Cisco Catalyst 2960/3560/3750 G/E/X series switches

Cisco Catalyst 3850 series switches (wired-only)

Cisco Catalyst 4500 (Supervisor 7-E) and 4500-X series switches

Cisco Catalyst 6500 (Supervisor 2T) series switches

4



By 2016

Global IP traffic will increase 3-fold Even after having increased 8-fold in the past 5 years

The number of IP devices will be more than triple the global population

Wireless traffic will exceed wired by 2014 and will be over 60% by 2016

Non-PC traffic (smartphones, tablets etc.) will account for 31% of all traffic

86% of consumer internet traffic will be video

Macro Trends in Internet Usage

5

http://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/white_paper_c11-481360.pdf

http://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/white_paper_c11-481360.pdfhttp://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/white_paper_c11-481360.pdfhttp://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/white_paper_c11-481360.pdf


QoS Design Strategy Review Trends in Voice, Video and Data Media Applications

Data

Connectivity

Web Email

Messaging

Convergence

Leveraging Investment

Data Apps

App Sharing Web/Internet Messaging Email

Voice

IP Telephony

Video

IP Video Conf

Media Explosion

Co-Existence

Data Apps

App Sharing Web/Internet Messaging Email

Voice

IP Telephony HD Audio Softphone Other VoIP

Video

IP Video Conf Surveillance Video Telephony HD Video Conf VoD Streaming

Unmanaged

Internet Streaming Internet VoIP YouTube MySpace Other

Collaborative Media

Experience Assurance

Ad

-Ho

c A

pp

Tele

Pre

sen

ce

Web

Ex

6


QoS Design Strategy Review RFC 4594-Based Strategic QoS Recommendations

Application

Class

Per-Hop

Behavior

Admission

Control

Queuing &

Dropping

Application

Examples

VoIP Telephony EF Required Priority Queue (PQ) Cisco IP Phones (G.711, G.729)

Broadcast Video CS5 Required (Optional) PQ Cisco IP Video Surveillance / Cisco Enterprise TV

Realtime Interactive CS4 Required (Optional) PQ Cisco TelePresence

Multimedia Conferencing AF4 Required BW Queue + DSCP WRED Cisco Unified Personal Communicator, WebEx

Multimedia Streaming AF3 Recommended BW Queue + DSCP WRED Cisco Digital Media System (VoDs)

Network Control CS6 BW Queue EIGRP, OSPF, BGP, HSRP, IKE

Signaling CS3 BW Queue SCCP, SIP, H.323

Ops / Admin / Mgmt (OAM) CS2 BW Queue SNMP, SSH, Syslog

Transactional Data AF2 BW Queue + DSCP WRED ERP Apps, CRM Apps, Database Apps

Bulk Data AF1 BW Queue + DSCP WRED E-mail, FTP, Backup Apps, Content Distribution

Best Effort DF Default Queue + RED Default Class

Scavenger CS1 Min BW Queue (Deferential) YouTube, iTunes, BitTorent, Xbox Live

7


QoS Design Strategy Review Business Requirements Will Continue to Evolve and Expand over Time

Time

Critical Data

Realtime

4-Class Model

Best Effort

Signaling / Control Call Signaling

Critical Data

Interactive Video

Voice

8-Class Model

Scavenger

Best Effort

Streaming Video

Network Control

Network Management

Realtime Interactive

Transactional Data

Multimedia Conferencing

Voice

12-Class Model

Bulk Data

Scavenger

Best Effort

Multimedia Streaming

Network Control

Broadcast Video

Call Signaling

8


http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qosmrn.pdf

QoS Design StrategyAt-A-Glance

9

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qosmrn.pdfhttp://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qosmrn.pdf

Campus QoS Design: Considerations & Recommendations


Agenda









11


Campus QoS Design Considerations

The primary role of QoS in medianet campus networks is not to control latency or jitter (as it is in the WAN/VPN), but to manage packet loss.

In GE/10GE campus networks, it takes only a few milliseconds of congestion to cause instantaneous buffer overruns resulting in packet drops.

Rich media applicationsparticularly HD video applicationsare extremely sensitive to packet drops, to the point where even 1 packet dropped in 10,000 is discernable by the end-user.

The Case for Campus QoS

12


10

80

lin

es o

f H

orizo

nta

l

Reso

lution

1920 lines of Vertical Resolution (Widescreen Aspect Ratio is 16:9) 1080 x 1920 lines =

2,073,600 pixels per frame

x 3 colors per pixel

x 1 Byte (8 bits) per color

x 30 frames per second

= 1,492,992,000 bps

or 1.5 Gbps Uncompressed

Cisco H.264-based HD Codecs transmit 3-5 Mbps per 1080p image

which represents over 99.67% compression (300:1)

Therefore packet loss is proportionally magnified in overall video quality

Users can notice a single packet lost in 10,000Making HD Video

One Hundred Times More Sensitive to Packet Loss than VoIP!

Campus QoS Design Considerations Implications of Video Compression on Packet Loss Tolerance

13

2013 Cisco and/or its affiliates. All rights reserved. BRKCRS-2501 Cisco Public 20 msec

Voice Packets

Bytes

200

600

1000

Audio

Samples

1400

Time

200

600

1000

1400

33 msec

Video Packets Video

Frame

Video

Frame

Video

Frame

Campus QoS Design Overview VoIP vs. HD VideoAt the Packet Level

14


0

20

40

60

80

100

120

140

10

50

90

13

0

17

0

21

0

25

0

29

0

33

0

37

0

41

0

45

0

49

0

53

0

57

0

61

0

65

0

69

0

73

0

77

0

81

0

85

0

89

0

93

0

97

0

KB

yte

s P

er

ms Gbps Line Rate

Campus QoS Design Considerations How Long Can Queue-Buffers Accommodate Line-Rate Bursts?

