Download Cisco IOS QoS Framework Roadmap Overview

CISCO IOS QUALITY OF SERVICE
UPDATE
Tim McSweeney
Product Manager, QoS
Internet Technologies Division
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
1
Agenda
• The Need for Quality of Service (QoS)
• Cisco IOS QoS Framework
• Roadmap Overview
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
2
It Begins and Ends with Applications
Reliability Goal: Eliminate Network Failure Points
Application
Cost of Downtime per Minute
$13,000
ERP
Supply Chain
Management
$11,000
$10,000
E-Commerce
Internet Banking
$7,000
Customer Service
Center
$3,700
Electronic Funds
Transfer
Messaging
$3,500
$1,000
Survey of 250 Fortune 1000 companies
Source: Forrester Research Inc
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
3
How Do We Make the Network Reliable?
CxO & Network Manager Perspective
RELIABILITY
Cisco Globally
Resilient IP
Cisco Quality of
Service (QoS)
Cisco IOS QoS Update, 11/03
AVAILABILITY
PERFORMANCE
© 2003 Cisco Systems, Inc. All rights reserved.
SECURITY
Cisco
Integrated Security
4
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
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
5
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 network
There are speed mismatches, leading to congestion
(transient or persistent), in every network
Insurance policy for business critical applications
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
6
What Customers Have
Deployed Cisco IOS QoS?
The World Bank Group
… And Many More!
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
7
Agenda
• The Need for QoS
• Cisco IOS QoS Framework
• Roadmap Overview
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
8
QoS Evolution
QoS
Intelligence &
Automation
DiffServ-Aware
Traffic Engineering
(DS-TE)
& L2 VPN QoS
Differentiated
Services
Model
Integrated Services
Model
Best Effort
IP Model
199x
199x
199x
199x
200x
200x
Time
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
9
Other
Services
Mission Critical
P o l i c y – The Modular QoS CLI (MQC)
VoIP
IntServ
DiffServ
Multimedia
(Video Conf)
VPN
MPLS-TE
Hybrid-Models
Signaling (ECN,RSVP-QoS,RSVP-TE)
Classification & Marking (DSCP, IP Precedence, NBAR, etc.)
Congestion Avoidance Mechanisms (RED, WRED, WRED-ECN)
Traffic Conditioners (Policing, Shaping)
Congestion Management Techniques (WFQ,CBWFQ,LLQ)
Link Efficiency Mechanisms (Compression, Fragmentation)
Frame
Relay
Cisco IOS QoS Update, 11/03
PPP
HDLC
DLSw
SDLC
© 2003 Cisco Systems, Inc. All rights reserved.
ATM
FE
Gig.E
FXO/FXS
T1 PBX
Provisioning&
M o n i t o r i n g – CBQoSMIB, QPM, IPM/SMS
Cisco IOS QoS Framework
xDSL
Cable
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Network-Based Application Recognition
My
Application is
too slow!
• 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
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
Link Utilization
Citrix
Netshow
Fasttrack
FTP
HTTP
25%
15%
10%
30%
20%
Mark Citrix as Interactive
traffic and police FTP.
Guarantee bandwidth
for Citrix!
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NBAR Benefit Footprint
and Hardware Support
Enterprise
Backbone
Enterprise
Premise Edge
Service Provider
Aggregation Edge
Service 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 IOS QoS Update, 11/03
• 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
© 2003 Cisco Systems, Inc. All rights reserved.
• 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
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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
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
13
The QoS Challenge:
Reduce the Cost & Time to Deploy QoS
Manual QoS
Deployment
Total Cost
Monitoring & Reporting
Configuring
Designing
Learning
Cisco AutoQoS Target:
Cheaper & Faster!
