Download CCNP-IV-ONT_Mod_3_Lesson_5

Optimizing Converged
Cisco Networks (ONT)
Module 3: Introduction to IP QoS
© 2006 Cisco Systems, Inc. All rights reserved.
Lesson 3.5:
Implementing QoS
with Cisco AutoQoS
© 2006 Cisco Systems, Inc. All rights reserved.
Objectives
 Describe LAN and WAN features of Cisco AutoQoS.
 Identify the guidelines when using Cisco AutoQoS to
implement QoS policies.
 Describe the features of the Cisco Security Device
Manager (SDM).
 Explain how SDM can be used to implement QoS on
Cisco devices.
 Compare and contrast four methods for configuring
QoS on a network.
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS Features in a WAN
Feature
Autodetermination of
WAN Settings
Autoclassification of
VoIP Settings
Benefit
Eliminates the need to know QoS theory and design
in common deployment scenarios
Automatically classifies RTP payload and VoIP
control packets (H.323, H.225 unicast, Skinny, SIP),
and MGCP
Initial Policy
Reduces the time needed to establish an initial,
Generation
feasible QoS policy solution
VoIP LLQ
Provisions LLQ for the VoIP bearer and bandwidth
Provisioning
guarantees for control traffic
WAN Traffic Shaping Enables WAN traffic shaping (FRTS, CIR and burst)
Link Efficiency
Enables link efficiency mechanisms (LFI and cRTP)
as appropriate
Management
Provides SNMP and syslog alerts for VoIP packet
drops
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS Features in a LAN
Feature
Benefit
Simplified
Configuration
One-command voice configuration does not affect other network
traffic. Can be fine tuned.
Queue
Configuration
Configures queue admission criteria, Cisco Catalyst strict-priority
queuing with WRR scheduling, modifies queue sizes and
weights.
Automated &
Secure
Detects Cisco IP Phones and enables AutoQoS settings.
Protects against malicious activity during Cisco IP phone
relocations and moves.
Optimal VoIP
Performance
Leverages decades of networking experience and uses all
advanced QoS capabilities of the Cisco Catalyst switches.
End-to-End
Interoperability
Works with AutoQoS settings on all other Cisco switches and
routers.
Trust Boundary
Enforcement
Enforces the trust boundary on Cisco Catalyst switch access
ports, uplinks, and downlinks
NBAR Support
Enables NBAR for different traffic types
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS Use Guidelines
 Make sure that:
Any QoS configurations on the WAN interface are removed.
CEF is enabled.
NBAR is enabled.
Correct bandwidth statement is configured on the interface.
Cisco AutoQoS is enabled on the interface.
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS Example
 Enable Cisco AutoQoS on relevant devices (such as LAN switches and WAN
routers) that need to perform QoS.
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco AutoQoS Example (Cont.)
 interface Serial1/3
 ip cef
IP CEF and Bandwidth
 bandwidth 1540
 ip address 10.10.100.1 255.255.255.0
 auto qos voip
AutoQoS for VoIP Traffic Recognized by NBAR
© 2006 Cisco Systems, Inc. All rights reserved.
Cisco Security Device Manager (SDM)
© 2006 Cisco Systems, Inc. All rights reserved.
Steps 1 to 4: Creating a QoS Policy
1.
3.
2.
4.
© 2006 Cisco Systems, Inc. All rights reserved.
Step 5: Launching the QoS Wizard
© 2006 Cisco Systems, Inc. All rights reserved.
Step 6: Selecting the Interface
© 2006 Cisco Systems, Inc. All rights reserved.
Step 7: Generating a QoS Policy
© 2006 Cisco Systems, Inc. All rights reserved.
Reviewing the QoS Configuration
© 2006 Cisco Systems, Inc. All rights reserved.
Completing the Configuration: Command
Delivery Status
© 2006 Cisco Systems, Inc. All rights reserved.
Monitoring QoS Status
1.
A
B
2.
© 2006 Cisco Systems, Inc. All rights reserved.
Comparing QoS Implementation Methods
Legacy CLI
MQC
Cisco
AutoQoS
Cisco SDM
QoS Wizard
Ease of use
Poor
Moderately
easy
Simple
Simple
Ability to
fine-tune
Acceptable
Very good
Limited
Limited
Time to
implement
Longest
Average
Shortest
Short
Modularity
Poor
Excellent
Excellent
Very good
© 2006 Cisco Systems, Inc. All rights reserved.
Summary
 Cisco AutoQoS simplifies and shortens the QoS
deployment cycle. Cisco AutoQoS helps in all of the five
major aspects of successful QoS deployments.
 Cisco AutoQoS simplifies deployment and speeds
provisioning of Quality of Service technology over a
Cisco network infrastructure. It reduces human error
and lowers training costs.
 Cisco Security Device Manager (SDM) is an intuitive,
web-based device management tool that was created
for easy and reliable deployment and management of
Cisco IOS routers.
© 2006 Cisco Systems, Inc. All rights reserved.
Self Check
1. What are the requirements that must be met in order
to run AutoQoS?
2. What command is used to enable AutoQoS on an
interface?
3. What traffic classes are supported by SDM?
4. Which method of configuring QoS is the hardest to
implement, requires the most time and offers the least
modularity?
© 2006 Cisco Systems, Inc. All rights reserved.
Q and A
© 2006 Cisco Systems, Inc. All rights reserved.
Resources
 Cisco AutoQoS Q&A
http://www.cisco.com/en/US/partner/tech/tk543/tk759/tk879/tech
nologies_q_and_a_item0900aecd8020a589.shtml
 SDM Demo Lab (Live Demo)
http://www.cisco.com/en/US/partner/products/sw/secursw/ps53
18/prod_presentation0900aecd802adc65.html
 Cisco SDM Multimedia Demo
http://www.cisco.com/cdc_content_elements/flash/sdm/sdm.exe
 SDM Presentations (VoDs)
http://www.cisco.com/en/US/partner/products/sw/secursw/ps53
18/prod_presentation_list.html
 SDM Homepage
http://www.cisco.com/en/US/products/sw/secursw/ps5318/
© 2006 Cisco Systems, Inc. All rights reserved.
© 2006 Cisco Systems, Inc. All rights reserved.