Default APN Selection Based on Context ID

This chapter describes the following topics:

Feature Summary and Revision History

Summary Data

Applicable Product(s) or Functional Area

SGSN

Applicable Platform(s)

ASR 5000

Feature Default

Disabled - Configuration Required

Related Changes in This Release

Not applicable

Related Documentation

  • Command Line Interface Reference

  • SGSN Administration Guide

Revision History

First Introduced.

21.16

Feature Description

Default APN Selection Based on Context ID feature adds the flexibility to select the subscription APN with given context ID when requested APN is not found in subscription. The default APN feature is invoked and is used to determine if the activation can be allowed by substituting the requested APN for one in subscription. The SGSN uses the subscribed APN which matches the configured context id.

Multiple Trigger Feature supports multiple instances of same of cli “apn-selection-default” where we can configure multiple default APNs based on different configuration. SGSN selects the first matched instance and CLI instance’s will be Stored in the same order in which it is defined during the configuration. The “apn-selection-default" and the order of cli “apn-selection-default” decides the priority. The context ID feature should be configured first to take the highest priority. This feature can be used with other features like first-subscription and lowest-context-id. This feature is CLI controlled.

Configuring Default APN Selection Based on Context ID

This section provides information on the CLI commands to configure Default APN Selection Based on Context ID.

Configuring APN Selection Default

Use the following configuration to enable APN Selection Default.

configure 
   apn-remap-table remap_table_name 
      apn-selection-default context-id context_id_value [ orig-apn ]  
      no apn-selection-default context-id context_id_value 
      end

NOTES:

  • no : Removes the subscription of APN based on context id.

  • apn-selection-default context-id : Specifies that the APN will be used as the Default APN.

  • context-id context_id_value : Specifies the usage of APN in subscription record with context ID matching the PDN type if normal APN selection fails. context_id_value must be an integer between 1 and 15.

  • orig-apn : Sends the original APN in the ACTIVATE_DEFAULT_BEARER_REQUEST message to the UE.