Gbps Linecard Example (WS-X6148A-GE-TX)

Gbps Line Rate: 1 Gbps = 125 MB/s

or 125 KB/ms

Total Per-Port Buffer: 5.4 MB

Total Per-Queue Buffer*: 1.35 MB

Total Per-Queue Buffering Capacity: 10.8 ms

*Assuming (4) equal-sized queues

ms

GE Linecard Example (WS-X6148)

15


KB

yte

s P

er

ms 10 Gbps Line Rate

Campus QoS Design Considerations How Long Can Queue-Buffers Accommodate Line-Rate Bursts?

Gbps Linecard Example (WS-X6148A-GE-TX)

Gbps Line Rate: 10 Gbps = 1.25 GB/s

or 1250 KB/ms

Total Per-Port Buffer: 90 MB

Total Per-Queue Buffer*: 11.25 MB

Total Per-Queue Buffering Capacity: 9.0 ms

*Assuming (8) equal-sized queues

ms

0

200

400

600

800

1000

1200

1400

10

50

90

13

0

17

0

21

0

25

0

29

0

33

0

37

0

41

0

45

0

49

0

53

0

57

0

61

0

65

0

69

0

73

0

77

0

81

0

85

0

89

0

93

0

97

0

10 GE Linecard Example (WS-X6904)

16



Always perform QoS in hardware rather than software when a choice exists

Classify and mark applications as close to their sources as technically and administratively feasible

Police unwanted traffic flows as close to their sources as possible

Enable queuing policies at every node where the potential for congestion exists

Strategic QoS Design Principles

17



MLS QoS vs. MQC QoS vs. C3PL QoS

Global Default QoS Setting

Trust States and Conditional Trust

Per-Port QoS, Per-VLAN QoS, Per-Port/Per-VLAN QoS

Ingress QoS Models

Egress QoS Models

EtherChannel QoS

QoS Roles in a Medianet Campus

Campus QoS Tools and Options

18



Catalyst 2960 / 3650 / 3750 are the last platforms to use Multilayer Switch QoS (MLS QoS) syntax QoS is disabled by default and must be globally enabled with mls qos command

Once enabled, all ports are set to an untrusted port-state

Catalyst 3850 and 4500 are using IOS MQC QoS (like router platforms) QoS is enabled by default

All ports trust at layer 2 and layer 3 by default

Catalyst 6500 is using Cisco Common Classification Policy Language (C3PL) QoS QoS is enabled by default (Sup2T) Disabled by default (Sup720)

All ports trust at layer 2 and layer 3 by default

C3PL presents queuing policies similar to MQC

MLS QoS vs. MQC QoS vs. C3PL QoS

19


Campus QoS Design Considerations Trust States and Operations

CoS = 5

DSCP = 46

CoS = 5

DSCP = 46

Trust CoS [mls] qos trust

cos

CoS = 5

DSCP = 46

Trust DSCP [mls] qos trust dscp

Untrusted no [mls] qos trust

Internal

DSCP = 0

CoS = 0

DSCP = 0

Internal

DSCP = 40

CoS = 5

DSCP = 40

Internal

DSCP = 46

CoS = 5

DSCP = 46

CoS-to-DSCP Mapping Table

CoS 0 0 CoS 4 32

CoS 1 8 CoS 5 40

CoS 2 16 CoS 6 48

CoS 3 24 CoS 7 56

mls qos map cos-dscp 0 8 16 24 32 40 48 56

20


Campus QoS Design Considerations Conditional Trust Operation

Cisco TelePresence System (CTS) Endpoint Example

3 CTS Primary Codec: Voice + Video CoS 4 & DSCP CS4

Call-Signaling CoS 3 & DSCP CS3

CoS-to-DSCP Map:

CoS 5 DSCP EF (46)

CoS 4 DSCP CS4 (32)

CoS 3 DSCP CS3 (24)

4

Trust is Dynamically Extended to Cisco CTS Primary Codec

Successful Condition Met (i.e. CDP negotiation successful)

1

Cisco 7975G IP Phone: Voice CoS 5 & DSCP EF

Signaling CoS 3 & DSCP CS3

2

Trust Boundary

21


Campus QoS Design Considerations Trust Boundaries

Access-Edge Switches

Conditionally Trusted Endpoints

Example: IP Phone + PC mls qos trust device cisco-phone

Secure Endpoint

Example: Software-protected PC

With centrally-administered QoS markings mls qos trust dscp

Unsecure Endpoint no mls qos trust

Tru

st

Bo

un

da

ry

Tru

st

Bo

un

da

ry

22


Campus QoS Design Considerations Per-Port QoS vs. Per-VLAN QoS

Policy map is applied to the

physical switch port

VLAN 10 VLAN 20

Physical Ports

VLAN Interfaces

Policy map is applied to the

logical VLAN interface

Per-Port QoS Per-VLAN QoS

VLAN 10 VLAN 20

Physical Ports

VLAN Interfaces

23


DVLAN 10

DVLAN policy map is applied

to the Data VLAN (only)

on a given trunked switch port

VVLAN 110

Trunked Physical Ports

VLAN Interfaces

VVLAN policy map is applied

to the Voice VLAN (only)

on a given trunked switch port

Campus QoS Design Considerations Per-Port/Per-VLAN QoS

24

25

Campus Ingress QoS Models

Trust CoS

Trust Device / Conditional Trust

No Trust (Untrusted)

Ing

res

s Q

ue

uin

g P

olic

ies

(if

req

uir

ed

an

d s

up

po

rted

)

(Optional) Policing Policies

VoIP Policer (


Campus QoS Design Recommendations

Catalyst Queuing is done in hardware and varies by platform/linecard and can be expressed as: xPyQzT

For Example: 1P3Q8T means: 1 PQ

3 non-priority queues, each with

8 drop-thresholds per queue

Minimum queuing capabilities for medianet is 1P3QyT

Realtime (PQ) should be no more than 33% of link

Best-Effort Queue should be guaranteed at 25% of link

Scavenger/Bulk queue should be minimally provisioned

Enable congestion-avoidance on non-priority queues (WRED, WTD, DBL)

