VelocityDRIVE-SP-2026.03 Release Notes

1. 2026.03

Version:            2026.03
Previous Version:   2025.12     (yyyy.mm-cnt)
Release date:       2026-03-27  (yyyy-mm-dd)
Type:               Roadmap release
YANG Catalog SHA:   e6311dd5be50af0f0286fd3a6fb218a1

2. SerDes tuning: Board YANG and runtime actions added

Support for configuring and tuning SerDes (Serializer/Deserializer) parameters has been added. This allows optimization of signal quality for different board designs.

Two mechanisms are available:

  1. Runtime tuning actions via YANG (TX equalizer, RX CTLE, RX DFE, polarity). This is intended to be used during the board development phase to identify good parameters.

  2. Once a set of good parameters has been identified, then they need to be persisted in the board-config, which is applied during boot.

See SerDes Tuning guide for details.

3. DTLS: Access control changed from per-key to per-user

The CoAP access control rights (cc-rights, startup-config-rights, fw-rights, etc.) have been moved from the individual key entry to the user entry. This means all keys belonging to a given user share the same access rights, which are now configured once at the user level.

See this section of the CoAP configuration guide for details.

The purpose of this change is to make it simpler to replace an SSH key (first add a new key, confirm everything is working, then delete the old key).

This is a non-backwards-compatible change. Users who have already deployed DTLS will need to re-configure the user settings after this.

4. ACL: Redirect forwarding action added

A new forwarding action redirect has been added to the ACL rule configuration. Unlike the filtering action (which restricts the normal forwarding port mask), redirect replaces the forwarding port mask entirely with the configured egress-port-list.

See this section of the ACL configuration guide for details and an example.

5. MUP1: Optional CRC32 checksum support added

The MUP1 protocol now supports a configurable checksum type. In addition to the default 16-bit Internet checksum (RFC 1071), CRC32 (Ethernet polynomial) can now be selected. Both the host and device must use the same checksum type.

See this section of the MUP1 configuration guide for details.

6. MUP1: Ability to disable individual features added

Individual MUP1 protocol features (announce, coap, dtls, ping, trace) can now be selectively disabled at runtime without rebooting. This is useful for restricting the communication surface exposed over the serial management interface.

See this section of the MUP1 configuration guide for details.

7. DOC: List of included PHY and Switch drivers updated

The list of PHY drivers included in the SW variants has been updated to reflect the current set of supported PHYs.

The actual list of included PHY drivers has not changed since the last release, but the documentation was accidentally not updated until now.

8. 802.1Q: bridge-vlan/vlan list with name exposed via CORECONF

The bridge-vlan/vlan list from ieee802-dot1q-bridge has been included and is now accessible via CORECONF. Each entry is keyed by vid and has an optional name leaf. Currently the list can only be used to associate a name with a VLAN, and it is an optional setting (VLAN registration can still be used without this).