1cisco ios qos update, 11/03 © 2003 cisco systems, inc. all rights reserved. cisco ios quality of...
Post on 19-Dec-2015
221 views
TRANSCRIPT
1Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
CISCO IOS QUALITY OF SERVICE UPDATETim McSweeney
Product Manager, QoS
Internet Technologies Division
2Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 2Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Agenda
• The Need for Quality of Service (QoS)
• Cisco IOS QoS Framework
• Roadmap Overview
3Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Source: Forrester Research Inc
It Begins and Ends with Applications
3Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Application Cost of Downtime per Minute
Survey of 250 Fortune 1000 companies
ERP
Supply ChainManagement
E-Commerce
Internet Banking
Customer ServiceCenter
Electronic FundsTransfer
Messaging
$13,000
$11,000
$10,000
$7,000
$3,700
$3,500
$1,000
Source: Forrester Research Inc
Reliability Goal: Eliminate Network Failure PointsReliability Goal: Eliminate Network Failure Points
4Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 4Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
How Do We Make the Network Reliable? CxO & Network Manager Perspective
PERFORMANCE
AVAILABILITY
SECURITY
CiscoIntegrated Security
Cisco Quality of Service (QoS)
Cisco GloballyResilient IP
RELIABILITYRELIABILITY
5Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 5Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
What is QoS? Basic Perspectives
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
The Network Manager Perspective
• Bandwidth, delay, jitter, and packet loss are policy variables to achieve the desired application performance
• Cost savings through efficient use of physical infrastructure
6Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 6Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Why Not Just “Add Bandwidth” For Performance?
• Adding bandwidth is NOT free! A real example: Hotel chain with 2000 locations in the U.S.
Going from 128Kbps to 256Kbps for application performance =
$256 extra per site/month =
$512K/month for 2000 sites =
$6.1M/year in additional cost!
QoS provided required network performance for the hotel reservation application, saving the customer recurring OPEX!
• Bandwidth is not the same everywhere Dependent on location, SLA, and Service
• Need to prioritize bandwidth utilization on the networkThere are speed mismatches, leading to congestion (transient or persistent), in every network
Insurance policy for business critical applications
7Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
What Customers Have Deployed Cisco IOS QoS?
… And Many More!
The World Bank Group
8Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 8Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Agenda
• The Need for QoS
• Cisco IOS QoS Framework
• Roadmap Overview
9Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 9Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
QoS Evolution
199x
Time199x 199x 199x 200x 200x
Best EffortIP Model
Integrated ServicesModel
Differentiated Services
Model
DiffServ-Aware Traffic Engineering
(DS-TE) & L2 VPN QoS
QoS Intelligence &
Automation
10Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 10Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
P r
o v
i s
i o
n i
n g
&
M o
n i
t o
r i
n g
– C
BQ
oS
MIB
, Q
PM
, IP
M/S
MS
P r
o v
i s
i o
n i
n g
&
M o
n i
t o
r i
n g
– C
BQ
oS
MIB
, Q
PM
, IP
M/S
MS
P
o
l i
c
y
– T
he
Mo
du
lar
Qo
S C
LI
(MQ
C)
P
o
l i
c
y
– T
he
Mo
du
lar
Qo
S C
LI
(MQ
C)
Cisco IOS QoS Framework
VPNVPNMultimedia(Video Conf)
Multimedia(Video Conf)
OtherServices
Mission Critical
OtherServices
Mission CriticalVoIPVoIP
Signaling (ECN,RSVP-QoS,RSVP-TE)Signaling (ECN,RSVP-QoS,RSVP-TE)
Link Efficiency Mechanisms (Compression, Fragmentation)Link Efficiency Mechanisms (Compression, Fragmentation)
Congestion Avoidance Mechanisms (RED, WRED, WRED-ECN)Congestion Avoidance Mechanisms (RED, WRED, WRED-ECN)
Congestion Management Techniques (WFQ,CBWFQ,LLQ)Congestion Management Techniques (WFQ,CBWFQ,LLQ)
Classification & Marking (DSCP, IP Precedence, NBAR, etc.)Classification & Marking (DSCP, IP Precedence, NBAR, etc.)
FrameRelay
FrameRelay
PPPHDLC
PPPHDLC
DLSwSDLC
DLSwSDLC ATMATM FE
Gig.E
FEGig.E
FXO/FXST1 PBX
FXO/FXST1 PBX
xDSLCable
xDSLCable
Traffic Conditioners (Policing, Shaping)Traffic Conditioners (Policing, Shaping)
Hybrid-ModelsHybrid-ModelsMPLS-TEMPLS-TEDiffServDiffServIntServIntServ
11Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 11Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Network-Based Application Recognition
My Application is
too slow!
