Cisco Cisco IOS Software Release 12.0(16) Livre blanc
Performance Management: Best Practices White
Paper
Paper
Document ID: 15115
Contents
Introduction
Background Information
Critical Success Factors
Indicators for Performance Management
Performance Management Process Flow
Develop a Network Management Concept of Operations
Measure Performance
Perform a Proactive Fault Analysis
Performance Management Indicators
Document the Network Management Business Objectives
Document the Service Level Agreements
Create a List of Variables for the Baseline
Review the Baseline and Trends Analyses
Document a What−if Analysis Methodology
Document the Methodology used for Increasing Network Performance
Summary
Related Information
Background Information
Critical Success Factors
Indicators for Performance Management
Performance Management Process Flow
Develop a Network Management Concept of Operations
Measure Performance
Perform a Proactive Fault Analysis
Performance Management Indicators
Document the Network Management Business Objectives
Document the Service Level Agreements
Create a List of Variables for the Baseline
Review the Baseline and Trends Analyses
Document a What−if Analysis Methodology
Document the Methodology used for Increasing Network Performance
Summary
Related Information
Introduction
Performance management involves optimization of network service response time and management of the
consistency and quality of individual and overall network services. The most important service is the need to
measure the user/application response time. For most users, response time is the critical performance success
factor. This variable shapes the perception of network success by both your users and application
administrators.
consistency and quality of individual and overall network services. The most important service is the need to
measure the user/application response time. For most users, response time is the critical performance success
factor. This variable shapes the perception of network success by both your users and application
administrators.
Background Information
Capacity planning is the process by which you determine requirements for future network resources in order
to prevent a performance or availability impact on business−critical applications. In the area of capacity
planning, the network baseline (CPU, memory, buffers, in/out octets, etc.) can affect response time. Therefore,
keep in mind that performance problems often correlate with capacity. In networks, this is typically bandwidth
and data that must wait in queues before it can be transmitted through the network. In voice applications, this
wait time almost certainly impacts users because factors such as delay and jitter affect the quality of the voice
call.
to prevent a performance or availability impact on business−critical applications. In the area of capacity
planning, the network baseline (CPU, memory, buffers, in/out octets, etc.) can affect response time. Therefore,
keep in mind that performance problems often correlate with capacity. In networks, this is typically bandwidth
and data that must wait in queues before it can be transmitted through the network. In voice applications, this
wait time almost certainly impacts users because factors such as delay and jitter affect the quality of the voice
call.
Another major issue that complicates performance management is that although high network availability is
mission−critical for both large enterprise and service provider networks, the tendency is to seek short−term
economic gains at the risk of (often unforeseen) higher costs in the long run. During every budget cycle,
network administrators and project implementation personnel struggle to find a balance between performance
and fast implementation. Further, network administrators face challenges that include rapid product
development in order to meet narrow market windows, complex technologies, business consolidation,
competing markets, unscheduled downtime, lack of expertise, and often insufficient tools.
mission−critical for both large enterprise and service provider networks, the tendency is to seek short−term
economic gains at the risk of (often unforeseen) higher costs in the long run. During every budget cycle,
network administrators and project implementation personnel struggle to find a balance between performance
and fast implementation. Further, network administrators face challenges that include rapid product
development in order to meet narrow market windows, complex technologies, business consolidation,
competing markets, unscheduled downtime, lack of expertise, and often insufficient tools.