April 2026 monthly summary for sonic-mgmt (repo sonic-net/sonic-mgmt). The primary focus was stabilizing QoS DSCP Mapping tests and improving CI reliability. Delivered a targeted test-harness fix to disable Loganalyzer for test_qos_dscp_mapping, preventing warm-reboot related failures and spurious logparser interference. This reduced flaky test results, shortened feedback cycles, and strengthened QoS coverage signals. Implementation tied to commit a4d7e636cb1631318705dc52f38df0fccd76de0a and aligned with a backport plan to 202511 to ensure consistency across release branches.

March 2026 monthly summary for two repositories (sonic-mgmt and sonic-buildimage). Focused on strengthening test infrastructure, improving IPv6 coverage, and stabilizing platform configurations to deliver higher quality releases and faster feedback for hardware-specific scenarios.

February 2026 (2026-02) focused on stabilizing and expanding the sonic-mgmt test suite for production readiness. Key features delivered include reliability and coverage improvements for Portchannel and LAG tests in the t1-f2-d10u8 topology, IPv6 testing enhancements across ACL, TACACS, and topology validation, and broader test framework utilities to improve consistency and reusability. Major bugs fixed targeted test stability and reliability in BGP workflows and packet parsing, including noise handling in suppression tests, parallel_run stability checks, and Scapy-based parsing adjustments for newer base images. Hardware SKU coverage was extended to TH5 to prevent feature-unsupported failures. These efforts delivered faster feedback loops, reduced flaky tests, and stronger validation across both IPv4 and IPv6 scenarios, supporting more reliable deployments and higher confidence in release readiness. Notable commits include: dd20b3a25f77440f9d46d0d9c7fc9f64479e8802; 5a851729d8bac6e99bab7e9aee55ed9dda4d7abe; 4b4f386e892f03511ae22a2b9f555ba169d957de; 0ad079a194e883fe9c55cc891f016a1394aa756b; 2d7f5f8168d589eb51cf19084c31e19dba0249ea; add3383fe375c477acb796699c92410b39ec96cd; f8cc11c4c959db42f31f5591f77967164171e564; fb5a98bc2f08c2cd8dba9db5236981a95559498e; 490e6fa3e3c5865ce5864f0729639b060751baa3; 640e40e33386a1efd3c73ff6128614d31be19227; 3057d07c4a008fffa3b0ff61bf0cd6f823215173; 4062a17fc77c6d38783e87b7d5452d8527bc08fb

January 2026: Delivered substantial IPv6 coverage and stability improvements for sonic-mgmt. Implemented IPv6 Testing Framework Enhancements, expanding BGP, VxLAN, Telemetry, decap, and IPv6-only/topology variations with memory-assertion handling. Added IPv6-focused fixtures and test adjustments to ensure reliable IPv6 testing and avoid IPv4 regressions in IPv6 environments. Fixed robustness issues in loganalyzer and topology configuration to reduce noise and ensure correct router behavior. Overall impact: broader IPv6 validation, fewer flaky CI runs, and faster feedback to developers. Technologies demonstrated: Python-based test automation, pytest, IPv6 networking concepts, CI/test infra, and topology management.

December 2025 monthly summary for sonic-mgmt: Delivered IPv6 BGP testing framework support to enable robust IPv6 topology validation within the existing test suite. Implementations include skipping IPv4 checks for IPv6 topologies, IPv6-compatible DUT/PTF commands, parsing of IPv6 BGP packets, and router ID generation for IPv6 neighbors derived from their addresses. Fixed setup_interfaces fixture and related BGP tests for v6 topology, addressing failures across test_bgp_update_timer.py, test_bgp_peer_shutdown.py, test_traffic_shift.py, and test_bgp_allow_list.py. Commit: d3201b3e517df4ffb90364fb87a263899a7a0d42. This work improves test coverage, reliability, and confidence in dual-stack deployments, enabling safer rollout of IPv6 features with faster feedback in CI. Achieved with Python scripting, test framework enhancements, Scapy parsing adjustments, and IPv6 addressing logic.

November 2025: Delivered a critical IPv6 handling fix for the gNMI client in sonic-buildimage, stabilizing management-plane telemetry in IPv6 environments and improving CI reliability. Implemented a gnxi library patch in the PTF container and updated py_gnmicli.py to format [IPv6]:port for gRPC correctly, reducing test failures.

October 2025: Key stability and reliability improvements across FRRouting (FRR), Sonic test infrastructure, and build tooling, focused on reducing unplanned downtime, accelerating validation cycles, and improving CI reliability. Deliverables centered on robust interface management, deterministic test behavior on complex topologies, and safeguard changes to COPP-heavy scenarios.

September 2025 monthly summary for sonic-net/sonic-mgmt: Delivered a stability-focused fix to standardize COPP rate limiting across test topologies and verified through end-to-end tests, strengthening CI reliability and cross-topology consistency. Key deliverables included updating PPS_LIMIT to 300 on the m1 topology to align with m0/mx for DHCP, DHCP6, LLDP, and UDLD tests; the change is implemented in commit 8a80b769d9eb67e0ff028753c6c5b67bb9619c0a (Set PPS_LIMIT to 300 on LLDP/UDLD/DHCP COPP test for m1 topology (#20434)); Verified by running test_copp.py for m1 topologies.