RFC 1404 (rfc1404) - Page 2 of 27

A Model for Common Operational Statistics

RFC 1404                 Operational Statistics             January 1993


   3.4.1   Chosen Metrics .......................................... 10
   4.      Polling Frequencies ..................................... 11
   4.1     Variables Needing High Resolution Polling ............... 11
   4.2     Variables not Needing High Resolution Polling ........... 11
   5.      Pre-Processing of Raw Statistical Data .................. 12
   5.1     Optimizing and Concentrating Data to Resources .......... 12
   5.2     Aggregation of Data ..................................... 12
   6.      Storing of Statistical Data ............................. 13
   6.1     The Storage Format ...................................... 13
   6.1.1   The Label Section ....................................... 14
   6.1.2   The Device Section ...................................... 14
   6.1.3   The Data Section ........................................ 16
   6.2     Storage Requirement Estimations ......................... 17
   7.      Report Formats .......................................... 18
   7.1     Report Types and Contents ............................... 18
   7.2     Contents of the Reports ................................. 18
   7.2.1   Offered Load by Link .................................... 18
   7.2.2   Offered Load by Customer ................................ 18
   7.2.3   Resource Utilization Reporting .......................... 19
   7.2.3.1 Utilization as Maximum Peak Behavior .................... 19
   7.2.3.2 Utilization as Frequency Distribution of Peaks .......... 19
   8.      Considerations for Future Development ................... 20
   8.1     A Client/Server Based Statistical Exchange System ....... 20
   8.2     Inclusion of Variables not in the Internet Standard MIB . 20
   8.3     Detailed Resource Utilization Statistics ................ 20
   Appendix A  Some formulas for statistical aggregation ........... 21
   Appendix B  An example .......................................... 24
   Security Considerations ......................................... 27
   Author's Address ................................................ 27

1. Introduction

   Today it is not uncommon for many network administrations to collect
   and archive network management metrics that indicate network
   utilization, growth, and outages.  The primary goal is to facilitate
   near-term problem isolation and longer-term network planning within
   the organization.  There is also the larger goal of cooperative
   problem isolation and network planning between network
   administrations.  This larger goal is likely to become increasingly
   important as the Internet continues to grow.

   There exist a variety of network management tools for the collection
   and presentation of network management metrics.  However, different
   kinds of measurement and presentation techniques makes it difficult
   to compare data between networks.  Plus, there is not common
   agreement on what metrics should be regularly collected or how they
   should be displayed.




Stockman