300-115 implementing cisco ip switched networks

8/9/2019 300-115 Implementing Cisco IP Switched Networks

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111© 2002, Cisco Systems, Inc. All rights reserved.

AutoQoS Customer

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WAN TechnologiesBased on

CCNA 4 v3.1 SlidesCompiled & modified by C. Pham

Cisco

A New Paradigm for Automating the Delivery of Network Quality of Service


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AutoQoS Customer



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AutoQoS Customer



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AutoQoS Customer

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A New Paradigm for Automating theDelivery of Network Quality of Service

• Simpler, Cheaper, & Faster QoS Deployments

Reduces operator errors

Up to 3 times cheaper & faster

•

Cisco AutoQoS initial focus: QoS fo r Voice over IP IP Telephony is here!

IP Telephony requires QoS

QoS deployment can be challenging

Cisco AutoQoS makes VoIP deployments simpler, cheaper, andfaster

• Cisco AutoQoS retains 100% customer control overconfiguration


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AutoQoS Customer

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Agenda

• Quality of Service – Why should you care?

• Introducing Cisco AutoQoS

• Cisco AutoQoS Phase 1 - The Details

• Summary

Quality of Service – Why should you care?


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AutoQoS Customer

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ERP

Supply chain mgmt

E-commerce

Internet banking

Customer service center

Electronic funds transfer

Messaging

Survey of 250 Fortune 1000 companies

$13,000

$11,000

$10,000

$7,000

$3,700

$3,500

$1,000

Source: Forrester Research Inc

Reliabi l i ty Goal: El iminate Network Fai lure Poin ts

Application Cost of Downtime per Minute

It Begins and Ends with Applications


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AutoQoS Customer

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RELIAB ILITY = PERFORMANCE AVAILABILITY +

CiscoGlobally

Resilient IP

CiscoQuality ofService(QoS)

SECURITY+

CiscoIntegratedSecurity

How Do We Make the Network Reliable?(CxO & Network Manager Perspective)



AutoQoS Customer

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The User Perspective• The network capability to provide

the desired application performance• It’s all about the applications and

their users• Voice, Video, and Data!

What is QoS?Basic Perspectives

The Network Manager Perspective• Bandwidth, delay, jitter, and

packet loss are po l icy variables to achieve the desiredapplication performance



AutoQoS Customer

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What is QoS?Business Relevance

• Cisco QoS empowersthe network managerto set Proact ivePol ic ies in delivering

the desiredapplicationperformance

•

Increased User Satisfaction• Increased Productivity


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AutoQoS Customer

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Designing

Learning

Configuring

Monitoring & Reporting

The QoS Challenge:Reduce the Cost & Time to Deploy QoS

Manual QoSDeployment

Cisco AutoQoS Target:Cheaper & Faster!

Time

T o t a l C o s t



AutoQoS Customer

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Agenda




• Summary

Introducing Cisco AutoQoS



AutoQoS Customer

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What does Cisco AutoQoS Do ForCustomers?

• Automation makes it simpler to

Get a quick start on QoS deployment

Deploy QoS in the most common business scenarios

Reduce operator and configuration errors

Gain visibility into network & application performance

• Simpler implies fast and cheaper

Example Scenario: I need to add VoIP to my network – Where do I begin for QoS on the network?

– What should I monitor and report on?

Cisco AutoQoS drastically reduces learning, designing and

configuration

Uses intelligence to automate



AutoQoS Customer

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1. Application Classification – Example: automatically discovering applications

and providing appropriate QoS treatment

2. Policy Generation – Example: auto-generation of initial andongoing QoS policies

3. Configuration – Example: providing high level business

knobs, and multi-device / domainautomation for QoS

4. Monitoring & Reporting

–

Example: generating intelligent, automaticalerts and summary reports

5. Consistency

– Example: enabling automatic, seamlessinteroperability among all QoS features andparameters across a network topology – LAN, MAN,

and WAN

Cisco AutoQoS –Au tomat ing the Key Elements o f QoS Deployment



AutoQoS Customer

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0

200

400600

800

1000

1200

50 150 300 650 1100

Customer Sites

$ , 0 0 0

0

10

20

30

40

50

W e e

k s

Deployment Cost with AutoQoS Deployment Cost without AutoQoS

Deployment Time with AutoQoS Deployment Time without AutoQoS

The Proof is in the Savings withCisco AutoQoS!

