UCC 5G AMF Release Notes, Release 2025.03.0
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Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
The key highlights of this release include:
● Enhanced Traffic Management: Introduction of Differentiated Services Code Point (DSCP) marking capabilities on N2/SCTP and N26/GTPC interfaces, allowing AMF to apply DSCP values to outgoing packets for appropriate traffic handling and Quality of Service (QoS) prioritization.
● Improved Scalability and Resilience: Support for Stateless Next-Generation Application Protocol (NGAP) Protocol Endpoint (EP) Deployment, enabling the horizontal scaling of AMF NGAP protocol pods and facilitating a transition from an Active-Standby to an Active-Active deployment model for enhanced performance and high availability.
For more information on the AMF software products, see the Related resources section.
Release Lifecycle Milestones
This table provides EoL milestones for Cisco UCC AMF software:
Table 1. EoL milestone information for Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
| Milestone |
Date |
| First Customer Ship (FCS) |
14-Aug-2025 |
| End of Life (EoL) |
14-Aug-2025 |
| End of Software Maintenance (EoSM) |
12-Feb-2027 |
| End of Vulnerability and Security Support (EoVSS) |
12-Feb-2027 |
| Last Date of Support (LDoS) |
29-Feb-2028 |
These milestones and the intervals between them are defined in the Cisco Ultra Cloud Core (UCC) Software Release Lifecycle Product Bulletin available on cisco.com.
This section provides a brief description of the new software features introduced in this release.
Table 2. New software features for Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
| Product impact |
Feature |
Description |
| Software Reliability
|
|
AMF applies DSCP marking to outgoing packets on the N2/SCTP and N26/GTPC interfaces, ensuring that traffic is handled appropriately. Command introduced:
●
config { instance instance-id instance_id { endpoint sctp { dscp dscp_value } } }
— Used to configure the DSCP value for N2-SCTP interface.
●
config { instance instance-id instance_id { endpoint gtp { dscp dscp_value } } } — Used to configure the DSCP value for N26-GTPC interface.
Default Setting: Disabled – Configuration Required |
| Upgrade
|
Stateless NGAP protocol EP deployment
|
You can now enable horizontal scaling of AMF NGAP protocol pods by transitioning from an existing Active-Standby mode of deployment to an Active-Active deployment model. Command introduced: amf-services amf_service_name { stateless-proto-ep enabled } — Default Setting: Disabled – Configuration Required |
This section provides a brief description of the behavior changes introduced in this release.
Table 3. Behavior changes for Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
| Description |
Behavior changes |
| HTTP header "3gpp-Sbi-discovery-service-names" in SCP Model D indirect communication |
Previous Behavior: The AMF used to send the "3gpp-Sbi-Discovery-service-names" HTTP header to the SCP in an array format for all messages. Example: 3gpp-sbi-discovery-service-names : ["nsmf-pdusession"] New Behavior: The "3gpp-Sbi-Discovery-service-names" HTTP header is now sent as a plain string to the SCP, but only when you configure the discovery-params [ service-names ] within the SCP network element profile. Example: 3gpp-sbi-discovery-service-names : nsmf-pdusession |
| Enhancement to Commercial Mobile Alert System (CMAS) send RAN response indication cache validity |
Previous Behavior: For storing the send RAN response indication for CMAS broadcast messages, a hardcoded validity of 24 hours was used. This could lead to a continuous memory increase in ETCD pods during CMAS longevity overnight, potentially causing stability issues and impacting call models during upgrades and restarts.
|
This table lists the resolved issues in this specific software release.
Note: This software release may contain bug fixes first introduced in other releases. To see additional information, click the bug ID to access the Cisco Bug Search Tool. To search for a documented Cisco product issue, type in the browser: <bug_number> site:cisco.com
Table 4. Resolved issues for Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
| Bug ID |
Description |
| Memory consumption of Stand-by Protocol-ep pod is high during performance run |
|
| rest ep pod restarted with error at infra.(*RestRouter).populateHttpResponse. |
|
| Collision b/w UE context Rel & Service Req is not handled properly |
This table lists the open issues in this specific software release.
Note: This software release may contain open bugs first identified in other releases. To see additional information, click the bug ID to access the Cisco Bug Search Tool. To search for a documented Cisco product issue, type in the browser: <bug_number> site:cisco.com
Table 5. Open issues for Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
| Bug ID |
Description |
| Service pod leak observed during AMF ST 7K longevity. |
This section lists compatibility information of the Cisco UCC software products that are verified to work with this version of the UCC AMF software.
Table 6. Compatibility information for Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
| Product |
Supported Release |
| Ultra Cloud Core SMI |
2025.03.1.10 |
| Ultra Cloud CDL |
1.12.2 |
This section provides information about the release packages associated with UCC AMF software.
Table 7. Software packages for Ultra Cloud Core - Access and Mobility Management Function, Release 2025.03.0
| Software Package |
Vesrion |
| amf.2025.03.0.SPA.tgz |
2025.03.0 |
| cdl-1.12.2-amf-2025.03.0.SPA.tgz |
1.12.2 |
| NED package |
ncs-6.4.5-amf-nc-2025.03.0 |
| NSO |
6.1.14 |
Cloud native product version numbering system
The show helm list command displays detailed information about the version of the cloud native product currently deployed.
Image checksum information is available through Cisco.com Software Download Details. To find the checksum, hover the mouse pointer over the software image you have downloaded.
To validate the information, calculate a SHA512 checksum using the information in the following table and verify that it matches the one provided on the software download page.
To calculate a SHA512 checksum on your local desktop, see this table.
Table 8. SHA512 checksum calculation commands by operating system
| Operating System |
SHA512 checksum calculation command examples |
| Microsoft Windows |
Open a command line window and type the following command: > certutil.exe -hashfile <filename.extension> SHA512 |
| Apple MAC |
Open a terminal window and type the following command: $ shasum -a 512 <filename.extension> |
| Linux |
Open a terminal window and type the following command: $ sha512sum <filename.extension> OR $ shasum -a 512 <filename.extension> |
| <filename> is the name of the file. <extension> is the file type extension (for example, .zip or .tgz). |
|
If the SHA512 checksum does not match, we advise you not to attempt upgrading any systems with the corrupted software image. Download the software again and verify the SHA512 checksum again. If there is a constant mismatch, please open a case with the Cisco Technical Assistance Center.
The following table provides key resources and links to the essential documentation and support information for the Ultra Cloud Core AMF and Subscriber Microservices Infrastructure (SMI).
Table 9. Related resources and additional information
| Resource |
Link |
| AMF documentation |
|
| SMI documentation |
|
| Service Request and Additional information |
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