srl-labs/containerlab
Nov 2025 – Jun 2026
7 Months active
Languages Used
GoRobot FrameworkYAMLMarkdownJSON
Technical Skills
AnsibleContainerizationDockerGoGo programmingNetwork Configuration
Sergio Chavez
PROFILE
Sergio Chavez
Worked on the srl-labs/containerlab repository, delivering features and enhancements focused on network simulation, configuration management, and schema evolution for Nokia SR OS and SR Linux environments. Applied Go and YAML to implement versioned configuration parsing, automated image labeling, and variant-based configuration flows, improving deployment reliability and maintainability. Extended schema support for SAR hardware, introduced hardware model aliases, and enhanced documentation clarity around licensing and resource access. Emphasized robust data validation, modular backend development, and testing automation to reduce misconfiguration risk and streamline integration. Collaborated across teams, ensuring changes were well-documented, traceable, and aligned with evolving product and customer requirements.
Overall Statistics
Feature vs Bugs
92%Features
Repository Contributions
12Total
Bugs
1
Commits
12
Features
11
Lines of code
5,627
Activity Months7
Your Network
104 peopleSame Organization
@nokia.com35
Work History
June 2026
1 Commits • 1 Features
Jun 1, 2026June 2026 monthly sprint focused on documentation hygiene and licensing clarity for Nokia platforms within the containerlab product. Delivered a targeted documentation update to reflect current licensing requirements: removed an outdated licensing note, clarified that a license is still required but is not provided as part of the product. This aligns customer expectations with product policy and reduces support friction related to Nokia licensing.
1 Commits • 1 Features
Jun 1, 2026June 2026 monthly sprint focused on documentation hygiene and licensing clarity for Nokia platforms within the containerlab product. Delivered a targeted documentation update to reflect current licensing requirements: removed an outdated licensing note, clarified that a license is still required but is not provided as part of the product. This aligns customer expectations with product policy and reduces support friction related to Nokia licensing.
June 2026
May 2026
1 Commits • 1 Features
May 1, 2026May 2026 monthly summary for srl-labs/containerlab. Delivered feature to enhance SAR box interoperability by extending the containerlab schema to recognize 'sar-hx' and 'sar-mx'. This work aligns with PR #3184 and is backed by commit f0d3f73d71f09a75f80a786c325e8ab51dc44345. No major bugs fixed this month; focus was on schema evolution and robust integration. Impact includes reduced integration effort for SAR hardware, faster validation, and improved schema reliability. Demonstrates proficiency in schema design, PR-driven development, and cross-team collaboration in a containerized lab tooling context.
May 2026
1 Commits • 1 Features
May 1, 2026May 2026 monthly summary for srl-labs/containerlab. Delivered feature to enhance SAR box interoperability by extending the containerlab schema to recognize 'sar-hx' and 'sar-mx'. This work aligns with PR #3184 and is backed by commit f0d3f73d71f09a75f80a786c325e8ab51dc44345. No major bugs fixed this month; focus was on schema evolution and robust integration. Impact includes reduced integration effort for SAR hardware, faster validation, and improved schema reliability. Demonstrates proficiency in schema design, PR-driven development, and cross-team collaboration in a containerized lab tooling context.
April 2026
2 Commits • 2 Features
Apr 1, 2026Concise monthly summary for 2026-04 focusing on key features delivered, major bugs fixed, overall impact, and technologies demonstrated for the srl-labs/containerlab repository. Highlights include: 1) YANG browser site banner updated to point to the official Nokia YANG browser site, improving visibility of documentation and reducing time-to-resource access; 2) Topology alias ixr-x4-d introduced (ixr-x4 alias) to unify configuration behavior and reduce user confusion. No explicit critical bug fixes were recorded this month in the provided data; the focus was on feature delivery and usability enhancements.
