Introduction to Capacity and Performance Management

Transcription

1 1 Introduction to Capacity and Performance Management Session 2 Presentation_ID.scr 1

2 Agenda Introductions/Goals Capacity Planning Model Capacity Data Collection Tools and Reporting Best Practices for Capacity Planning Q&A 3 Network Life-Cycle Model Solution Deployment Security Management Planning/ Planning/ Design Design Implementation Configuration Management Performance and Capacity Management Operation Fault Management 4 Presentation_ID.scr 2

3 Performance Management and Capacity Planning Definitions Capacity planning The process of determining the likely future network resource requirements to prevent a performance impact on business critical applications Performance management The practice of managing network service response time, consistency and quality for individual services and services overall 5 Increasing Importance of Capacity Planning Frequent application deployment failure Increased reliance on network services for business applications Exponential growth in business and nonbusiness related traffic Network Failure is typically capacity related 6 Presentation_ID.scr 3

4 Capacity Related Risks Network degradation and failure Application timeouts and failure Application performance degradation 7 Effective Capacity Management Gather Configuration and Traffic Information Observe Statistics Collect Capacity Data Analyze Traffic Performance Baselining Implement Changes Solve Problems Plan Changes Evaluate What-if Analysis 8 Presentation_ID.scr 4

5 Resource Constraints or Bottlenecks CPU Memory Buffering, queuing and latency Interface and pipe sizes Speed and distance Application characteristics 9 Collecting and Reporting Capacity Information 10 Presentation_ID.scr 5

6 Collecting and Reporting Capacity Information Development of information collection plan Tools for collecting capacity information Defining capacity areas Reporting and interpreting results Gather Configuration and Traffic Information Implement Changes Observe Statistics Collect Capacity Data Analyze Traffic Solve Problems Plan Changes Evaluate Performance Baselining What-if Analysis 11 Information to Collect Link utilization CPU Memory Performance (ping response time) Queue/buffer drops Broadcast volume Frame Relay DE, FECN, BECN, traffic-shaping parameters NetFlow statistics RMON 12 Presentation_ID.scr 6

7 Link Utilization Resource Address Segment Avg. Util (%) Peak Util (%) JTKR01S Kbps JYKR01S Kbps FMCR18S4/ Kbps PACR01S3/ Kbps CPU Utilization Resource Polling Address Avg. Util (%) Peak Util (%) FSTR NERT NORR RTCR Presentation_ID.scr 7

8 Performance (Ping Response Time) Resource AADR01 ABNR01 APRR01 ASAR01 ASRR01 ASYR01S AZWRT01 BEJR01 Address AvRes T (ms) AvRes T (ms) AvRes T (ms) AvRes T (ms) RMON Collection RMON traps/collectors RMON router commands rmon event 1 trap MSTrap description "CPU Util>75%" rmon event 2 trap MSTrap description "CPU Util<75%" rmon event 3 trap MSTrap description "CPU Util>90%" rmon event 4 trap MSTrap description "CPU Util<90%" rmon alarm 75 lsystem absolute rising-threshold 75 1 falling-threshold 75 2 rmon alarm 90 lsystem absolute rising-threshold 90 3 falling-threshold Presentation_ID.scr 8

9 Netsys Service Level Management Performance baseline End-to-end traffic baseline with RMON collectors, SNMP and NetFLow statistics Define service level performance policies Assess service level policy performance 17 Internet Performance Monitor WAN troubleshooting Complements CiscoWorks 2000 Measures hop-by-hop response time and availability Evaluates thresholds and generates alarms Provides real-time, and historical reports Utilizes RTR agent embedded in Cisco IOS No extra management hardware required Leverages large installed base of Cisco routers Web Server, File Server or End User IPM Measure Configure Collect Present Measure RTR Cisco Router 18 Presentation_ID.scr 9

10 IPM Hop-by-Hop Reports 19 IPM Historical Reports 20 Presentation_ID.scr 10

11 IPM Real-Time Reports 21 Capacity and Performance Best Practices 22 Presentation_ID.scr 11

12 What-If Analysis Simulation applications Lab application modeling Protocol analyzer, WAN emulator, packet generator, NETSYS performance analyzer Lab network modeling NVS/NVT, lab network modeling Gather Configuration and Traffic Information Implement Changes Observe Statistics Collect Capacity Data Analyze Traffic Solve Problems Plan Changes Evaluate Performance Baselining What-if Analysis 23 Frame Relay Subscription Parameters Boston 256 Kbps Port Host Host New York 512 Kbps Port Dallas 128 Kbps Port New York to Boston PVC 128 Kbps CIR Boston to New York PVC 32 Kbps CIR New York to Dallas 64 Kbps CIR Dallas to New York 32 Kbps CIR New York to Atlanta 96 Kbps CIR Atlanta to New York 32 Kbps CIR Atlanta 128 Kbps Port 24 Presentation_ID.scr 12

13 Service Level Management Define performance requirements Define Upgrade criteria by capacity area Measure capacity and performance Review thresholds and baseline Take action! 25 Service Level Management Threshold CPU Link Memory Output Queue Buffer Misses Broadcast Vol FECN/BECN WAN 75-90% 80-90% 50% 200 Any 10/Sec 10/Sec LAN 75-90% 40-90% 50% 25 Any 300/Sec N/A 26 Presentation_ID.scr 13

14 Peak and Average Utilization Solution to narrow collection interval Low collection interval = high overhead Recommend >=5 minutes Peak values not quite what they seem Close to threshold indicates likely exceed condition (Threshold) Capacity Parameter Green Bar Represents SNMP Value Returned Time in Collection Intervals 27 Capacity Exception Management Alarm critical capacity thresholds (CPU, critical link) Develop notification, escalation and action plan for threshold violations Take action! 28 Presentation_ID.scr 14

15 Performance and Capacity Baselining Interface utilization Device CPU, memory, buffer, I/O utilization Network overhead Raw performance characteristics Monthly or quarterly baseline report Gather Configuration and Traffic Information Implement Changes Observe Statistics Collect Capacity Data Analyze Traffic Solve Problems Plan Changes Evaluate Performance Baselining What-if Analysis 29 Upgrade Planning Understand lead times for circuits, equipment, planning and design upgrade criteria based on service level management 30 Presentation_ID.scr 15

16 QoS Management Prioritize applications by business impact Understand networked application behavior (packet size, timeouts, flows, bandwidth requirements) Develop QoS management plan 31 WAN Subscription Parameters PBX 13 PBX Carrier Cloud UBR Virtual Path CBR Virtual Circuit UBR Virtual Circuit VBR-RT Virtual Circuit PBX 32 Presentation_ID.scr 16

17 Please Complete Your Evaluation Form Session Presentation_ID.scr 17