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Cisco Bandwidth Quality Manager User Guide Software Release 3.2 Cisco Bandwidth Quality Manager User Guide Software Release 3.2 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Text Part Number: OL-11097-03 THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California. NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Copyright © 2007 Cisco Systems, Inc. All rights reserved. CCVP, the Cisco logo, and the Cisco Square Bridge logo are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a service mark of Cisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, LightStream, Linksys, MeetingPlace, MGX, Networking Academy, Network Registrar, Packet, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries. All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0705R) PREFACE IX ABOUT THIS GUIDE IX OBJECTIVE IX AUDIENCE IX PREREQUISITE KNOWLEDGE IX RELATED DOCUMENTATION IX CONVENTIONS USED IN THIS GUIDE X OBTAINING DOCUMENTATION, OBTAINING SUPPORT, AND SECURITY GUIDELINES X 1 BANDWIDTH QUALITY MANAGER OVERVIEW 1-1 MONITORING AND CONFIGURATION INTERFACE FEATURES 1-2 SWITCHING BETWEEN MODES 1-5 SELECTING A REPORTING PERIOD 1-5 GENERATING REPORTS 1-6 2 CONFIGURING BQM QOS MONITORING 2-1 OVERVIEW 2-1 ENABLING QOS MONITORING FEATURES WITH MONITOR QUEUING AND END TO END MAPS 2-2 Default Monitor-Queuing-Map 2-2 Enabling Microburst Event Detection 2-3 Enabling and Disabling Congestion Analysis and Bandwidth Sizing Features 2-3 End-to-End Measurements 2-5 CLASSIFYING TRAFFIC WITH CLASS MAPS 2-6 MODELING ROUTER QOS CONFIGURATION WITH POLICY MAPS 2-6 COMPLETING THE NETWORK MODEL WITH SITES, ROUTERS, AND INTERFACES 2-7 CUSTOM APPLICATIONS 2-9 CONFIGURING QOS MONITORING FEATURES 2-9 CONFIGURING A MONITOR-QUEUING-MAP 2-9 Configuring Expected Queuing Delay and Loss 2-11 Configuring Corvil Bandwidth (CB) Measurement 2-12 Configuring Microburst Detection 2-13 CONFIGURING A MONITOR END-TO-END MAP 2-14 Cisco Bandwidth Quality Manager User Guide OL-11097-03 i CONFIGURING CLASS MAPS 2-16 CONFIGURING POLICY MAPS 2-21 CONFIGURING A SINGLE-CLASS POLICY MAP 2-22 CONFIGURING A MULTI-CLASS POLICY MAP 2-23 Configuring a Strict Priority Queuing Policy Map 2-23 Configuring a Weighted Fair Queuing (WFQ) Policy Map 2-26 Configuring a Low Latency Queuing (LLQ) Policy Map 2-29 CONFIGURING CUSTOM APPLICATIONS 2-32 CONFIGURING SITES, ROUTERS, AND INTERFACES 2-35 EDITING THE LOCAL SITE 2-36 Configuring a Local Site Router 2-37 Configuring a Local Site Router Interface 2-39 CONFIGURING A NEW REMOTE SITE 2-41 Configuring a Remote Site Router 2-44 Configuring a Remote Site Router Interface 2-45 Configuring Advanced Interface Settings 2-48 EDITING A REMOTE SITE 2-49 DELETING A REMOTE SITE 2-50 3 CONFIGURING NETWORK DEPLOYMENTS 3-1 OVERVIEW 3-1 BASIC ATM PVC, FRAME RELAY PVC, METRO ETHERNET, LEASED LINE DEPLOYMENT 3-1 BASIC MPLS VPN, INTERNET VPN, PRIVATE VPN DEPLOYMENT 3-8 VPN DEPLOYMENT WITH REDUNDANT LOCAL SITE CONNECTIVITY 3-15 VPN DEPLOYMENT WITH REDUNDANT REMOTE SITE CONNECTIVITY 3-15 DUAL-HOMED ATM PVC, FRAME RELAY PVC, METRO ETHERNET, LEASED LINE DEPLOYMENT 3-16 DUAL-HOMED MPLS DEPLOYMENT 3-22 HYBRID DEPLOYMENT 3-29 4 MONITORING NETWORK TRAFFIC 4-1 MONITORING DASHBOARD OVERVIEW 4-1 IDENTIFYING RECENT QUALITY ALARMS 4-2 IDENTIFYING THE TOP CONGESTED INTERFACES 4-3 IDENTIFYING WAN APPLICATION LEADERS 4-4 VIEWING SUMMARY INTERFACE AND CLASS RESULTS 4-5 Congestion Results 4-6 Top Applications Results 4-7 Microburst or Congestion Indicator, Corvil Bandwidth and Expected Delay and Loss Results 4-8 MONITORING CONGESTED INTERFACES 4-9 CONGESTION ANALYSIS OVERVIEW 4-9 SELECTING