2 Commits • 2 Features
Apr 1, 2026Concise monthly summary for 2026-04 focusing on key features delivered, major bugs fixed, overall impact, and technologies demonstrated for the srl-labs/containerlab repository. Highlights include: 1) YANG browser site banner updated to point to the official Nokia YANG browser site, improving visibility of documentation and reducing time-to-resource access; 2) Topology alias ixr-x4-d introduced (ixr-x4 alias) to unify configuration behavior and reduce user confusion. No explicit critical bug fixes were recorded this month in the provided data; the focus was on feature delivery and usability enhancements.
April 2026
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026: Delivered two major feature enhancements in srl-labs/containerlab, focusing on SR-SIM deployment fidelity and SR Linux hardware model coverage. Implemented chassis_info extraction from node images and synchronization to lab directories, plus added support for IXR-X4 and SXR-1-32D models, with documentation updates and licensing compliance. These changes reduce deployment setup time and enable management of newer hardware types, improving overall lab automation and reliability.
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026: Delivered two major feature enhancements in srl-labs/containerlab, focusing on SR-SIM deployment fidelity and SR Linux hardware model coverage. Implemented chassis_info extraction from node images and synchronization to lab directories, plus added support for IXR-X4 and SXR-1-32D models, with documentation updates and licensing compliance. These changes reduce deployment setup time and enable management of newer hardware types, improving overall lab automation and reliability.
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for srl-labs/containerlab. Delivered Nokia SRSIM Configuration Management Simplification with a variant-based flow and restructured configuration sources to improve maintainability. Implemented image-type validation for node kind to prevent misconfigurations and enhance reliability. All changes preserved topology and runtime compatibility while reducing configuration duplication and deployment risk. Demonstrated strong templating, modularization, and validation capabilities with clear traceability to commits.
2 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for srl-labs/containerlab. Delivered Nokia SRSIM Configuration Management Simplification with a variant-based flow and restructured configuration sources to improve maintainability. Implemented image-type validation for node kind to prevent misconfigurations and enhance reliability. All changes preserved topology and runtime compatibility while reducing configuration duplication and deployment risk. Demonstrated strong templating, modularization, and validation capabilities with clear traceability to commits.
February 2026
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Key feature delivered in srl-labs/containerlab to enable reliable, automated version retrieval for SR-SIM container images beyond 25.10.R1. Implemented image labeling (title, vendor, version) to improve accuracy, reduce manual lookups, and accelerate deployment pipelines. This enhances image governance and deployment reliability. No major bugs fixed this month; changes were reviewed, tested, and integrated, with collaboration acknowledged in the commit.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Key feature delivered in srl-labs/containerlab to enable reliable, automated version retrieval for SR-SIM container images beyond 25.10.R1. Implemented image labeling (title, vendor, version) to improve accuracy, reduce manual lookups, and accelerate deployment pipelines. This enhances image governance and deployment reliability. No major bugs fixed this month; changes were reviewed, tested, and integrated, with collaboration acknowledged in the commit.
November 2025
3 Commits • 3 Features
Nov 1, 2025November 2025 monthly summary for srl-labs/containerlab focusing on SR-SIM deliverables. This period delivered concrete features and stability improvements that enhance multi-version SR OS support, CLI usability, and run-time performance, driving business value through improved deployment reliability, faster issue resolution, and cleaner code.
3 Commits • 3 Features
Nov 1, 2025November 2025 monthly summary for srl-labs/containerlab focusing on SR-SIM deliverables. This period delivered concrete features and stability improvements that enhance multi-version SR OS support, CLI usability, and run-time performance, driving business value through improved deployment reliability, faster issue resolution, and cleaner code.
November 2025
Activity
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Quality Metrics
Correctness96.6%
Maintainability90.0%
Architecture91.6%
Performance90.0%
AI Usage30.0%
Skills & Technologies
Programming Languages
GoJSONMarkdownRobot FrameworkYAML
Technical Skills
API developmentAnsibleContainerizationDevOpsDockerGoGo programmingJSONNetwork ConfigurationYAML configurationbackend developmentconfiguration managementcontainerizationdata validationdocumentation
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