R.G. Cole - AT&T Labs 1rperfmon BOF

Active Probes for Performance Monitoring (APPM)

Draft: <draft-cole-appm-00.txt> posted to DISMAN WG list

Authors: Cole, R., Kalbfleisch, C. and D. Romascanu

Outline:• Introduction

• Goals and Objectives

• Architecture

• Previous and Related Work

• Configuration Issues

• Implementation Issues

• Security Issues

• Next Steps

R.G. Cole - AT&T Labs 2rperfmon BOF

Active Probes for Performance Monitoring (APPM)

Goals and Objectives:

• Define a complimentary, ‘active’ probe capability

• Identifies the utility of active probes, e.g.,– troubleshooting paths

– circuit pre-test and turn-up

– fault management

– baselining enhancements

– end-to-end capacity management

– Service Level Agreement (SLA) monitoring

• Active versus Passive Monitoring– control over the sampling

– control over probe characteristics

– traffic generation

R.G. Cole - AT&T Labs 3rperfmon BOF

Active Probes for Performance Monitoring (APPM)

Architectural Issues:

• Network layer and application layer

• Configuration control

• Relationship to fault management and data reduction– Standard instrumentation, data reduction and reporting (e.g., via RMON

methods)

• Deployment considerations– Relationship to passive probes

• Security of active probe methods

R.G. Cole - AT&T Labs 4rperfmon BOF

Active Probes for Performance Monitoring (APPM)

Related Work:

• IPPM WG– set of performance metrics, sampling methods, ..

• DISMAN WG

– active probes for fault management, some performance info, ...

• RMON WG

– passive monitoring, application monitoring (work in prog), reporting, ...

• ApplMIB WG– application and service mgmt (fault, configuration and performance), ...

• Others to be discussed:– RTFM, BMWG, frnetMIB

R.G. Cole - AT&T Labs 5rperfmon BOF

Active Probes for Performance Monitoring (APPM)

Configuration Issues:

• Sampling methods– IPPM work on sampling methodologies

• Probe configurations– static, sampling control, data config, path config, ...

• Statistics, Reports and Historical Data– data reduction, standard reporting methods, raw data, ..

• Indexing to Other Measurements– correlation of end-to-end service level monitoring to component level

monitors

R.G. Cole - AT&T Labs 6rperfmon BOF

Active Probes for Performance Monitoring (APPM)

Implementation Issues:

• Requirements on Implementations– bounds on packet generation, clock resolution, ..

• Error Analysis Statements– statement on the accuracy of the measurement process and results

• Compliance Tests– assessing the conformance of a probe

R.G. Cole - AT&T Labs 7rperfmon BOF

Active Probes for Performance Monitoring (APPM)

Potential Work Items:

• Develop a framework/architecture document– and possibly a separate security document

• Develop a MIB for active probes and others for usage of the MIB

• Define a set of transport level metrics (e.g., IPPM) and a set of corresponding probes

• Define a set of application level metrics and probes