Release Notes for UCC cnSGWc, Release 2026.02.0
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Ultra Cloud Core - Serving Gateway Function, Release 2026.02.0
Ultra Cloud Core - Serving Gateway Function, Release 2026.02.0
This Release Notes identifies changes and issues related to the software release of Ultra Cloud Core (UCC) Serving Gateway Control Plane Function (cnSGWc).
The key highlight of this release includes:
· Enhanced subscriber session management and filtering: Adds new filtering criteria to session management commands, enabling targeted monitoring and bulk clearing of specific subscriber subsets to improve operational efficiency.
For more information about Ultra Cloud Core - Serving Gateway Control Plane Function, see the Related resources section.
Release lifecycle milestones
The following table provides EoL milestones for Cisco UCC cnSGWc software:
Table 1. EoL milestone information for UCC cnSGWc, Release 2026.02.0
| Milestone |
Date |
| First Customer Ship (FCS) |
23-Apr-2026 |
| End of Life (EoL) |
23-Apr-2026 |
| End of Software Maintenance (EoSM) |
22-Oct-2027 |
| End of Vulnerability and Security Support (EoVSS) |
22-Oct-2027 |
| Last Date of Support (LDoS) |
31-Oct-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 UCC cnSGWc, Release 2026.02.0
| Product impact |
Feature |
Description |
| Software Reliability |
This feature introduces new filtering parameters to the existing show and clear subscriber commands. These enhancements allow operators to target sessions based on their activity state (idle or active) or the specific duration the session has been connected. Additionally, a max-count limit can be applied to restrict the number of sessions processed or displayed, providing better control over system resources during bulk operations. Commands introduced: The following options are added to the show subscriber, show subscriber count, and clear subscriber commands: · sub-state: Filters or clears sessions based on the subscriber's current activity state. o active: Targets sessions currently in an active state. o idle: Targets sessions currently in an idle state. · connected-duration: Filters or clears sessions based on the length of time the session has been connected. o greater-than <seconds>: Targets sessions connected longer than the specified value. o lesser-than <seconds>: Targets sessions connected for less than the specified value. · max-count: Limits the number of subscriber sessions returned or cleared. o lesser-than <value>: Specifies the maximum number of sessions to be impacted by the command. |
There are no behavior changes in this specific software release.
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 3. Resolved issues for UCC cnSGWc, Release 2026.02.0
| Bug ID |
Description |
| cnSGW not sending sx-delete-req to UPF after sla timer expired leading to stale session. |
|
| Session Reports are missed by cn-SGW due to UPF sending session report on stale SEID. |
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 4. Open issues for UCC cnSGWc, Release 2026.02.0
| Bug ID |
Description |
| cnSGW not reporting User location changes in CDR for an EBI of subscriber with Multiple default bearers (same QCI and same APN). |
This section lists compatibility information of the Cisco UCC software products that are verified to work with this version of the UCC cnSGWc software.
Table 5. Compatibility information for UCC cnSGWc, Release 2026.02.0
| Product |
Supported Release |
| Ultra Cloud Core SMI |
2026.02.1.07 |
| Ultra Cloud CDL |
2.2.0 |
| Ultra Cloud Core UPF |
2026.02.0 |
| Ultra Cloud cnSGWc |
2026.02.0 |
This section provides information about the release packages associated with UCC cnSGWc software.
Table 6. Software packages for UCC cnSGWc, Release 2026.02.0
| Software Package |
Description |
Release |
| ccg-2026.02.0.SPA.tgz |
The offline release signature package. This package contains the deployment software, NED package, as well as the release signature, certificate, and verification information. |
2026.02.0 |
| ncs-6.4.8.2-ccg-nc-1.1. 2026.02.0.tar.SPA.tgz |
The NETCONF NED package. This package includes all the yang files that are used for NF configuration. Note that NSO is used for the NED file creation. |
6.4.8.2 |
| ncs-6.1.14-ccg-nc-1.1. 2026.02.0.tar.SPA.tgz |
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.
The appropriate version number field increments after a version has been released. The new version numbering format is a contiguous sequential number that represents incremental changes between releases. This format facilitates identifying the changes between releases when using Bug Search Tool to research software releases
Software integrity version
To verify the integrity of the software image you have from Cisco, you can validate the SHA512 checksum information against the checksum identified by Cisco for the software.
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.
At the bottom you find the SHA512 checksum, if you do not see the whole checksum you can expand it by pressing the "..." at the end.
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 7. Checksum calculations per 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> |
| Note: <filename> is the name of the file. <extension> is the file type extension (for example, .zip or .tgz). |
|
If the SHA512 checksum matches, you can be sure that no one has tampered with the software image or the image has not been corrupted during download.
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.
Certificate validation
The software images are signed via x509 certificates. For information and instructions on how to validate the certificates, refer to the README file packaged with the software
This table provides key resources and links to the support information and essential documentation for cnSGWc and other Ultra Cloud Core (UCC) products.
Table 8. Related resources and additional information
| Resource |
Link |
| cnSGWc documentation |
|
| SMF documentation |
|
| SMI documentation |
|
| UPF documentation |
|
| Service request and additional information |
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