Citrix 25%Netshow 15%Fasttrack 10%FTPFTP 30%30%HTTP 20%
Link Utilization
Mark Citrix as Interactive traffic and police FTP.
Guarantee bandwidth for Citrix!
• Intelligent Classification Engine used in conjunction with QoS class-based features
• Protocol Discovery analyzes application traffic patterns in real time and Discovers which traffic is running on the network
12Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
NBAR Benefit Footprint and Hardware Support
Enterprise Enterprise BackboneBackbone
Enterprise Enterprise Premise EdgePremise Edge
Service Provider Service Provider Aggregation EdgeAggregation Edge
Service Provider CoreService Provider Core
• Application classification• Precise QoS treatment
• Application statistics for bandwidth provisioning• Top-n views
• Threshold settings• Mapping applications to an SP’s service offering
• Cisco Catalyst 6500 and 7600 Series
• MSFC• Planned ASIC
• Cisco Catalyst 6500 and 7600 Series
• FlexWAN, MWAM• Planned ASIC
• Cisco 7100, 7200, and 7500 Series
• Cisco 83x, 1700, 2600-2600XM, 3600, and 3700 Series
• Cisco Catalyst 6500 and 7600 Series
• FlexWAN, MWAM• Planned ASIC
• Cisco 7100, 7200, and 7500 Series
Cisco Catalyst 6500 and 7600 Series
• FlexWAN, MWAM • Planned ASIC
• Cisco 7500 Series
13Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 13Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
NBAR – Intelligent Classification
• IP packet classifier that is capable of classifying applications that have:
Statically assigned TCP and UDP port numbers
Non-TCP and non-UDP IP protocols
Dynamically assigned TCP and UDP port numbers during connection establishment
Classification based on deep packet inspection – NBAR’s ability to look deeper into the packet to identify applications
HTTP traffic by URL, host name or MIME type using regular expressions (*, ?, [ ]), Citrix ICA traffic, RTP Payload type classification
• Currently supports 88 protocols/applications
14Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 14Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
The QoS Challenge:Reduce the Cost & Time to Deploy QoS
199x
Time199x 199x 199x 200x 200x
Time
To
tal C
ost
Designing
Learning
Configuring
Monitoring & Reporting
Manual QoS Deployment
Cisco AutoQoS Target: Cheaper &
Faster!
15Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 15Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS Uses Intelligence to Automate
• Automation makes it simpler toGet 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 faster and cheaperExample Scenario: I need to add VoIP to my network
- Where do I begin for QoS on the network?
- On what should I monitor and report?
• Cisco AutoQoS drastically reduces learning, designing, and configuration
16Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 16Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
• Application ClassificationExample: automatically discovering applications and providing appropriate QoS treatment
• Policy Generation Example: auto-generation of initial and ongoing QoS policies
• Configuration Example: providing high level business knobs, and multi-device / domain automation for QoS
• Monitoring & Reporting Example: generating intelligent, automatic alerts and summary reports
• ConsistencyExample: enabling automatic, seamless interoperability among all QoS features and parameters across a network topology
LAN, MAN, and WAN
Cisco AutoQoS – Automating the Key Elements of QoS Deployment
17Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 17Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS–VoIP Automatic QoS for VoIP Traffic
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 10.1.61.1 255.255.255.0
–auto qos voip
Configures Each Configures Each Switch or RouterSwitch or Router
• LAN & WAN - Routers & Switches
• One single command enables Cisco QoS for VoIP on a given port, interface or PVC
18Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 18Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
QoS Deployment for VoIP
Consistent, end-to-end QoS for VoIPConsistent, end-to-end QoS for VoIP
WAN
Access Layer WAN Distribution Layer
• Classification & Trust Boundary
• Marking / Remarking
• Egress Queue Scheduling
• Buffer Management
• Intelligent Classification
• Bandwidth Provisioning
• Admission Control
• Shaping
• Link Fragmentation & Interleaving
• Header Compression
• Layer 3 Policing
• Egress Scheduling
• (Multiple Queues with WRR)
• Priority Queuing for VOIP
• Buffer Management
19Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 19Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
0
200
400
600
800
1000
1200
50 150 300 650 1100
Customer Sites
$,00
0
0
10
20
30
40
50
Wee
ks
Deployment Cost with AutoQoS Deployment Cost without AutoQoSDeployment Time with AutoQoS Deployment Time without AutoQoS
The Proof is in the Savings with Cisco AutoQoS!
