3.59.37 TmS9SessionRefresh

Measurement ID

11432

Measurement Group

P-DRA Diameter Usage

Measurement Type

Simple

Measurement Dimension

Arrayed

Description

Histogram of S9 session refresh durations.

Collection Interval

5 min

Peg Condition

When an S9 session record is refreshed, the appropriate histogram instance shall be incremented by 1. S9 sessions are refreshed during RAA processing.

Measurement Scope

Network, Place Association, Resource Domain

Recovery

1. This measurement shows a histogram of S9 session refresh durations, providing information to assist in setting the Stale Session Timeout for APNs that use this interface. If the Stale Session Timeout for an APN using the S9 interface is set too short, the session audit will send an RAR to the Policy Client that created the session to ask if it is still valid. Having the Stale Session Timeout set too short results in increased RAR traffic between the Policy DRAand the Policy Clients.
   Histogram measurements consist of 101 array entries:

   • 0 – Overflow. Incremented if duration is greater than 9,830 minutes
   • 1-5 – 1 minute buckets. Incremented for durations between 0 and 5 minutes.
   • 6-10 – 5 minute buckets. Incremented for durations between 0 and 30 minutes.
   • 11-15 – 10 minute buckets. Incremented for durations between 30 and 80 minutes.
   • 16-20 – 30 minute buckets. Incremented for durations between 80 and 230 minutes.
   • 21-100 – 120 minute buckets. Incremented for durations between 230 and 9,830 minutes.