Queuing and Dropping Recommendations

Realtime

33%

Guaranteed BW

Scavenger/Bulk

5%

Best Effort

25%

26


Campus QoS Design Recommendations

EtherChannels are comprised of logical (Port-Channel) interfaces and physical (port-member) interfaces

Ingress QoS policies are sometimes applied to the logical interfaces

but not always

Egress QoS policies (such as queuing) are always applied to the physical port-member interfaces

EtherChannel QoS

Platform QoS Policies Applied to the

(Logical) Port-Channel

Interface

QoS Policies Applied to the

(Physical) Port-Member

Interfaces

Catalyst 2960/3560/3750 Ingress & Egress

Catalyst 3850 Ingress Egress



27


Core Distribution Access

Untrusted Endpoints

Trusted

Endpoints

Conditionally-

Trusted

Endpoints

Switch-to-Switch/Router Port QoS

Trust DSCP

1P3QyT or 1P7QyT Queuing

WAN/VPN

Block

Untrusted Endpoint Port QoS:

No Trust

[Optional Ingress Marking and/or Policing]

1P3QyT Queuing

Trusted Endpoint

Port QoS:

Trust-DSCP

[Optional Ingress

Marking and/or

Policing]

1P3QyT Queuing

Conditionally-Trusted Endpoint Port QoS

Conditional-Trust with Trust-CoS

[Optional Ingress Marking and/or Policing]

1P3QyT Queuing

Campus QoS Design Port QoS Roles

28


http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampusaag.pdf

Campus QoS DesignAt-A-Glance

29

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampusaag.pdf


Agenda









31


Catalyst 2960/3560/3750 Campus QoS Design Catalyst 2960/3650/3750 QoS Roles in Campus Networks

No Trust +

Ingress Queuing +

Egress Queuing

Trust DSCP +

Ingress Queuing +

Egress Queuing

Conditional Trust +

Ingress Queuing +

Egress Queuing

Classification/Marking +

[Optional Policing] +

Ingress Queuing +

Egress Queuing

Distribution

Switches

C2960/

C3560/

C3750

Access

Switch

32


Catalyst 2960/3560/3750 Campus QoS Design

1. Enable QoS

2. Configure Ingress QoS Model(s):

Trust Models

Conditional Trust Model

Service Policy Models

3. Configure Ingress Queuing

4. Configure Egress Queuing

QoS Design Steps

33


mls qos trust device cisco-phone [or]

mls qos trust device cts [or]

mls qos trust device ip-camera [or]

mls qos trust device media-player

Catalyst 2960/3560/3750 Campus QoS Design Enabling QoS and Trust Model Examples

mls qos

Enabling QoS:

mls qos trust dscp

Trust-DSCP Model Example:

Conditional-Trust Model Example:

Shaded commands are global

Highlighted commands are interface specific mls qos trust cos

Trust-CoS Model Example: mls qos map cos-dscp 0 8 16 24 32 46 48 56

34


mls qos trust device cisco-phone

mls qos trust cos

Catalyst 2960/3560/3750 Campus QoS Design Conditional Trust to a Cisco IP Phone Example

Conditional Trust Policy to a Cisco IP Phone: mls qos map cos-dscp 0 8 16 24 32 46 48 56

35


[class-maps omitted for brevity]

policy-map MARKING-POLICY

class VOIP

set dscp ef

class MULTIMEDIA-CONFERENCING

set dscp af41

class SIGNALING

set dscp cs3

class TRANSACTIONAL-DATA

set dscp af21

class BULK-DATA

set dscp af11

class SCAVENGER

set dscp cs1

class DEFAULT

set dscp default

Catalyst 2960/3560/3750 Campus QoS Design Service Policy Model ExampleMarking Policy

service-policy input MARKING-POLICY

Note: While the Catalyst 3750-E MQC syntax

includes an implicit class-default, any policy

actions assigned to this class are not enforced.

Therefore, an explicit class DEFAULT is

configured in to enforce a marking policy to

DSCP 0 for all other IP traffic.

36


mls qos map policed-dscp 0 10 18 to 8


policy-map MARKING&POLICING

class VVLAN-VOIP

set dscp ef

police 128k 8000 exceed-action drop

class VVLAN-SIGNALING

set dscp cs3



set dscp af41

police 5m 8000 exceed-action drop

class SIGNALING

set dscp cs3



set dscp af21

police 10m 8000 exceed-action policed-dscp-transmit

Catalyst 2960/3560/3750 Campus QoS Design Service Policy Model ExampleMarking & Policing Policy

service-policy input MARKING&POLICING

(continued)

class BULK-DATA

set dscp af11


class SCAVENGER

set dscp cs1

police 10m 8000 exceed-action drop

class DEFAULT

set dscp default


Note: Remarking is performed by configuring a

policed-DSCP map with the global configuration

command mls qos map policed-dscp, which

specifies which DSCP values are subject to

remarking if out-of-profile and what value these

should be remarked as.

In this example exceeding data classes are

remarked to Scavenger (CS1/DSCP 8).

37


mls qos vlan-based

Catalyst 2960/3560/3750 Campus QoS Design Per-VLAN QoS Design

Interface [range] GigabitEthernet:

service-policy input MARKING

Interface VLAN:

38


Catalyst 2960/3560/3750 Campus QoS Design Ingress Queuing Model (1P1Q3T)

1P1Q3T

Q2

Priority Queue

CS6

CS7

EF

CS4

Queue 1

Non-Priority

Default Queue

Network Management

Signaling


Transactional Data


Bulk Data

AF2

CS3

CS4

AF4

CS2

AF1

Scavenger CS1

Best Effort DF

Multimedia Streaming AF3

Broadcast Video

VoIP

Application

CS5

EF

Internetwork Control CS6

DSCP

Network Control (CS7)