199x
199x
199x
199x
200x
200x
Time
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
14
Cisco AutoQoS Uses
Intelligence to Automate
• 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 faster and cheaper
Example 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
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
15
Cisco AutoQoS –
Automating the Key Elements of QoS Deployment
•
Application Classification
Example: 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
•
Consistency
Example: enabling automatic, seamless
interoperability among all QoS features and
parameters across a network topology
LAN, MAN, and WAN
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
16
Cisco AutoQoS–VoIP
Automatic QoS for VoIP Traffic
Configures Each
Switch or Router
interface Serial0
–bandwidth 256
–Ip address 10.1.61.1
255.255.255.0
–auto qos voip
• LAN & WAN Routers & Switches
• One single command enables
Cisco QoS for VoIP on a given
port, interface or PVC
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
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
17
QoS Deployment for VoIP
Consistent, end-to-end QoS for VoIP
WAN
Access Layer
WAN
Distribution Layer
• Classification & Trust Boundary
• Intelligent Classification
• Layer 3 Policing
• Marking / Remarking
• Bandwidth Provisioning
• Egress Scheduling
• Egress Queue Scheduling
• Admission Control
• (Multiple Queues with WRR)
• Buffer Management
• Shaping
• Priority Queuing for VOIP
• Link Fragmentation & Interleaving
• Buffer Management
Cisco IOS QoS Update, 11/03
• Header Compression
© 2003 Cisco Systems, Inc. All rights reserved.
18
The Proof is in the Savings with
Cisco AutoQoS!
1200
50
1000
800
40
600
400
20
30
Weeks
$,000
Up to 3 Times Cheaper & Faster QoS Deployments!
10
200
0
0
50
150
300
650
1100
Customer Sites
Deployment Cost with AutoQoS
Deployment Time with AutoQoS
Deployment Cost without AutoQoS
Deployment Time without AutoQoS
Faster QoS deployments allow customers to realize
VoIP opportunities more quickly!
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
19
Cisco AutoQoS-VoIP Framework
DiffServ Functions Automated
Fine tuning of AutoQoS-generated parameters
by user, if desired
DiffServ
Function
QoS Feature
Behavior
Classification
NBAR DSCP, Port
Classification of VoIP based on packet
attributes or port trust
Marking
Class-based marking
Set L3 / L2 attributes to categorize packets
into a class
Congestion
Management
Percentage-based LLQ, WRR
Provide EF treatment to voice & BE
treatment to data
Shaping
Class-based shaping or FRTS
Shape 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
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
20
Cisco AutoQoS-VoIP
Functionality & Benefits – WAN
Functionality
Benefits
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 & Reporting
Syslog & 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 IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
21
Cisco AutoQoS-VoIP
Functionality & Benefits – LAN
Functionality
Simplified
Configuration
Automated and
Secure
Optimal VoIP
Performance
Benefits
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.
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.
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
Cisco IOS QoS Update, 11/03
Designed to work in harmony with the Cisco AutoQoS settings on all
other Cisco switches and routers, ensuring consistent end-to-end QoS.
© 2003 Cisco Systems, Inc. All rights reserved.
22
Using Cisco AutoQoS – VoIP &
CiscoWorks QPM
Configures Each
Switch or Router
Centralized, web-based tool
to manage network-wide QoS
for multiple devices
QoS Policy Manager (QPM)
interface Serial0
–bandwidth 256
–Ip address 10.1.61.1
255.255.255.0
–auto qos 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
Cisco IOS and CatOS
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
23
Not to Forget….
Human Error is the Most Significant Contributor to Downtime
• Platform Problems
• The network
• Operating system or hardware
• Change management
• Process
consistency
Operational
Errors
40%
Network
20%
Software
Application
40%
AutoQoS reduces
potential for
operator error
• Application bugs (I.e., DNS)
• Misconfiguration
Source: Gartner Group, CNET News.com Jan 26, 2001
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
24
Video
Cisco AutoQoS
Cisco QoS Features
Cisco IOS Software or Cisco Catalyst OS
Cisco Router or Switch
Cisco IOS QoS Update, 11/03
Data
© 2003 Cisco Systems, Inc. All rights reserved.
