First Published: October 25, 2024

Ultra Cloud Serving Gateway Control Plane Function

Introduction

This Release Notes identifies changes and issues related to this software release.

Release Lifecycle Milestones

Release Lifecycle Milestone

Milestone

Date

First Customer Ship

FCS

30-Oct-2024

End of Life

EoL

30-Oct-2024

End of Software Maintenance

EoSM

30-Apr-2026

End of Vulnerability and Security Support

EoVSS

30-Apr-2026

Last Date of Support

LDoS

30-Apr-2027

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.

Release Package Version Information

Software Packages

Version
ccg-2024.04.0.SPA.tgz 2024.04.0
NED package

ncs-5.6.8-ccg-nc-2024.04.0

ncs-6.1.12-ccg-nc-2024.04.0
NSO

5.6.8

6.1.12

Descriptions for the various packages provided with this release are available in the Release Package Descriptions section.

Verified Compatability

Products

Version

Ultra Cloud Core SMI

2024.04.1.14

Ultra Cloud CDL

 1.11.9.1

Ultra Cloud Core UPF

2024.04.0

Ultra Cloud SMF

2024.04.0

For information on the Ultra Cloud Core products, refer to the documents for this release available at:

What's New in this Release

Features and Enhancements

This section covers a brief description of the features and enhancements introduced in this release. It also includes links to detailed documentation, where available.

Feature Description

Event Failure Logs for Service Pods

With this feature, the consistent event failure logs are enhanced to support the Create Bearer, Update Bearer, Delete Bearer, PDN Modify List, and Modify Bearer Command procedures for the service pods.

Rolling Upgrade Optimization for Protocol PFCP Pods

For the protocol (PFCP) pods, Converged Core Gateway introduces a session-level response messages cache at the service pod for handling the retransmitted requests. This optimization helps in reduced session and Call Events Per Second (CEPS) loss during the upgrade procedure.

Behavior Changes

This section covers a brief description of behavior changes introduced in this release.

Behavior Change Description

Rate Limiting Configuration for S11 GTPC Endpoints

In high-traffic mobile networks, the S11 GTPC endpoint can receive a large number of Create Session Request messages, especially during peak times or in densely populated areas.

With Rate Limiting configuration, you can control the flow of incoming Create Session Request messages to the GTPC endpoints. This ensures that the GTPC endpoint can handle high traffic volumes effectively.

Previous Behavior: There was no rate limiting functionality for Create Session Requests on S11. This resulted in all requests being accepted, which led to an out-of-memory (OOM) issue.

New Behavior: cnSGWc now supports rate limiting for Create Session Requests on S11 with the following configuration: 


config 
   instance instance-id 1 
      endpoint gtp 
         interface s11 
         overload-control msg-type create-session-request 
         reject-action reject-req 
         rate-limit rate_limit queue-size queue_size reject-threshold threshold_limit pending-request pending_requests 
         exit 
      exit 
   exit 
exit

Note

 

If the rate limiting configuration is enabled, it will also apply to emergency calls and WPS sessions, potentially causing Create Session Request messages for these calls to be rejected or dropped.

This new configuration helps manage high traffic volumes by controlling the number of Create Session Requests that the GTPC endpoint can process at any given time.

Installation and Upgrade Notes

This Release Note does not contain general installation and upgrade instructions. Refer to the existing installation documentation for specific installation and upgrade considerations.

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 Table 1 and verify that it matches either the one provided on the software download page.

To calculate a SHA512 checksum on your local desktop, refer to the table below.

Table 1. 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 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 to not 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.

Open Bugs for this Release

The following table lists the open bug in this specific software release.


Note

This software release may contain open bugs first identified in other releases. Additional information for all open bugs for this release are available in the Cisco Bug Search Tool.

Bug ID

Headline

CSCwm90737

sgw service restart at BearerInfo PdnInfo SubscriberInfo SubsContext

Resolved Bugs for this Release

The following table lists the resolved bugs in this specific software release.


Note

This software release may contain bug fixes first introduced in other releases. Additional information for all resolved bugs for this release are available in the Cisco Bug Search Tool.

Bug ID

Headline

Behavior Change

CSCwk68678

Encrypt all the CLEAR Data in ETCD DB

No

CSCwm05677

UDP endpoints are not Started - 2 0.0.0.0:16002 0.0.0.0:16002 Udp Starting S5E false

No

Operator Notes

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.

Release Package Descriptions

The following table provides descriptions for the packages that are available with this release.

Table 2. Release Package Information

Software Packages

Description

ccg.<version>.SPA.tgz

The SMF offline release signature package. This package contains the SMF deployment software, NED package, as well as the release signature, certificate, and verification information.

ncs-<nso_version>-ccg-nc-<version>.tar.gz

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.

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, refer to https://www.cisco.com/c/en/us/support/index.html.