CS5

Q1T3

Q1T2

Q1T1

CS3

CS2

CS6

CS7

DF

AF1

CS1

AF4

AF3

AF2

39


! This section configures the ingress queues and thresholds

mls qos srr-queue input priority-queue 2 bandwidth 30

mls qos srr-queue input bandwidth 70 30

mls qos srr-queue input buffers 90 10

mls qos srr-queue input threshold 1 80 90

! This section configures the ingress CoS-to-Queue mappings

mls qos srr-queue input cos-map queue 1 threshold 1 0 1 2

mls qos srr-queue input cos-map queue 1 threshold 2 3

mls qos srr-queue input cos-map queue 1 threshold 3 6 7


! This section configures ingress DSCP-to-Queue Mappings

mls qos srr-queue input dscp-map queue 1 threshold 1 0 8 10 12 14

mls qos srr-queue input dscp-map queue 1 threshold 1 16 18 20 22

mls qos srr-queue input dscp-map queue 1 threshold 1 26 28 30 34 36 38

mls qos srr-queue input dscp-map queue 1 threshold 2 24

mls qos srr-queue input dscp-map queue 1 threshold 3 48 56

mls qos srr-queue input dscp-map queue 2 threshold 3 32 40 46

Catalyst 2960/3560/3750 Campus QoS Design Ingress Queuing Model (1P1Q3T) Example

40


Catalyst 2960/3560/3750 Campus QoS Design Egress Queuing Model (1P3Q3T)

Network Management

Signaling


Transactional Data


Bulk Data

AF2

CS3

CS4

AF4

CS2

AF1

Scavenger CS1

Best Effort DF


Broadcast Video

VoIP

Application

CS5

EF


DSCP


Q1

Priority Queue

Queue 4

(5%)

Queue 2

(30%)

Default Queue

Queue 3 (35%)

Q2T3

Q2T2

Q4T2

Q4T1

Q2T1

CS6

CS7

EF

CS4

CS3

CS2

DF

CS1

AF1

AF4

AF3

AF2

1P3Q3T

CS5

41


! This section configures egress buffers and thresholds

mls qos queue-set output 1 buffers 15 30 35 20

mls qos queue-set output 1 threshold 1 100 100 100 100




! This section configures egress CoS-to-Queue mappings

mls qos srr-queue output cos-map queue 1 threshold 3 4 5

mls qos srr-queue output cos-map queue 2 threshold 1 2





Catalyst 2960/3560/3750 Campus QoS Design Egress Queuing Model (1P3Q3T) ExamplePart 1 of 2

42


Catalyst 2960/3560/3750 Campus QoS Design Egress Queuing Model (1P3Q3T) ExamplePart 2 of 2

! This section configures egress DSCP-to-Queue mappings

mls qos srr-queue output dscp-map queue 1 threshold 3 32 40 46

mls qos srr-queue output dscp-map queue 2 threshold 1 16 18 20 22

mls qos srr-queue output dscp-map queue 2 threshold 1 26 28 30 34 36 38

mls qos srr-queue output dscp-map queue 2 threshold 2 24

mls qos srr-queue output dscp-map queue 2 threshold 3 48 56




! This section configures interface egress queuing parameters

queue-set 1

srr-queue bandwidth share 1 30 35 5

priority-queue out

43




Interface



Interfaces

Catalyst 2960/3560/3750 Ingress & Egress

All QoS policies are configured on the physical port-member interfaces only

Catalyst 2960/3560/3750 Campus QoS Design EtherChannel QoS Design

44


http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat3xxxaag.pdf

Catalyst 2960/3560/3750 QoS DesignAt-A-Glance

45

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat3xxxaag.pdf

Cisco Catalyst 3850 (Wired) QoS Design


Agenda










Catalyst 3850 Campus QoS Design Catalyst 3850 QoS Roles in Campus Networks

No Trust +

Ingress Queuing +

Egress Queuing

Trust DSCP +

Ingress Queuing +

Egress Queuing

Conditional Trust +

Ingress Queuing +

Egress Queuing

Classification/Marking +

[Optional Policing] +

Ingress Queuing +

Egress Queuing

Distribution

Switches

C3850

Access

Switch

48


Catalyst 3850 Campus QoS Design


DSCP-Trust Model*

Conditional Trust Models



QoS Design Steps

*Catalyst 3850 IOS MQC will trust DSCP by default

(therefore no explicit policy is required for DSCP trust)

49


! This section applies conditional trust

! and the policy-map to the interface(s)

trust device cisco-phone

service-policy input CISCO-IPPHONE

Catalyst 3850 Campus QoS Design Conditional Trust Models

! This section defines the class-maps

! to match Voice and Signaling

class-map match-all VOICE

match cos 5

class-map match-all SIGNALING

match cos 3

! This section defines the CoS-to-DSCP

! remarking policy-map

policy-map CISCO-IPPHONE

class VOICE

set dscp ef

class SIGNALING

set dscp cs3

class class-default

set dscp default

trust device cisco-phone [or]

trust device cts [or]

trust device ip-camera [or]

trust device media-player

Conditional-Trust Models:

Cisco IP Phone Conditional Trust Example

50




class VOIP

set dscp ef


set dscp af41

class SIGNALING

set dscp cs3


set dscp af21

class BULK-DATA

set dscp af11

class SCAVENGER

set dscp cs1

class DEFAULT

set dscp default

Catalyst 3850 Campus QoS Design Service Policy Model Example Marking Policy


51



class VVLAN-VOIP

set dscp ef

police 128k burst ?

conform-action transmit

exceed-action drop


set dscp cs3

police 32k


exceed-action drop


set dscp af41

police 5m


exceed-action drop

class SIGNALING

set dscp cs3

police 32k


exceed-action drop

[continued]

Catalyst 3850 Campus QoS Design Service Policy Model Example Marking & Policing Policy

[continued]


set dscp af21

police 10m


exceed-action TABLE-MAP

class BULK-DATA

set dscp af11

police 10m



class SCAVENGER

set dscp cs1

police 10m


exceed-action drop

class class-default

set dscp default

police 10m



service-policy input MARKING&POLICING

http://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/qos/configuration_guide/b_mqc_qos_32se_3850_chapter_010.html#reference_BC97692D1F1E4F8A8A335878B5F612D0

