# Enterprise cnMatrix – Release 6.2.1 Now Available

**URL:** https://community.cambiumnetworks.com/t/enterprise-cnmatrix-release-6-2-1-now-available/108677
**Category:** cnMatrix
**Tags:** release-notes
**Created:** [July 28, 2026, 5:26am UTC](https://community.cambiumnetworks.com/t/enterprise-cnmatrix-release-6-2-1-now-available/108677 "2026-07-28T05:26:14Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![CAM\_TSK](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/c/5f8ce5/32.png) [@CAM\_TSK](https://community.cambiumnetworks.com/u/CAM_TSK)
#### Post date: [July 28, 2026, 5:26am UTC](https://community.cambiumnetworks.com/t/enterprise-cnmatrix-release-6-2-1-now-available/108677/1 "2026-07-28T05:26:15Z")

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# 🚀 cnMatrix 6.2.1-r3 is Here – More Resilient, More Capable, Better Managed

We’re excited to announce the availability of **Cambium Networks Enterprise cnMatrix Release 6.2.1-r3** , delivering enhanced resiliency, broader Layer 3 capabilities, improved interoperability, and important stability fixes across the cnMatrix portfolio.

## 🌟 What’s New

### 🔄 VRRPv2 Support Across All Switch Models

High availability just got better. **VRRPv2 is now supported on all cnMatrix switch models** , enabling seamless gateway redundancy and improved network uptime across deployments.

### 🔌 Improved Transceiver Compatibility

To improve interoperability with third-party optics, **EX3030RM-P and EX3052RM-P** now automatically default to **10G operation** when an SFP28 transceiver cannot be positively identified. This change provides more reliable connectivity while maintaining compatibility with a broader range of optics.

### 🔗 Auto-VLAN Support for Port Channels

Auto-VLAN functionality has been extended to **port channels** , simplifying deployments where aggregated links are used and reducing manual configuration effort.

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## 🛠 Key Bug Fixes

This release resolves several important issues affecting performance, routing, cloud management, and network stability, including:

- Fixed incorrect link status indication on EX30xxRM-P fiber ports.
- Improved DNS resiliency by utilizing the secondary DNS server when the primary becomes unavailable.
- Addressed ARP resolution issues in large-scale deployments.
- Resolved cnMaestro configuration synchronization problems involving PIM and static routes.
- Fixed random default route loss on EX3024F operating as a Layer 3 core switch.
- Corrected segmentation faults related to PBA MAC-based policy processing.
- Fixed static route handling when DHCP-learned and manually configured routes share the same next hop.

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## ⚙ Deployment Notes

Before upgrading, please keep these recommendations in mind:

- Starting with **software version 6.1** , cnMatrix uses **two separate software images** based on hardware platforms. Ensure the correct image is selected for your switch model.
- Upgrading to **6.2.1 or later** requires **cnMaestro version 5.2.0-r10 or newer**.
- For USB upgrades from releases earlier than 6.0, Cambium recommends shortening the firmware filename before copying it to the USB drive.

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## ⚠ Known Issues

Release 6.2.1-r3 includes a few known limitations:

- **EX3024F:** Flow control is currently not functional.
- **EX3024F:** 2.5 Gbps port speed is not supported. Use **1 Gbps or 10 Gbps SFP/SFP+ transceivers** instead.

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## 📈 Why Upgrade?

With expanded **high availability** , improved **optics interoperability** , enhanced **automation** , and multiple **critical stability fixes** , **cnMatrix 6.2.1-r3** provides a more reliable and scalable foundation for enterprise and service provider networks.

We encourage all customers using supported platforms to evaluate this release and plan their upgrades accordingly.

**Read the complete Release Notes for detailed feature support, known issues, and deployment guidance.** [[https://support.cambiumnetworks.com/files/cnmatrix/](https://support.cambiumnetworks.com/files/cnmatrix/)]