The OLS Subgroup proudly announces the release of **OLS 4.0**, a major milestone in the evolution of open, vendor-neutral, and feature-rich switching platforms. OLS has matured significantly, now supporting an expansive set of features rigorously tested across multiple switch models from leading ODMs, including **Edgecore, Asterfusion, Larch Networks, and CyberTAN**.

###### **What’s New in OLS 4.0?**

**Expanded Feature Set**

- Enhancements include **VLANs, PoE++, DHCP Server/Relay**, and robust security features such as **802.1X authentication, IP Source Guard, and MAC/IP ACLs**.

**Enterprise-Grade Reliability**

- Improved **multicast support (IGMP/MVR), MC-LAG, port mirroring, cable diagnostics**, and more for seamless network operations.

**Cloud Integration**

- Advanced **state messaging, SDK compatibility, and uplink identification**, enabling smooth cloud-based management.

###### **Strength in Collaboration**

The success of OLS 4.0 is built on the collective effort of **TIP members, developers, and testing partners** such as **Candela Technologies Inc. and Shasta Cloud**, who have ensured rigorous testing, issue triaging, and documentation of platform-specific limitations.

###### **QA-Tested DUTs**

OLS 4.0 has undergone extensive validation, ensuring optimal performance and compatibility across a diverse set of **Device Under Test (DUT) models:** [**OLS\_4.0\_DUT\_Coverage 6-11**](/content/wp-content/uploads/OLS_4.0_DUT_Coverage-6-11.pdf)

For questions or additional information, please contact [openlan@telecominfraproject.com](mailto:openlan@telecominfraproject.com).