Reference table-map

construct from IOS

52

http://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/qos/configuration_guide/b_mqc_qos_32se_3850_chapter_010.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/qos/configuration_guide/b_mqc_qos_32se_3850_chapter_010.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/qos/configuration_guide/b_mqc_qos_32se_3850_chapter_010.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/qos/configuration_guide/b_mqc_qos_32se_3850_chapter_010.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/qos/configuration_guide/b_mqc_qos_32se_3850_chapter_010.html


service-policy input VLAN-POLICERS

Catalyst 3850 Campus QoS Design Service Policy Model Example Per-Port/Per-VLAN QoS (IP Phone Example)

Interface [range] GigabitEthernet

(in this example VLAN 10 is the Data VLAN

and VLAN 110 is the VVLAN)

class-map VVLAN

match vlan 110

class-map DVLAN

match vlan 10

policy-map VLAN-POLICERS

class VVLAN

police 192k burst ?


exceed-action drop

class DVLAN

police 50m


exceed-action drop

53


Catalyst 3850 Campus QoS Design Egress Queuing (1P7Q3T with WTD) Model

Network Management

Signaling


Transactional Data


Bulk Data

AF2

CS3

CS4

AF4

CS2

AF1

Scavenger CS1

Best Effort DF


Broadcast Video

VoIP

Application

CS5

EF


DSCP


1P7Q3T

PQ

EF

CS5

CS4

Q7

(BW 10%)

CS7 & CS6

CS3 & CS2

Q6

(BW 10% + WTD)

Q5

(BW 10% + DSCP-Based WTD)

Q4


Q3


Q2 (BWR 1%)

Q1 (25%) DF

AF1

CS1

AF2

AF3

AF4

WTD =

Weighted

Tail

Drop

54


! This section configures the class-maps

class-map match-any PRIORITY-QUEUE

match dscp cs4 cs5 ef

class-map match-any CONTROL-MGMT-QUEUE

match dscp cs7 cs6 cs3 cs2

class-map match-all MULTIMEDIA-CONFERENCING-QUEUE

match dscp af41 af42 af43

class-map match-all MULTIMEDIA-STREAMING-QUEUE


class-map match-all TRANSACTIONAL-DATA-QUEUE


class-map match-all BULK-DATA-QUEUE


class-map match-all SCAVENGER-QUEUE

match dscp cs1

Catalyst 3850 Campus QoS Design Egress Queuing (1P7Q3T) Example Part 1 (Class-Maps)

55


! This section configures policy-map

policy-map 1P7Q3T

class PRIORITY-QUEUE

priority level 1

(video = priority l2)

class CONTROL-MGMT-QUEUE

bandwidth percent 10

class MULTIMEDIA-CONFERENCING-QUEUE


queue-limit dscp af43 percent 80



class MULTIMEDIA-STREAMING-QUEUE





Catalyst 3850 Campus QoS Design Egress Queuing (1P7Q3T) Example Part 2 (Policy-Map)

! This section attaches the policy to the int(s)

service-policy output 1P7Q3T

[continued]

class TRANSACTIONAL-DATA-QUEUE





class BULK-DATA-QUEUE

bandwidth percent 4




class SCAVENGER-QUEUE

bandwidth percent 1

class class-default

bandwidth remaining percent 25

56


! This section configures Shaping policy-map

policy-map 50MBPS-SHAPER

class class-default

shape average 50000000

service-policy 2P6Q3T

! Nested service-policy statement invokes queuing policy within the shaped rate

Catalyst 3850 Campus QoS Design Hierarchical Policies: Queuing within Shaped Rate Example

! This section attaches the H-QoS policy to the int(s)

service-policy output 50MBPS-SHAPER

57


Catalyst 3850 Campus QoS Design EtherChannel QoS Design



Interface



Interfaces


Ingress QoS policies are configured on the logical Port-Channel interface

Typically these are simply to enable DSCP trust

(which requires no explicit configuration)

Egress QoS policies are configured on the physical port-member interfaces

58

Cisco Catalyst 4500 (Supervisor 7-E) and 4500-X QoS Design


Agenda









60


Catalyst 4500 Campus QoS Design Catalyst 4500 QoS Role in Campus Networks

Trust DSCP +

Egress Queuing

Core Switches

Access

Switches Catalyst 4500

Distribution

Switches

61


Catalyst 4500 Campus QoS Design


DSCP-Trust Model*

Conditional Trust Model



QoS Design Steps

*Catalyst 4500 IOS MQC will trust DSCP by default


62


! This section applies conditional trust and the policy-map to the interface(s)

qos trust device cisco-phone

service-policy input CISCO-IPPHONE

Catalyst 4500 Campus QoS Design Conditional Trust Model Cisco IP Phone Example

! This section defines the class-maps to match Voice and Signaling

class-map match-all VOICE

match cos 5

class-map match-all SIGNALING

match cos 3

! This section defines the CoS-to-DSCP remarking policy-map

policy-map CISCO-IPPHONE

class VOICE

set dscp ef

class SIGNALING

set dscp cs3

class class-default

set dscp default

63




class VOIP

set dscp ef


set dscp af41

class SIGNALING

set dscp cs3


set dscp af21

class BULK-DATA

set dscp af11

class SCAVENGER

set dscp cs1

class DEFAULT

set dscp default

Catalyst 4500 Campus QoS Design Service Policy Model Example Marking Policy


64



class VVLAN-VOIP

set dscp ef

police 128k bc 8000


exceed-action drop


set dscp cs3

police 32k bc 8000


exceed-action drop


set dscp af41

police 5m bc 8000


exceed-action drop

class SIGNALING

set dscp cs3

police 32k bc 8000


exceed-action drop

[continued]

Catalyst 4500 Campus QoS Design Service Policy Model Example Marking & Policing Policy