(MQC – The User Language)
CiscoWorks QoS
Policy Manager
Voice
Cisco Modular QoS CLI
Understanding the Complete
Cisco QoS Picture
25
Agile QoS Deployment for VoIP
Cisco AutoQoS-VoIP and CiscoWorks QPM
• Application Classification
Cisco AutoQoS identifies VoIP bearer and control traffic
• Policy Generation
Cisco AutoQoS evaluates the network environment
and generates initial policy on a given Port, Interface,
or PVC
• Configuration
Cisco AutoQoS provides a single command to enable QoS on each
interface/PVC
QPM provides centralized network-wide configuration, management and
monitoring
• Monitoring & Reporting
Traps issued on VoIP packet drops
QPM uses data received from network devices to generate QoS reports
• Consistency
Cisco AutoQoS is fully inter-operable between LAN & WAN devices
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
26
Cisco AutoQoS – VoIP
Feature Availability
Platform
Software
Availability
Cisco Catalyst 2950
and 3550 Switches
Cisco IOS Software
Today!
Cisco Catalyst 6500
Series Switches
Cisco Catalyst OS
Today!
Cisco 2600, 2600-XM, 3600,
3700, 7200 Series Routers
Cisco IOS Software
Cisco Catalyst 4000 & 4500
Series Switches
Cisco IOS Software
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
Today!
Today!
27
Agenda
• The Need for QoS
• Cisco IOS QoS Framework
• Roadmap Overview
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
28
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
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
29
Cisco IOS QoS Roadmap Highlights
Flow-QoS,
Cisco AutoQoS Phase 3 –
High-Level Policies
Functionality
L2VPN QoS,
Cisco AutoQoS Phase 2 –
Voice/Video/Data
Cisco AutoQoS Phase 1 –
VoIP
Crypto-Engine QoS
NBAR Protocol
Discovery MIB,
IPv6 QoS
2H 2002
1H 2003
2H 2003
1H 2004
Time
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
30
AutoQoS for the Enterprise
Comprehensive QoS Deployment in Two Steps
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 MQCbased QoS policies:
Maps applications to their
corresponding DiffServ
classes
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
Assigns appropriate values for
bandwidth and scheduling
parameters
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
31
AutoQoS DiffServ Class Provisioning
• Automatically
provisions for
10 classes
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
Traffic
Class
DSCP
IP Routing
CS6
Interactive Voice
EF
Interactive Video
AF41
Streaming Video
CS4
Telephony Signaling
CS3
Transactional/Interactive
AF21
Network Management
CS2
Bulk Data
AF11
Scavenger
CS1
Best Effort
0
11/03
32
Roadmap for Cisco IOS Quality of Service
Automation &
Simplification
for QoS Deployment
Jul
2003
Aug
2003
Sept
2003
Oct
2003
Nov
2003
Dec
2004
QoS Intelligence for
Increased Flexibility
and Control
Layer 2 VPN QoS
Jan
2004
Feb
2004
Mar
2004
Apr
2004
May
2004
Jun
2004
12.0(26)S
12.3(4)T
Targeting 12.0(27)S
• Frame-Relay over
IP/MPLS QoS
• CBQoSMIB
Enhancements
• L2TPv3 QoS
• ATM Cell & AAL5
over IP/MPLS
QoS
• NBAR – UserDefined Custom
Application
Classification
• FECN/BECN over
L2TPv3
• Ethernet over
IP/MPLS QoS
• NBAR – Extended
Inspection for
HTTP Traffic
• MFR QoS
• L2 CoS-based
WRED
• Set L2 CoS as
Police Action
Jul
2004
Aug
2004
Sept
2004
Oct
2004
Nov
2004
Targeting
12.3(Rls3)T
• AutoQoS for the
Enterprise
• NAT-NBAR
integration:
RTSP over NAT
• NBAR PDLMs –
RTSP, Citrix ICA &
others
• ACLs: TurboClassification for
QoS on 7200
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
33
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
34
While AutoDiscovery Runs,
View Data Collection & Configure the Link
1.
Start AutoDiscovery:
auto discovery qos
AutoDiscovery collects
& analyzes traffic
statistics
Stop AutoDiscovery:
no auto discovery qos
View data collection
in progress:
show auto discovery qos
2.
Configure the link:
auto qos
Cisco IOS QoS Update, 11/03
© 2003 Cisco Systems, Inc. All rights reserved.
View the QoS policy
settings deployed:
show auto qos
35