Data Collection Best Practices Using Perf Counters

• All digital circuit interfaces (DS0, DS1, E1, DS3, E3, SONET, SDH) use time based counters

  • PerfCurrentCount (RFC 2493)
    • Current Interval counters can decrease in value
    • Must align polling with device on 15 minute boundaries
  • PerfIntervalCount
    • Provides history up to 24 hours in 96 15-minute intervals

• All devices and management stations need to be in time sync—use NTP

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