Up to 3 Times Cheaper & Faster QoS Deployments!

Faster QoS deployments allow customers to realize

VoIP opportunities more quickly!



AutoQoS Customer

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SoftwareApplication

40%

OperationalErrors40%

Network20%

• Platform Problems• The network• Operating system or hardware

• Change management

• Application bugs (ie: DNS)• Misconfiguration

Source: Gartner Group, CNET News.com Jan 26, 2001

Not to Forget….

Human Error is the Most Significant Contributor to Downtime

• Process

consistency

AutoQoS reducespotential for

operator error



AutoQoS Customer

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Fewer knobs, and Fewerlow-level knobs to tune!

Simpler, Cheaper, and Faster

QoS Automation Reduces Operator Error!

RELIAB ILITY = PERFORMANCE AVAILABILITY +

CiscoGlobally

Resilient IP

CiscoQuality ofService

(QoS)

SECURITY+

CiscoIntegratedSecurity



AutoQoS Customer

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Cisco AutoQoS – The Visio n

Evolve the network to an intelligententity that tunes itself for QoS

• Provide high-level business knobs

• Customer retains ultimate control



AutoQoS Customer

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Time

Cisco AutoQoS –VoIP (Phase 1)

• Dynamic PolicyRecommendations

• Business PolicySpecification

• Active Auto-Monitoring(Phase3)

F u n c t i o n a l i t y

Cisco AutoQoS –Voice, Video & Data

Intelligent Alerts(Phase 2)Cisco

Modular QoS CLI(MQC) –The Foundation forCisco AutoQoS(The CiscoLanguage for QoS)

The Future of Cisco AutoQoS

2000 Today 2003 Future


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AutoQoS Customer

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Agenda




• Summary

Cisco AutoQoS Phase 1 - The Details


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AutoQoS Customer

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Cisco AutoQoS Phase1 –‘Automatic QoS for VoIP Traffic’ (AutoQoS – VoIP)

interface Multilink1

ip address 10.1.61.1 255.255.255.0

ip tcp header-compression iphc-format

load-interval 30

service-policy output QoS-Policy

ppp multilink

ppp multilink fragment-delay 10

ppp multilink interleave

interface Serial0

–bandwidth 256

–Ip address 10.1.61.1255.255.255.0

–auto qos voip

Configures EachSwitch or Router

• LAN & WAN - Routers & Switches

• One single command enablesCisco QoS for VoIP on a givenport/interface/PVC!


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AutoQoS Customer

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interface Multilink1

ip address 10.1.61.1 255.255.255.0

ip tcp header-compression iphc-format

load-interval 30

service-policy output QoS-Policy

ppp multilink

ppp multilink fragment-delay 10

ppp multilink interleave

interface Serial0

–bandwidth 256

–Ip address 10.1.61.1255.255.255.0

–auto qos voip

QoS Policy Manager (QPM)

Centralized, web-based toolto manage network-wide QoSfor multiple devices

Cisco IOS and CatOS

Using Cisco AutoQoS – VoIP &CiscoWorks QPM

Configures EachSwitch or Router


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AutoQoS Customer

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•

Application Classification – Cisco AutoQoS identifies VoIP bearer and controltraffic

