Release Notes for the Cisco Cloud Native BNG Control Plane, Version 2026.02.0
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Release Notes for the Cisco Cloud Native BNG Control Plane, Version 2026.02.0
Release Notes for the Cisco Cloud Native BNG Control Plane, Version 2026.02.0
This Release Notes identifies changes and issues related to the software release of Cisco Cloud Native BNG Control Plane.
The key highlights for the cnBNG CP Release 2026.02.0 include:
◦ L3 Routed Subscriber Sessions with SRG
Enhance scalability and deployment flexibility in Layer 3 access networks by extending support for IPv4 and dual-stack routed subscriber sessions to include bundle-ether VLAN interfaces.
◦ Multiple Control Plane associations
Improve redundancy and operational flexibility by enabling a single User Plane (UP) to connect to multiple Control Plane (CP) instances simultaneously, allowing for more versatile mapping of Subscriber Redundancy Groups (SRG) across different Control Planes.
◦ Metrics verbosity behavior change
Improve production monitoring efficiency by changing the default application-layer metrics verbosity from Debug to Production, reducing the number of metrics shown by default and requiring explicit enablement for Debug and Trace metrics.
For more information about cnBNG Control Plane and related products, see the Related resources section.
Release lifecycle milestones
The following table provides EoL milestones for Cisco cnBNG Control Plane software:
Table 1. EoL milestone information for cnBNG CP, Release 2026.02.0
| Milestone |
Date |
| First Customer Ship (FCS) |
30-Apr-2026 |
| End of Life (EoL) |
30-Apr-2027 |
| End of Software Maintenance (EoSM) |
30-Apr-2029 |
| End of Vulnerability and Security Support (EoVSS) |
30-Apr-2030 |
| Last Date of Support (LDoS) |
30-Oct-2030 |
This section provides a brief description of the new software features introduced in this release.
Table 2. New software features for cnBNG CP, Release 2026.02.0
| Product impact |
Feature |
Description |
| Software Reliability
|
We have enhanced this feature to support IPv4, and dual-stack routed subscriber sessions, including on bundle-ether VLAN interfaces, which improves scalability and deployment flexibility in Layer 3 access networks. Previously, only IPv6 was supported. |
|
| Software Reliability
|
You can now improve cnBNG redundancy and flexibility by enabling a single User Plane (UP) to connect to multiple Control Plane (CP) instances at the same time. This allows Subscriber Redundancy Groups (SRG) to be mapped more flexibly across different Control Planes. |
|
| Software Reliability |
We have now changed the default application-layer metrics verbosity from Debug to Production. As a result, some metrics are no longer visible by default and will only be visible if explicitly enabled. |
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 3. Open issues for cnBNG CP, Release 2026.02.0
| Bug ID |
Description |
| Vulnerabilities detected in Nessus scan - Apr release (2026.02.1.i07) |
This section lists compatibility information of the software components/packages that are verified to work with this version of the cnBNG Control Plane software.
Table 4. Compatibility information for cnBNG CP, Release 2026.02.0
| Product |
Supported Release |
| BNG UP (ASR 9K) |
IOS XR Release 26.2.1* |
| SMI CEE |
2026.02.1.07 |
| SMI Cluster Deployer |
2026.02.1.07 |
| SMI Base ISO Image |
24.04.0-20260408 |
*Subject to feature availability.
This section provides information about the release packages associated with cnBNG Control Plane software.
Table 5. Software packages for cnBNG CP, Release 2026.02.0
| Software Package |
Description |
Release |
| bng.2026.02.0.SPA.tgz |
The cnBNG CP offline release signature package. This package contains the cnBNG CP deployment software as well as the release signature, certificate, and verification information. |
2026.02.0 |
| ncs-6.4.8.2-cisco-bng-nc-1.1.2026.02.0 |
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-6.4.8.2-cisco-bng-smi-deployer-2026.02.0 |
NSO Core-Function-Pack |
6.4.8.2 |
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 6. 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 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.
This table provides key resources and links to the support information and essential documentation for cnBNG Control Plane and related products.
Table 7. Related resources and additional information
| Resource |
Link |
| cnBNG Control Plane documentation |
|
| cnBNG User Plane documentation |
|
| Physical BNG documentation |
|
| SMI documentation |
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