Configuring the Stale Session Timer
Stale session builds up due to events such as network and timeout issues. As a result, PCF starts rejecting new sessions due to capacity or session license limit. The stale session timer configuration lets you set a timer after which PCF revalidates the stale sessions by sending a N7Notify request. If the N7Notify request gets an error response with code 404, then the session is deleted.
To configure the stale session timer for N7 and N15, use the following configuration:
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Log in into Policy Builder.
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Select Reference Data tab.
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From the left pane, select Systems.
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Select and expand your system name.
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Select PCF Configuration.
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In the right pane, configure the following parameters depending on the interface:
Parameter
Description
N7 Stale Session Timer in Minutes
The stale session maps to a session that is not available on the peer.
The configured timeout value determines the duration for which a N7 session can remain idle before PCF revalidates it using the N7Notify request. If the response returned for the request contains an error code 404, then the session gets deleted.
Default value is 180 minutes.
NoteThe stale session timer value should be less than the session expiration time. For information on how to configure the session expiration hours/minutes, see Adding a System.
N15 Stale Session Timer in Minutes
The stale session maps to a session that is not available on the peer.
The configured timeout value determines the duration for which a N15 session can remain idle before PCF revalidates it using the N7Notify request. If the response returned for the request contains an error code 404, then the session gets deleted.
Default value is 180 minutes.
NoteThe stale session timer value should be less than the session expiration time. For information on how to configure the session expiration hours/minutes, see Adding a System.
Preferred Bit Rate
Defines the value of the bitrate that is sent in the N7 policies. The bitrate is automatically converted as per the configured preferred bitrate.