A REPORT PERIOD 4-13 Defining a Custom Report Period 4-14 SORTING THE CONGESTION ANALYSIS TABLE 4-14 FILTERING THE CONGESTION ANALYSIS TABLE 4-15 REPORTING CONGESTION ANALYSIS RESULTS 4-15 Cisco Bandwidth Quality Manager User Guide ii OL-11097-03 VIEWING INTERFACE AND CLASS CONGESTION 4-16 VIEWING ROUND TRIP DELAY AND LOSS 4-16 VIEWING INTERFACE MICROBURST AND CONGESTION INDICATOR MEASUREMENTS 4-18 VIEWING CLASS MEASUREMENTS 4-19 Expected Queuing Delay 4-20 Expected Queuing Loss 4-21 Microburst Detection 4-21 Congestion Indicator 4-23 Corvil Bandwidth – Delay 4-24 Corvil Bandwidth – Queue Length 4-25 VIEWING PRIORITY CLASS RESULTS 4-26 Corvil Bandwidth - Priority 4-26 Expected Priority Drops 4-27 MONITORING QUALITY ALARMS 4-28 SORTING THE QUALITY ALARMS TABLE 4-29 FILTERING THE QUALITY ALARMS TABLE 4-30 GENERATING A QUALITY ALARMS REPORT 4-30 MONITORING TRAFFIC INSIGHT RESULTS 4-31 TRAFFIC INSIGHT OVERVIEW 4-32 SELECTING A REPORT PERIOD 4-33 Defining a Custom Report Period 4-33 SORTING THE TRAFFIC INSIGHT TABLE 4-34 FILTERING THE TRAFFIC INSIGHT TABLE 4-34 REPORTING TRAFFIC STATISTIC RESULTS 4-35 VIEWING SUMMARY INTERFACE STATISTICS 4-35 VIEWING INTERFACE AND CLASS STATISTICS 4-36 CLASS STATISTICS OVERVIEW 4-36 IDENTIFYING MICROBURST MEASUREMENTS 4-38 IDENTIFYING INTERFACE AND CLASS TRAFFIC PATTERNS 4-40 Average Bit Rate Graph 4-40 Average Packet Rate Graph 4-41 Peak-to-Mean Ratio Graph 4-41 Packet Size Distribution Chart 4-42 IDENTIFYING TRAFFIC LEADERS 4-43 Viewing Top Applications 4-43 Viewing Top Talkers 4-44 Viewing Top Listeners 4-45 Viewing Top Conversations 4-46 5 ANALYZING NETWORK EVENTS 5-1 OVERVIEW 5-1 INVESTIGATING NETWORK EVENTS 5-2 ANALYZING AN EVENT 5-3 Defining and Applying Traffic Filters to Event Analysis Results 5-6 VIEWING EVENT CONGESTION ANALYSIS RESULTS 5-8 Corvil Bandwidth – Delay 5-8 Corvil Bandwidth – Queue Length 5-9 Expected Queuing Delay 5-9 Cisco Bandwidth Quality Manager User Guide OL-11097-03 iii Expected Queue Length 5-10 Expected Queuing Loss 5-11 VIEWING PRIORITY CLASS EVENT RESULTS 5-11 Corvil Bandwidth - Priority 5-11 Expected Priority Drops 5-12 IDENTIFYING EVENT TRAFFIC LEADERS 5-13 Viewing Top Applications 5-13 Viewing Packet Size Distributions 5-14 Viewing Top Talkers 5-15 Viewing Top Listeners 5-16 Viewing Top Conversations 5-17 IDENTIFYING THE SOURCE OF APPLICATION PERFORMANCE PROBLEMS 5-18 IDENTIFYING EVENT TRAFFIC PATTERNS 5-19 Average Bit Rate and Byte-counts Graphs 5-20 Average Packet Rate and Packet-counts Graphs 5-21 Active Flows Graph 5-22 IDENTIFYING EVENT MICROBURST MEASUREMENTS 5-22 IDENTIFYING NETWORK DELAY PROBLEMS 5-23 DISABLING EVENT DETECTION ON SELECTED INTERFACES 5-23 WORKING WITH MANUAL PACKET CAPTURES 5-23 SETTING DISK SPACE QUOTA FOR MANUAL AND EVENT ANALYSIS PACKET CAPTURES 5-29 SETTING A PACKET CAPTURE PASSWORD 5-29 USING MANUAL PACKET CAPTURE TO IDENTIFY EVENTS 5-30 6 BANDWIDTH SIZING 6-1 OVERVIEW 6-1 BANDWIDTH SIZING SUMMARY TABLE 6-2 SELECTING A REPORT PERIOD 6-5 Defining a Custom Report Period 6-5 SORTING THE BANDWIDTH SIZING TABLE 6-6 FILTERING THE BANDWIDTH SIZING TABLE 6-6 REPORTING BANDWIDTH SIZING RESULTS 6-6 VIEWING SIZING RESULTS 6-7 BANDWIDTH SIZING RECOMMENDATIONS 6-8 Single class Configuration Recommendations 6-8 Multi-class Configuration Recommendations 6-9 Priority Class in a Multi class Configuration Recommendations 6-9 Viewing the Sizing Graph 6-10 MONITORING SINGLE-CLASS SIZING REQUIREMENTS 6-11 MONITORING MULTI-CLASS SIZING REQUIREMENTS 6-12 IDENTIFYING NEW CLASS RESOURCE REQUIREMENTS 6-12 7 USING THE COMMAND LINE INTERFACE (CLI) 7-1 INTRODUCTION TO THE CLI
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