Up to Up to 3 Times3 Times Cheaper & Faster QoS Deployments! Cheaper & Faster QoS Deployments!
Faster QoS deployments allow customers to realize Faster QoS deployments allow customers to realize VoIP opportunities more quickly!VoIP opportunities more quickly!
20Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Fine tuning of AutoQoS-generated parametersFine tuning of AutoQoS-generated parametersby user, if desiredby user, if desired
20Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS-VoIP FrameworkDiffServ Functions Automated
DiffServ DiffServ FunctionFunction QoS FeatureQoS Feature BehaviorBehavior
Classification NBAR DSCP, PortClassification of VoIP based on packet attributes or port trust
Marking Class-based markingSet L3 / L2 attributes to categorize packets into a class
Congestion Management
Percentage-based LLQ, WRRProvide EF treatment to voice & BE treatment to data
Shaping Class-based shaping or FRTSShape to CIR to prevent burst & smooth traffic to Configured Rate
Link Efficiency Mechanism
Header compression Reduce the VoIP bandwidth requirement
Link Efficiency Mechanism
Link fragmentation & interleaving
Reduce jitter experienced by voice packets
21Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 21Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
FunctionalityFunctionality BenefitsBenefits
Auto-determination of Wide-Area Network (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 and design practices in common deployment scenarios.
Initial Policy Generation
Initial Policy Generation provides users an advanced starting point for VoIP deployments. This reduces the time needed to establish an initial feasible QoS policy solution that includes providing QoS to VoIP bearer traffic, signaling traffic, and best-effort data.
Traps & ReportingSyslog & SNMP traps provide visibility into the Classes of Service deployed, and notification of abnormal events such as VoIP packet drops.
Intelligent Classification of Network 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 Control Lists (ACLs).
Cisco AutoQoS-VoIP Functionality & Benefits – WAN
22Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 22Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
FunctionalityFunctionality BenefitsBenefits
Simplified Configuration
In one command, Cisco AutoQoS configures the port to prioritize voice traffic without affecting other network traffic.
Includes the flexibility to tune Cisco AutoQoS settings for unique network requirements.
Automated and Secure
Automatically detects Cisco IP Phones and enables Cisco AutoQoS settings (Catalyst 2950 & 3550).
Prevents malicious activity by disabling QoS settings when a Cisco IP phone is relocated/moved.
Optimal VoIP Performance
Leverages decades of networking experience, extensive lab performance testing, and input from a broad base of customer AVVID installations to determine the optimal QoS configuration for typical VoIP 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 QoS.
Cisco AutoQoS-VoIP Functionality & Benefits – LAN
23Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 23Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
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 10.1.61.1 255.255.255.0
–auto qos voip
QoS Policy Manager (QPM)
Centralized, web-based tool to manage network-wide QoS
for multiple devices
Cisco IOS and CatOS
Using Cisco AutoQoS – VoIP & CiscoWorks QPM
Configures Each Switch or Router
24Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 24Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
SoftwareApplication
40%
OperationalErrors40%
Network20%
• Platform Problems• The network• Operating system or hardware• Change management
• Application bugs (I.e., 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 reducespotential for
operator error
25Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 25Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Understanding the Complete Cisco QoS Picture
Cis
co M
od
ula
r Q
oS
CL
I (M
QC
– T
he
Us
er
La
ng
ua
ge
) C
isco
Mo
du
lar
Qo
S C
LI
(MQ
C –
Th
e U
se
r L
an
gu
ag
e)
Cis
coW
ork
s Q
oS
Po
licy
Man
ag
erC
isco
Wo
rks
Qo
SP
olic
y M
ana
ger
Cisco AutoQoSCisco AutoQoS
Cisco IOS Software or Cisco Catalyst OSCisco IOS Software or Cisco Catalyst OS
Cisco QoS FeaturesCisco QoS Features
Cisco Router or SwitchCisco Router or Switch
DataDataVideoVideoVoiceVoice
26Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 26Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
• Application Classification
Cisco AutoQoS identifies VoIP bearer and control traffic
• Policy GenerationCisco AutoQoS evaluates the network environment and generates initial policy on a given Port, Interface, or PVC
• ConfigurationCisco AutoQoS provides a single command to enable QoS on each interface/PVC
QPM provides centralized network-wide configuration, management and monitoring
• Monitoring & ReportingTraps issued on VoIP packet drops
QPM uses data received from network devices to generate QoS reports
• ConsistencyCisco AutoQoS is fully inter-operable between LAN & WAN devices
Agile QoS Deployment for VoIP Cisco AutoQoS-VoIP and CiscoWorks QPM
27Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 27Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS – VoIP Feature Availability
Platform Platform SoftwareSoftware AvailabilityAvailability
Cisco Catalyst 2950and 3550 Switches
Cisco IOS Software Today!