[continued]


set dscp af21

police 10m bc 8000


exceed-action set-dscp-transmit af22

class BULK-DATA

set dscp af11

police 10m bc 8000


exceed-action set-dscp-transmit af12

class SCAVENGER

set dscp cs1

police 10m bc 8000


exceed-action drop

class class-default

set dscp default

police 10m bc 8000


exceed-action set-dscp-transmit cs1

service-policy input MARKING&POLICING 65


metadata flow

class-map match-any REALTIME

match application cisco-phone

match application rtp

class-map match-all REALTIME-INTERACTIVE

match application telepresence-media

class-map match-any MULTIMEDIA-CONFERENCING

match application webex-video

match application webex-voice

match application jabber

class-map match-any SIGNALING

match application h323

match application sip

match application telepresence-control

match application rtsp

class-map match-any TRANSACTIONAL-DATA

match application telepresence-data

match application webex-meeting

match application citrix

match application vmware-view

match application wyze-zero-client

match application xmpp-client

Catalyst 4500 Campus QoS Design Service Policy Model Example Medianet Metadata (NBAR2) Classification

66


qos trust device cisco-phone

vlan 10

service-policy input DVLAN-POLICERS

vlan 110

service-policy input VVLAN-POLICERS

Catalyst 4500 Campus QoS Design Service Policy Model Example Per-Port/Per-VLAN QoS (IP Phone Example)

Interface [range] GigabitEthernet

(in this example VLAN 10 is the Data VLAN and VLAN 110 is the VVLAN)

67


Catalyst 4500 Campus QoS Design Egress Queuing (1P7Q1T+DBL) Model

Network Management

Signaling


Transactional Data


Bulk Data

AF2

CS3

CS4

AF4

CS2

AF1

Scavenger CS1

Best Effort DF


Broadcast Video

VoIP

Application

CS5

EF


DSCP


1P7Q1T (+DBL)

PQ

EF

CS5

CS4

Q7

(BWR 10%)

CS7 & CS6

CS3 & CS2

Q6

(BWR 10%)

Q5

(BWR 10%)

Q4

(BWR 10%)

Q3

(BWR 4%)

Q2 (BWR 1%)

Q1 (25%) DF

AF1

CS1

AF2

AF3

AF4

BWR =

Bandwidth

Remaining

68


! This section configures policy-map

policy-map 1P7Q1T

class PRIORITY-QUEUE

priority

class CONTROL-MGMT-QUEUE








dbl



dbl



class class-default


dbl

! This section configures the class-maps

class-map match-all PRIORITY-QUEUE


class-map match-all CONTROL-MGMT-QUEUE


class-map match-all MULTIMEDIA-CONFERENCING-QUEUE


class-map match-all MULTIMEDIA-STREAMING-QUEUE


class-map match-all TRANSACTIONAL-DATA-QUEUE


class-map match-all BULK-DATA-QUEUE


class-map match-all SCAVENGER-QUEUE

match dscp cs1

Catalyst 4500 Campus QoS Design Egress Queuing (1P7Q1T+DBL) Example

! This section attaches the policy to the int(s)

service-policy output 1P7Q1T

69


Catalyst 4500 Campus QoS Design EtherChannel QoS Design



Interface



Interfaces



Typically these are simply to enable DSCP trust

(which requires no explicit configuration)


70


http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat4500aag.html

Catalyst 4500 Campus QoS DesignAt-A-Glance

71


Cisco Catalyst 6500 (Supervisor-2T) QoS Design


Agenda









73


Cisco Catalyst 6500 Campus QoS Design Catalyst 6500 Role in Campus Networks

Trust DSCP

+ Ingress Queuing

+ Egress Queuing

Catalyst 6500

Core/Distribution

Switches

74


Cisco Catalyst 6500 Campus QoS Design

1. Configure Ingress Queuing


QoS Design StepsCisco Catalyst 6500 Supervisor 2T

Catalyst 6500 IOS C3PL will trust DSCP by default


75


BWR =

Bandwidth

Remaining

Network Management

Signaling


Transactional Data


Bulk Data

AF2

CS3

CS4

AF4

CS2

AF1

Scavenger CS1

Best Effort DF


Broadcast Video

VoIP

Application-Class

CS5

EF


DSCP


8Q4T/1P7Q4T

Realtime-Queue

(10% BW/Priority)

EF

CS5

CS4

Control Queue

(10% BW/BWR)

CS7 & CS6

CS3 & CS2

Multimedia-Conferencing Queue

(10% BW/BWR

+ DSCP-WRED)

Multimedia-Streaming Queue

(10% BW/BWR

+ DSCP-based WRED)

Transactional Data

(10% BW/BWR

+ DSCP-based WRED)

Bulk Data

(4% BW/BWR

+DSCP-based WRED)

Scavenger (1% BW/BWR)

Default Queue

(25% BW/BWR

+ WRED)

DF

AF1

CS1

AF2

AF3

AF4

Cisco Catalyst 6500 Campus QoS Design 8Q4T (Ingress) & 1P7Q4T (Egress) Queuing Model Examples

76


class-map type lan-queuing REALTIME-QUEUE


class-map type lan-queuing CONTROL-QUEUE


class-map type lan-queuing MULTIMEDIA-CONFERENCING-QUEUE


class-map type lan-queuing MULTIMEDIA-STREAMING-QUEUE


class-map type lan-queuing TRANSACTIONAL-DATA-QUEUE


class-map type lan-queuing BULK-DATA-QUEUE


class-map type lan-queuing SCAVENGER-QUEUE

match dscp cs1

Cisco Catalyst 6500 Campus QoS Design Queuing Policies: Part 1 of 3 (Common Ingress & Egress Queuing Class-Maps)