• Policy Generation – Cisco AutoQoS evaluates the network environment

and generates initial policy on a given Port, Interface,

or PVC

Agile QoS Deployment for VoIP UsingCisco AutoQoS-VoIP and CiscoWorks QPM

• Configuration – Cisco AutoQoS provides a single command to enable QoS on each

interface/PVC

– QPM provides centralized network-wide configuration, managementand monitoring

• Monitoring & Reporting – Traps issued on VoIP packet drops

– QPM uses data received from network devices to generate QoSreports

• Consistency –

Cisco AutoQoS is fully inter-operable between LAN & WAN devices


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AutoQoS Customer

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Cisco AutoQoS BenefitsRouter Platforms

• User can meet the voice QoS requirementswithout extensive knowledge about:

Underlying technologies (ie: PPP, FR, ATM)

Service policies

Link efficiency mechanisms

• AutoQoS lends itself to tuning of allgenerated parameters & configurations

Cisco 2600, 2600-XM, 3600, 3700, and 7200Series Routers


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AutoQoS Customer

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•Supported on serial (PPP & HDLC), ATM PVCs,FR DLCIs and FR/ATM links

Only on point-to-point sub-interfaces for FR and lowspeed ATM PVCs

Policies are specific to underlying transport layerprotocol

• Automatically identifies H.323, MGCP, and SkinnySignaling Protocols

• Command Line Interface

Automation with Cisco AutoQoSRouter Platforms

auto qos voip [trust] – Untrusted Mode by default

auto qos voip [fr-atm] – Enabled on FR DLCI for FR/ATM Interworking


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AutoQoS Customer

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•

ClassificationTrust: relies on DSCP markings from wwitches (DSCP EF &AF31)

Un trust: nBAR RTP Payload Type Classification & AccessLists

•Provisioning

LLQ protects voice bearer and voice signaling traffic

WFQ shares bandwidth fairly in the Best Effort Data class

• Policy GenerationEnables high- (>768Kbps) and low- (


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AutoQoS Customer

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RMON event configuredgenerated by AutoQoS

Monitoring Drops in LLQ

• Thresholds are activated in RMON alarmtable to monitor drops in Voice Class

• Default drop threshold is 1bps

Rmon event 33333 log trap AutoQoS description “AutoQoS

SNMP traps for Voice Drops” owner AutoQoS

Rmon alarm 33350 cbQoSCMDDropBitRate.2881.2991 30 Absolute rising-threshold 1 33333 falling-threshold 0Owner AutoQoS

With AutoQoS

Automation with Cisco AutoQoSRouter Platforms (Cont)

FrameRelay


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AutoQoS Customer

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Functionality Benefits

Auto-determinationof Wide-AreaNetwork (WAN)Settings

Automatic determination of WAN settings for fragmentation and

interleaving, compression, encapsulation, and Frame Relay-ATM

interworking. Eliminates the need to understand QoS theory anddesign practices in common deployment scenarios.

Initial PolicyGeneration

Initial Policy Generation provides users an advanced starting point for

VoIP deployments. This reduces the time needed to establish aninitial feasible QoS policy solution that includes providing QoSto VoIP bearer traffic, signaling traffic, and best-effort data.

Traps & Reporting

Syslog & SNMP traps provide visibility into the Classes of Service

deployed, and notification of abnormal events such as VoIPpacket drops.

IntelligentClassification ofNetwork Traffic

Using Cisco Network Based Application Recognition (nBAR) for deep

and stateful packet inspection, this feature can identify VoIP bearer

and control traffic. Simplifies QoS configurations by reducing –and in some cases eliminating – the need for Access ControlLists (ACLs).