Cisco Catalyst 6500Series Switches
Cisco Catalyst OS Today!
Cisco 2600, 2600-XM, 3600, 3700, 7200 Series Routers
Cisco IOS Software Today!
Cisco Catalyst 4000 & 4500 Series Switches
Cisco IOS Software Today!
28Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 28Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Agenda
• The Need for QoS
• Cisco IOS QoS Framework
• Roadmap Overview
29Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 29Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS – The Vision
Evolve the network to an intelligent entity that tunes itself for QoS
• Provide high-level business knobs
• Customer retains ultimate control
30Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 30Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Cisco IOS QoS Roadmap Highlights
2H 2002 1H 2003 2H 2003 1H 2004
Time
Fu
nct
ion
alit
y
Flow-QoS,Cisco AutoQoS Phase 3 –
High-Level Policies
NBAR Protocol Discovery MIB,
IPv6 QoS
L2VPN QoS,Cisco AutoQoS Phase 2 –
Voice/Video/Data
Cisco AutoQoS Phase 1 – VoIP
Crypto-Engine QoS
31Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 31Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
AutoQoS for the Enterprise
1. Run AutoDiscovery to profile traffic:
Collects data from the offered traffic for several days, a week, etc., as desired:
Uses NBAR-based protocol discovery
Performs statistical analysis
2. Generate & deploy MQC-based QoS policies:
Maps applications to their corresponding DiffServ classes
Assigns appropriate values for bandwidth and scheduling parameters
Comprehensive QoS Deployment in Two Steps
Procedure:
1. Invoke "auto discovery qos“ on the applicable link
Use "show auto discovery qos“ to view data collection in progress
2. Automatically configure the link with “auto qos” command
Use "show auto qos" to display the QoS policy settings deployed
32Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 32Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Transactional/InteractiveTransactional/Interactive AF21AF21
Telephony SignalingTelephony Signaling CS3CS3
Streaming VideoStreaming Video CS4CS4
Interactive VideoInteractive Video AF41AF41
Interactive VoiceInteractive Voice EFEF
NetworkNetwork ManagementManagement CS2CS2
BulkBulk DataData AF11AF11
ScavengerScavenger CS1CS1
BestBest EffortEffort 00
IP RoutingIP Routing CS6CS6
TrafficTrafficClassClass
DSCPDSCP
AutoQoS DiffServ Class Provisioning
• Automatically provisions for 10 classes
11/03
33Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved. 33Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
Roadmap for Cisco IOS Quality of Service
Automation & Simplification
for QoS Deployment
NovNov20042004
AugAug20042004
SeptSept20042004
JulJul20042004
JunJun20042004
MayMay20042004
AprApr20042004
MarMar20042004
FebFeb20042004
JanJan20042004
DecDec20042004
NovNov20032003
OctOct20032003
SeptSept20032003
AugAug20032003
JulJul20032003
Layer 2 VPN QoS
OctOct20042004
12.0(26)S
• Frame-Relay over IP/MPLS QoS
• ATM Cell & AAL5 over IP/MPLS QoS
• Ethernet over IP/MPLS QoS
12.3(4)T
• CBQoSMIB Enhancements
• NBAR – User-Defined Custom Application Classification
• NBAR – Extended Inspection for HTTP Traffic
• ACLs: Turbo-Classification for QoS on 7200
Targeting 12.0(27)S
• L2TPv3 QoS
• MFR QoS
• FECN/BECN over L2TPv3
• L2 CoS-based WRED
• Set L2 CoS as Police Action
Targeting 12.3(Rls3)T
• AutoQoS for the Enterprise
• NAT-NBAR integration: RTSP over NAT
• NBAR PDLMs – RTSP, Citrix ICA & others
QoS Intelligence for Increased Flexibility
and Control
35Cisco IOS QoS Update, 11/03 © 2003 Cisco Systems, Inc. All rights reserved.
While AutoDiscovery Runs, View Data Collection & Configure the Link
1.Start AutoDiscovery:
auto discovery qos
Stop AutoDiscovery:no auto discovery qosAutoDiscovery collects
& analyzes traffic statistics
View data collection in progress:
show auto discovery qos
2.Configure the link:
auto qos View the QoS policy settings deployed:
show auto qos