Cisco SD-Access & ISE Design and Implementation Guide¶

AI-Assisted Documentation

End-to-end design, security, implementation, operations, and migration for an enterprise Cisco Catalyst Center (DNAC) and Identity Services Engine (ISE) SD-Access fabric.

Author: Rajmohan M Website: abhavtech.com

About This Documentation¶

This guide covers a global multi-site SD-Access deployment — fabric design, ISE policy and segmentation, firewall insertion, implementation runbooks, operations, and the migration business case. It is organised into seven chapters plus a consolidated design-references section and appendices.

Target audience: Network architects, security engineers, and operations teams deploying Cisco SD-Access with ISE.

Technology stack: Cisco Catalyst Center (DNAC), Identity Services Engine (ISE), Catalyst 9000 fabric nodes, with SD-WAN fabric handoff.

Disclaimer

This documentation is developed for knowledge-sharing purposes and is not intended for production deployments. It may contain errors, and vendor features or platform capabilities may have changed or been upgraded since publishing. Always validate designs against current Cisco documentation and your own environment before implementation.

Documentation Sections¶

Discovery & Assessment ¶

Current-state inventory, technical requirements, gap and risk analysis, readiness assessment, and success criteria.

Design ¶

Fabric architecture, hub and branch design, underlay and overlay, LISP control plane, DNA Center and ISE design, SD-WAN integration, wireless, and sizing.

Network & Security ¶

Security architecture, ISE policy and segmentation, 802.1X, profiling, firewall integration, zero-trust, encryption, and compliance.

Implementation ¶

Cluster installation, ISE distributed deployment, underlay provisioning, fabric configuration, wireless integration, SD-WAN handoff, testing, cutover, and rollback.

Operations ¶

Assurance monitoring, alerting, incident and change management, capacity planning, troubleshooting, backup and recovery, and HA failover.

Migration & Financials ¶

Migration strategy, legacy decommissioning, license mapping, TCO and ROI analysis, budget planning, and the business case.

Advanced Features ¶

AI/ML analytics, automation, REST APIs, SD-WAN integration, Stealthwatch and ThousandEyes, SASE, Cisco XDR, and AI-enhanced RRM.

Design Guides ¶

Consolidated design references — capacity planning and hardware sizing, firewall insertion design, structured design data, and deployment planning guides and templates.

Appendices ¶

Glossary, CLI quick reference, port reference, IP allocation, hardware bill of materials, and references.

AI-Assisted Documentation Disclaimer¶

This documentation was developed with assistance from Claude (Anthropic) as part of the AbhavTech technical documentation portfolio. Content reflects real-world enterprise SD-Access and ISE deployment patterns.