Functionality & Benefits – WAN

Ci A t Q S B fit


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AutoQoS Customer

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• User can meet the voice QoS requirementswithout extensive knowledge about:

Trust boundary

CoS to DSCP mappings

Weighted Round Robin (WRR) & Priority Queue (PQ)

Schduing parameters

• Generated parameters and configurations areuser tunable

Cisco AutoQoS BenefitsSwitch Platforms

Cisco Catalyst 6500, 4500, 3550, and 2950EISwitches

A t ti ith Ci A t Q S


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AutoQoS Customer

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•

Single command at the interface level configuresinterface and global QoS

Support for Cisco IP Phone & Cisco Soft Phone

Support for Cisco Soft Phone currently exists only on the Cat6500

Trust Boundary is disabled when IP Phone is moved / relocatedBuffer Allocation & Egress Queuing dependent on interface type(GE/FE)

• Supported on Static, dynamic-access, voice VLAN

access, and trunk ports• CDP must be enabled for AutoQoS to function properly

• Cisco Catalyst 2950 EI supports WRR, Strict PriorityScheduling, and Strict Priority Queuing

Automation with Cisco AutoQoSSwitch Platforms



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AutoQoS Customer

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• Cisco Catalyst 6500 Switch

Single Command: set port macro [ciscosoftphone |ciscoipphone]

Global: set qos autoqos

Interface: set port qos autoqos voip[ciscosoftphone | ciscoipphone]

Trust Boundary: Set port qos autoqos trust[cos|dscp]

• Cisco Catalyst 3550 and 2950EI Switches

auto qos voip trust – QoS Labels in ingress packets are trustedauto qos voip Cisco-phone – Extends trust boundary if IP Phonedetected

• Cisco Catalyst 4500 Switch

Similar to Cat 3550/2950

Automation with Cisco AutoQoSSwitch Platforms (Cont)

Command Line Interface


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AutoQoS Customer

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Functionality Benefits

SimplifiedConfiguration

In one command, Cisco AutoQoS configures the port to prioritizevoice traffic without affecting other network traffic.

Includes the flexibility to tune Cisco AutoQoS settings for uniquenetwork requirements.

Automated andSecure

Automatically detects Cisco IP Phones and enables Cisco AutoQoSsettings (Catalyst 2950 & 3550).

Prevents malicious activity by disabling QoS settings when aCisco IP phone is relocated/moved.

Optimal VoIPPerformance

Leverages decades of networking experience, extensive labperformance testing, and input from a broad base of customer AVVID

installations to determine the optimal QoS configuration for typicalVoIP deployments.

Uses all advanced QoS capabilities of the Cisco Catalyst switches.

End-to-End

Interoperability

Designed to work in harmony with the Cisco AutoQoS settings on all

other Cisco switches and routers, ensuring consistent end-to-end

quality of service.

Functionality & Benefits – LAN


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AutoQoS Customer

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Cisco AutoQoS - VoIP FrameworkDiffServ Functions Automated

Fine tuning of AutoQoS generated parameters by user, i f desired

DiffServFunction

Cisco IOS / CatOS QoSFeature

Behavior

ClassificationNBAR

DSCP, Port

Classification of VoIP based on packetattributes or port trust

Marking Class-based markingSet L3 / L2 attributes to categorizepackets into a class

CongestionManagement

Percentage-based LLQ,WRR

Provide EF treatment to voice & BEtreatment to data

ShapingClass-based shaping orFRTS

Shape to CIR to prevent burst &smooth Traffic to Configured Rate

Link EfficiencyMechanism

Header compressionReduce the VoIP bandwidthrequirement

Link EfficiencyMechanism

Link Fragmentation &Interleaving

Reduce jitter experienced by voicepackets



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AutoQoS Customer

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• Enable trust boundary (phone, access, uplink/downlink)

• Enable Priority Queuing where required

• Modify queue admission criteria where required

• Configure CoS to DSCP and IP Prec to DSCP maps where required

Server FarmServer Farm

Core

Layer 3 SwitchedBackbone

Layer 3 Switch

Layer 2 Switch

BuildingBuildingBuilding

Access

Distribution

Automation with Cisco AutoQoS –VoIP Intelligence in the LAN



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AutoQoS Customer

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Automation with Cisco AutoQoS –VoIP Intelligence in the WAN

