What's New in This Guide

This section introduces the new and updated features for release 25.1.2xx.

Release 25.1.201 - G26971-04, January 2026

Updated the Support for Dual Stack section with the following details:

• Removed the diam-gateway.envSupportedIpAddressType parameter as it no more applicable.
• Replaced the diameter-gateway.dualStackPreferredDnsResolutionIpAddressType with global.dgwRoutingMode and included the associated tables for the supported configuration and upgrade details.

Release 25.1.200 - G26971-03, Decmeber 2025

• Updated the Action Column in the Table D-1 Error Code Dictionary in Error Code Dictionary.
• Added the error codes for Ingress Gateway in Error Code Dictionary.
• Removed error codes from 405-414 from HTTP Status Codes Supported on SBI.

Release 25.1.200 - G26971-01, July 2025

• Feature Updates:
  • New Features:
    • BSF Management Service Pod Congestion Control
      • Added the BSF Management Service Pod Congestion Control section to describe the support for BSF Management service pod congestion control.
      • Added the ocbsf_http_congestion_message_reject_total metrics to BSF Management Service to support pod congestion control in BSF Management service.
      • Added the details of the following Advanced Settings keys to BSF Management Service menu in CNC Console:
        • BSF_MGMT_GET_PCF_BINDING_REQUEST_PRIORITY
        • BSF_MGMT_POST_PCF_BINDING_REQUEST_PRIORITY
        • BSF_MGMT_DELETE_PCF_BINDING_REQUEST_PRIORITY
        • BSF_MGMT_POST_AUDIT_NOTIFY_REQUEST_PRIORITY
        • BSF_MGMT_DELETE_AUDIT_NOTIFY_REQUEST_PRIORITY
        • BSF_MGMT_GET_SESSION_VIEWER_PCF_BINDING_REQUEST_PRIORITY
        • BSF_MGMT_POST_SESSION_VIEWER_DELETE_PCF_BINDING_REQUEST_PRIORITY
        • BSF_MGMT_DELETE_SESSION_VIEWER_DELETEALL_PCF_BINDING_REQUEST_PRIORITY
      • Added the following alerts to List of Alerts to support pod congestion control in BSF Management service:
        • POD_CPU_DOC
        • POD_DOC
        • POD_CONGESTED
        • POD_CPU_CONGESTED
        • POD_CONGESTION_L1
        • POD_CPU_CONGESTION_L1
        • POD_CONGESTION_L2
        • POD_CPU_CONGESTION_L2
• Enhancements:
  • Diameter Gateway Pod Congestion Control
    • Updated the Diameter Gateway Pod Congestion Control to support 5 level of congestion states.
    • Updated the Congestion Control Settings menu in CNC Console with Diameter Gateway congestion control configurations.
    • Updated the Congestion Control Thresholds menu in CNC Console with Diameter Gateway congestion control resource threshold configurations.
    • Updated the Congestion Control Load Shedding Rules menu in CNC Console with Diameter Gateway congestion control discard priorities configurations.
    • Added the details of the following advanced settings keys in Diameter Configuration Settings menu in CNC Console.
      • CONGESTION_DIAMETER_RESPONSE_CODE
      • CONGESTION_DIAMETER_VENDOR_ID
    • Added the details of the following fields in Diameter Message Priority Profiles menu in CNC Console.
      • DRMP
      • OC-Message-Priority
  • Stale Binding Deletion Logging Enhancement
    • Updated the call flow details in Handling Stale Session in BSF.
    • Added Enhanced Logging of BSF Stale Binding Deletion section to describe enhanced logging of BSF stale binding deletion.
    • Added or updated the description of the following fields for Enhanced Logging Configuration in General Settings:
      • Log Level for Stale Session Deletions
      • Enable UE Identifier Information
      • Enable UE Identifier Information in Stale Session Deletion Logic
  • Added BSF_STATE_NON_FUNCTIONAL_CRITICAL alert to BSF_STATE_NON_FUNCTIONAL_CRITICAL, which is used to trigger an alert when the cnDBTier cluster state is down.
  • Updated Georedundancy Support with the details of four-site georedundancy deployment.