Release notes
This page contains a list of features, changes, known issues and known limitations of the Nerve releases.
Version 2.9.1
This version was released on September 30, 2024. Unless otherwise stated, all known issues and limitations of the previous version are still valid.
Bug fixes
- Fixed critical vulnerability of component OpenSSL.
- Fixed an issue where online licence activation of a node would not work.
- Fixed an issue where CODESYS was deactivated on the Siemens SIMATIC IPC427E device after updating from node version 2.7.0 to 2.9.0. Please update from 2.7.0 to 2.9.1 on this device to counter this issue.
- Fixed an issue of log rotation on node filling up the storage to 100%.
- Fixed an issue where orphaned remote connections triggered brute force protection.
Known issues and limitations
- On nodes newer than version 2.7.0, when using static IP addresses for network interfaces a new MAC address is generated for that interface. In a network configuration where network connectivity depends on MAC address filtering, the node becomes inaccessible.
- Users don´t have sufficient permission to generate alerts in OpenSearch.
Compatibility matrix
Refer to the table below for information on the compatibility between different components of the Nerve system with the current version of the Management System.
| Management System version | Node version | MS/node compatibility | Nerve Connection Manager (v2.0.3 ) | Incremental node update | Full support |
|---|---|---|---|---|---|
| 2.9.1 | 2.2.0 | ||||
| 2.9.1 | 2.2.1 | ||||
| 2.9.1 | 2.3.0 | ||||
| 2.9.1 | 2.3.1 | ||||
| 2.9.1 | 2.4.1 | ||||
| 2.9.1 | 2.5.0 | ||||
| 2.9.1 | 2.6.1 | ||||
| 2.9.1 | 2.7.0 | ||||
| 2.9.1 | 2.8.1 | ||||
| 2.9.1 | 2.9.0 | ||||
| 2.9.1 | 2.9.1 |
Note
Update from Nerve Node 2.7.0 to Nerve Node 2.9.0 and Nerve Node 2.9.1 is supported.
For more information on technical limitations (), and requesting assistance with setting up older versions in the current version (), contact a sales representative or write an issue through the TTTech Industrial support portal.
Scaling and performance limitations
This release has been tested to perform within the following scaling boundaries:
| Maximum number of concurrent devices | 200 |
| Maximum number of concurrently logged in users | 5 |
| Maximum workload size | 50 GB |
| Maximum number of concurrent remote access sessions | 3 |
| Maximum number of workloads in workload repository | 200 |
| Maximum data upload per node | 5 datagrams per second with at least 10 sensor values for 200 nodes in parallel. |