The LF Broadband community is pleased to announce the release of VOLTHA 2.14, delivering significant enhancements that improve network flexibility, operational efficiency, and diagnostic capabilities. This release introduces multi-NNI support in the Voltha Go Controller (VGC), streamlines ONU reboot processes, and provides on-demand diagnostic tools that strengthen VOLTHA/SEBA’s position as a robust solution for large-scale operator deployments.
The full release notes are also available here.
Key Highlights of VOLTHA 2.14
1. Multi-NNI Support Across VOLTHA
VOLTHA 2.14 introduces full multi-NNI support, enabling operators to use multiple uplink interfaces and manage them more flexibly across the system.
Full Uplink Interface Support at OLT. Until now, VOLTHA allowed only the first uplink NNI interface on the OLT to be used. With this release, all uplink interfaces are supported:
- Subscriber flows can be programmed for a specified uplink NNI.
- Modifications span multiple components, including openolt, voltha-protos, openolt-adapter, and onos-olt.
Additionally, the Voltha Go Controller (VGC) is updated to support multiple NNIs, enabling more flexible uplink management.
- Handles southbound multi-NNI indications.
- Allows northbound service activation with specific NNI configuration.
- Generates flows based on configured NNIs per service.
- Adds DHCP trap flow on all NNI ports when an OLT is activated.
This upgrade ensures more robust and scalable uplink connectivity for a wider range of operator topologies across the VOLTHA stack.
2. Optimized ONU Reboot Call Flow
VOLTHA 2.14 reduces call flows across VOLTHA during an ONU reboot or loss of signal (LOS). With improvements in the openonu-adapter and openolt-adapter, the system now:
- Stores ONU configurations within the adapter for quick restoration.
- Configures the ONU via OMCI upon recovery without re-triggering full reconciliation.
- Preserves GEM ports, alloc IDs, and ONU IDs to ensure stable reconnections.
- Skips redundant device/TP checks during rediscovery for faster recovery.
This enhancement reduces system overhead and improves performance in real-world deployments.
3. On-Demand Diagnostic Capabilities for ONU and OLT
VOLTHA 2.14 introduces new on-demand diagnostic capabilities, enabling operators to collect detailed statistics when troubleshooting. Supported stats include:
- GEM history data of ONU (from ONU and OLT).
- Ethernet bridge extended PM data.
- PON statistics.
- NNI statistics.
Additional Enhancements & Fixes
Improvements to Existing Features
- Third-party library updates across multiple components.
- Go version upgrade across the stack.
- Enhancements and refinements to improve stability and performance.
Why VOLTHA 2.14 Matters
The VOLTHA 2.14 release represents a major advancement in network operations and diagnostic capabilities. With multi-NNI support enabling more flexible network architectures, optimized ONU reboot processes reducing operational overhead, and comprehensive on-demand diagnostics improving troubleshooting efficiency, VOLTHA continues to strengthen its position as the leading open source solution for SDN-controlled broadband access networks.
These enhancements directly address operator needs for greater network flexibility, reduced operational complexity, and enhanced diagnostic capabilities, making VOLTHA 2.14 an essential upgrade for production deployments.
Learn more about VOLTHA and join the community at https://lfbroadband.org/projects/voltha/.