77


Cisco Catalyst 6500 Campus QoS Design Queuing Policies: Part 2 of 3 (8Q4T Ingress Queuing Policy-Map)

policy-map type lan-queuing INGRESS-8Q4T

class REALTIME-QUEUE


class CONTROL-QUEUE




random-detect dscp-based

random-detect dscp af41 percent 80 100









[continued]








bandwidth percent 4






bandwidth percent 1

class class-default


random-detect dscp default percent 80 100

service-policy type lan-queuing input INGRESS-8Q4T

78


Cisco Catalyst 6500 Campus QoS Design Queuing Policies: Part 3 of 3 (1P7Q4T Egress Queuing Policy-Map)

policy-map type lan-queuing EGRESS-1P7Q4T

class REALTIME-QUEUE

priority

class CONTROL-QUEUE














[continued]















class class-default


random-detect dscp default percent 80 100

service-policy type lan-queuing output EGRESS-1P7Q4T

79


Cisco Catalyst 6500 Campus QoS Design


No ingress policies typically needed for C6500-Sup2T EtherChannels

(as all ports trust DSCP & CoS by default)


EtherChannel QoS Design



Interface



Interfaces


80


http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat6500sup2taag.html

Cisco Catalyst 6500 QoS DesignAt-A-Glance

81

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat6500sup2taag.htmlhttp://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat6500sup2taag.html

Summary & References


Agenda









83


Summary

The explosion of rich media applications requires network architects to reevaluate current QoS designs

RFC 4594 provides an industry best-practice QoS strategy

Campus QoS is needed primarily to control packet drops

Some rich media applications require fewer than 1 drop per 10,000 packets

QoS architects need to know how trust-states, Port-based QoS, VLAN-based QoS and EtherChannel QoS can impact designs

Hardware queuing (both ingress and egress) vary by platform & linecard

Cisco provides many At-A-Glance guides to get up and running quickly

As well as comprehensive in-depth design chapters for additional design reference

AutoQoS for Medianet Feature is available on Catalyst 2960/3560/3750 and Catalyst 3850 and 4500

Key Takeaways

84


Campus QoS Design 4.0At-A-Glance

QoS Design Strategy At-A-Glance

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qosmrn.pdf

Campus QoS Design At-A-Glance

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampusaag.html

Cisco Catalyst 3560/3750 QoS Design At-A-Glance

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat3xxxaag.html

Cisco Catalyst 4500 QoS Design At-A-Glance


Cisco Catalyst 6500 QoS Design At-A-Glance

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat6500sup2taag.html

Quick Start Guides

85

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qosmrn.pdfhttp://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampusaag.htmlhttp://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat3xxxaag.htmlhttp://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat4500aag.htmlhttp://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat6500sup2taag.html


Campus QoS Design 4.0In-Depth

Enterprise Quality of Service Design 4.0

http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/

QoSIntro_40.html

Campus QoS Design 4.0

http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/

QoSCampus_40.html

Comprehensive Design Chapters

86

http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSIntro_40.htmlhttp://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSIntro_40.htmlhttp://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSCampus_40.htmlhttp://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSCampus_40.htmlhttp://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSCampus_40.html


Additional Sessions

BRKCRS-2890 - Converged Access Quality of Service

BRKRST-2513 - QoS Design For IPSec VPNs

BRKRST-2509 - Mastering Data Center QoS

BRKDCT-3346 - QoS Implementation and Operation in a Nexus 7000 environment

BRKRST-2511 - Implementing in QoS for Enablement of Cloud Services using AVC

BRKRST-2512 - Validating QoS using Medianet Media Awareness

TECRST-2501 - Enterprise QoS Design Strategy

87

https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=13033https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=13033https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=13033https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=13033https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=13033https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=13033https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=13033https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11250https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10526https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10526https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10526https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10526https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10526https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10526https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11257https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11257https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11257https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11257https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11257https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11257https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11257https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11602https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11602https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11602https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11602https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11602https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11602https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=11602https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10375https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10375https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10375https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10375https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10375https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10375https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10375https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10476https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10476https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10476https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10476https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10476https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10476https://www.ciscolive2013.com/connect/sessionDetail.ww?SESSION_ID=10476


Recommended Reading

Expected Release Date: Nov 2013

Comprehensive QoS design guidance for PINs and platforms:

Campus Catalyst 3750/4500/6500

WLAN WLC 5508 / Catalyst 3850 NGWC

Data Center Nexus 1000V/2000/5500/7000

WAN & Branch Cisco ASR 1000 / ISR G2

MPLS VPN Cisco ASR 9000 / CRS-3

IPSec VPNs Cisco ISR G2

ISBN: 1-58714-369-0

88

Ken Briley

http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/

http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/http://www.amazon.com/End---End-QoS-Network-Design/dp/1587143690/


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89


Agenda









90

APPENDIX

91

AutoQoS for Medianet


auto qos video [ cts | ip-camera ]

1P

3Q

3T

Eg

res

s Q

ue

uin

g P

olic

ies

auto qos classify { police }

MM-Conf Policer (


Cisco Catalyst 2960/3560/3750 AutoQoS AutoQoS SRND4 auto qos trust { cos | dscp }

interface GigabitEthernet1/0/1

description L2-ACCESS-PORT

switchport access vlan 10

switchport voice vlan 110

mls qos trust cos

! AutoQoS has configured static CoS-trust

auto qos trust

Layer 2 Switch Port Example: C3750(config-if)# auto qos trust

Layer 3 Routed Interface Example: C3750(config-if)# auto qos trust


description L3-ROUTED-INTERFACE

no switchport

ip address 10.0.1.103 255.255.255.0

mls qos trust dscp

! AutoQoS has configured static DSCP-trust

auto qos trust

94


Cisco Catalyst 2960/3560/3750 AutoQoS AutoQoS SRND4 auto qos video [ cts | ip-camera ]