125 Remote SitesWAN

Build MQC-based policies for VoIPIntelligent Classification (Trust / Untrust)

High- and low-speed QoS policiesAutomatically enable QoS features specific to transport(FR, ATM, PPP, FR-to-ATM)

Enable Traffic Shaping where required

Enable LFI (FRF.12, MLP) where required

Enable CRTP

Monitoring and SNMP Alerts

Q S D l t f V IP


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AutoQoS Customer

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QoS Deployment for VoIP –Class-Based QoS MIB (CBQoSMIB)

ftp://ftp.cisco.com/pub/mibs/v2/CISCO-CLASS-BASED-QOS-MIB.my

•

Provides read access to configuration and statistical informationfor MQC based QoS Policies

• Provides MQC configuration information and application statistics

• Provides CBQoS statistics on a per-policy/per-interface or PVCbasis

•

Monitor pre- and post-policy bit rates on a device

SNMP

Interface 1Outbound Policy

CBQoSMIB

Provide CBQoS Statistics &Configuration Information Per policy

Interface 3InboundPolicy

Interface 2InboundPolicy


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AutoQoS Customer

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Bronze

Silver

Gold

QoS Deployement for VoIP - Monitoring andReporting with CBQoSMIB & QPM 3.0

CMPrePolicyPkt

CMPrePolicyByte CMPostPolicyPkt CMDropPkt

CMDropByte

CMNoBufDropPkt

Drop=Pre- Post

After QOS Policies have been appliedBefore QOS

Bronze

Silver

GoldBronze

Silver

QoS Deployment for VoIP


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AutoQoS Customer

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QoS Deployment for VoIP –An example using QPM 3.0


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AutoQoS Customer

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Agenda


•Introducing Cisco AutoQoS


• SummarySummary

Understanding the Complete


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AutoQoS Customer

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Voice Video Data

Understanding the CompleteCisco QoS Picture

Cisco IOS Software or Cisco Catalyst OS

Cisco QoS Features

Cisco AutoQoS

Cisco Router or Switch C i s c o W o r k s Q o S P o l i c y M a n a g e r

C i s c

o M o d u l a r Q o S

C L I

( M Q C –

T h e U s e r L a n

g u a g e )

Th Ci Ad t


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AutoQoS Customer

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The Cisco Advantage –Mos t Comprehens ive QoS Funct ionali ty Avai lable

Firs t to sh ip QoS Automat ion

First to ship Advanced Differentiated Services Toolkit in 2000

Comprehensive QoS language framework via MQC

First to ship Intelligent Application Level classification(Cisco Network Based Application Recognition - NBAR)

Complete QoS monitoring & reporting support withCisco Works QPM 3.0

Broadest platform support (switch & router space) for QoS

Full interoperability across the LAN & WAN DiffServ nodes

Only vendor to ship a Complete End-to-End DifferentiatedServices solution

A N P di f Q S


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AutoQoS Customer

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A New Paradigm for QoSSimpler, Cheaper, Faster QoS Deployments


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AutoQoS Customer

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References

• Cisco QoS Home Page

• http://www.cisco.com/go/qos

• Cisco QPM 3.0

• http://www.cisco.com/en/US/products/sw/c

scowork/ps2064

T t l Ci Q S Pi t

http://www.cisco.com/go/qoshttp://www.cisco.com/go/qoshttp://www.cisco.com/go/qos


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AutoQoS Customer

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QoS Element CiscoAutoQoS /QoS Toolkit

Generic RouterVendors

Generic SwitchVendors

ApplianceVendors

Policy Generation(Comprehensive Toolkit)

Consistency

(Common UserLanguage)

ApplicationClassification

EasyConfiguration

Monitoring &Reporting

Total Cost ofSolution

$ $$ $$$ $$

Outdated Lagging Behind Leading Edge

Total Cisco QoS PictureComprehensive Functionality for Cost Savings


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300-115 implementing cisco ip switched networks

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