description L2-ACCESS-PORT-TO-CTS



mls qos trust device cts

! AutoQoS has configured conditional-trust

! for Cisco TelePresence Systems

mls qos trust cos

! AutoQoS has configured CoS-trust

! to be dynamically extended

auto qos video cts

C3750(config-if)# auto qos video cts C3750(config-if)# auto qos video ip-camera


description L2-ACCESS-PORT-TO-IPVS-CAMERA



mls qos trust device ip-camera

! AutoQoS has configured a conditional-trust

! for Cisco for IPVS cameras

mls qos trust dscp

! AutoQoS has configured DSCP-trust

! to be dynamically extended

auto qos video ip-camera

95


Cisco Catalyst 2960/3560/3750 AutoQoS AutoQoS SRND4 auto qos classify

policy-map AUTOQOS-SRND4-CLASSIFY-POLICY

class AUTOQOS_MULTIENHANCED_CONF_CLASS

set dscp af41

class AUTOQOS_BULK_DATA_CLASS

set dscp af11

class AUTOQOS_TRANSACTION_CLASS

set dscp af21

class AUTOQOS_SCAVANGER_CLASS

set dscp cs1

class AUTOQOS_SIGNALING_CLASS

set dscp cs3

class AUTOQOS_DEFAULT_CLASS

set dscp default

C3750(config-if)# auto qos classify

96


Cisco Catalyst 2960/3560/3750 AutoQoS AutoQoS SRND4 auto qos classify police

policy-map AUTOQOS-SRND4-CLASSIFY-POLICE-POLICY


set dscp af41

police 5000000 8000 exceed-action drop


set dscp af11

police 10000000 8000 exceed-action policed-dscp-transmit


set dscp af21



set dscp cs1



set dscp cs3



set dscp default


C3750(config-if)# auto qos classify police Note: Class-maps and IP ACLs

omitted for brevity

97

auto qos voip trust

1P

3Q

3T

Eg

res

s Q

ue

uin

g P

olic

ies

1P

1Q

3T

In

gre

ss

Qu

eu

ing

Po

lic

ies

auto qos voip cisco-phone

VoIP Classifier

Signaling Classifier

Mark EF

Mark CS3

VoIP Policer (


Cisco Catalyst 2960/3560/3750 AutoQoS AutoQoS SRND4 auto qos voip cisco-phone

policy-map AUTOQOS-SRND4-CISCOPHONE-POLICY

class AUTOQOS_VOIP_DATA_CLASS

set dscp ef


class AUTOQOS_VOIP_SIGNAL_CLASS

set dscp cs3



set dscp default


C3750(config-if)# auto qos voip cisco-phone Note: Class-maps

omitted for brevity

99


Cisco Catalyst 2960/3560/3750 AutoQoS AutoQoS SRND4 auto qos voip cisco-softphone

policy-map AUTOQOS-SRND4-SOFTPHONE-POLICY

class AUTOQOS_VOIP_DATA_CLASS

set dscp ef


class AUTOQOS_VOIP_SIGNAL_CLASS

set dscp cs3



set dscp af41



set dscp af11



set dscp af21



set dscp cs1



set dscp cs3



set dscp default

Note: Class-maps and IP ACLs

omitted for brevity

100


Cisco Catalyst 2960/3560/3750 AutoQoS Ingress Queuing Model (1P1Q3T)

1P1Q3T

Q2

Priority Queue

CS6

CS7

EF

CS4

Queue 1

Non-Priority

Default Queue

Network Management

Signaling


Transactional Data


Bulk Data

AF2

CS3

CS4

AF4

CS2

AF1

Scavenger CS1

Best Effort DF


Broadcast Video

VoIP

Application

CS5

EF


DSCP


CS5

Q1T3

Q1T2

Q1T1

CS3

CS2

CS6

CS7

DF

AF1

CS1

AF4

AF3

AF2

101


! This section configures the ingress queues and thresholds

mls qos srr-queue input priority-queue 2 bandwidth 30

mls qos srr-queue input bandwidth 70 30

mls qos srr-queue input buffers 90 10

mls qos srr-queue input threshold 1 80 90

! This section configures the ingress CoS-to-Queue mappings

mls qos srr-queue input cos-map queue 1 threshold 1 0 1 2

mls qos srr-queue input cos-map queue 1 threshold 2 3



! This section configures ingress DSCP-to-Queue Mappings

mls qos srr-queue input dscp-map queue 1 threshold 1 0 8 10 12 14

mls qos srr-queue input dscp-map queue 1 threshold 1 16 18 20 22

mls qos srr-queue input dscp-map queue 1 threshold 1 26 28 30 34 36 38

mls qos srr-queue input dscp-map queue 1 threshold 2 24

mls qos srr-queue input dscp-map queue 1 threshold 3 48 56

mls qos srr-queue input dscp-map queue 2 threshold 3 32 40 46

Cisco Catalyst 2960/3560/3750 AutoQoS Ingress Queuing Model (1P1Q3T)

102


Network Management

Signaling


Transactional Data


Bulk Data

AF2

CS3

CS4

AF4

CS2

AF1

Scavenger CS1

Best Effort DF


Broadcast Video

VoIP

Application

CS5

EF


DSCP


Q1

Priority Queue

Queue 4

(5%)

Queue 2

(30%)

Default Queue

Queue 3 (35%)

Q2T3

Q2T2

Q4T2

Q4T1

Q2T1

CS6

CS7

EF

CS4

CS3

CS2

DF

AF1

CS1

AF4

AF3

AF2

1P3Q3T

CS5

Cisco Catalyst 2960/3560/3750 AutoQoS Egress Queuing Model (1P3Q3T)

103


! This section configures egress buffers and thresholds

mls qos queue-set output 1 buffers 15 30 35 20





! This section configures egress CoS-to-Queue mappings







Cisco Catalyst 2960/3560/3750 AutoQoS Egress Queuing Model (1P3Q3T) ExamplePart 1 of 2

104


Cisco Catalyst 2960/3560/3750 AutoQoS Egress Queuing Model (1P3Q3T) ExamplePart 2 of 2

! This section configures egress DSCP-to-Queue mappings


mls qos srr-queue output dscp-map queue 2 threshold 1 16 18 20 22

mls qos srr-queue output dscp-map queue 2 threshold 1 26 28 30 34 36 38


mls qos srr-queue output dscp-map queue 2 threshold 3 48 56




! This section configures interface egress queuing parameters

queue-set 1

srr-queue bandwidth share 1 30 35 5

priority-queue out

105


http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/autoqosmediacampus.pdf

AutoQoS for MedianetAt-A-Glance

106

http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/autoqosmediacampus.pdf

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