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# Cisco Nexus Technical Preparation Guide
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## 1. Nexus Hardware Platforms
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- Nexus 9000 Series (9300, 9500)
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- Nexus 7000 Series
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- Nexus 5000/6000 Series
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- Differences and use cases for each platform
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## 2. NX-OS Operating System
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- NX-OS architecture and features
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- Command-line interface (CLI) and configuration basics
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- NX-OS software upgrade procedures
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- High availability features (ISSU, VSS, vPC)
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## 3. Layer 2 Technologies
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- VLANs and VLAN Trunking Protocol (VTP)
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- Spanning Tree Protocol variations (RPVST+, MST)
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- Link Aggregation (LACP)
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- Virtual Port Channel (vPC) configuration and troubleshooting
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- FabricPath and TRILL
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## 4. Layer 3 Routing
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- Static routing
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- Dynamic routing protocols (OSPF, EIGRP, BGP)
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- First Hop Redundancy Protocols (HSRP, VRRP)
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- VRF-lite and MPLS VPN support
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## 5. Data Center Fabric Technologies
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- VXLAN overview and configuration
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- EVPN for VXLAN
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- Cisco FabricPath
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- Overlay Transport Virtualization (OTV)
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## 6. Nexus Specific Features
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- Virtual Device Contexts (VDC)
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- Fabric Extender (FEX) technology
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- Cisco Dynamic Fabric Automation (DFA)
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- Nexus Converged Fabric
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## 7. Quality of Service (QoS)
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- Classification and marking
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- Policing and shaping
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- Queuing and scheduling
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- QoS policy implementation on Nexus switches
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## 8. Security Features
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- Access Control Lists (ACLs)
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- Authentication, Authorization, and Accounting (AAA)
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- Control Plane Policing (CoPP)
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- Port Security
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- DHCP snooping and Dynamic ARP Inspection
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## 9. Monitoring and Troubleshooting
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- SPAN and ERSPAN configuration
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- NetFlow implementation
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- SNMP and syslog configuration
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- Embedded Event Manager (EEM)
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- Packet capture techniques
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## 10. Data Center Network Design
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- Spine-leaf architecture implementation with Nexus switches
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- Oversubscription ratios and capacity planning
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- Traffic flow optimization in a Nexus-based data center
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- High availability design considerations
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## 11. Virtualization Integration
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- VMware vSphere integration (VEM, DVS)
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- Microsoft Hyper-V network virtualization support
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- Network containerization technologies (e.g., Cisco Contiv)
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## 12. Automation and Programmability
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- NX-API REST and NX-API CLI
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- Python scripting for Nexus automation
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- Ansible playbooks for Nexus configuration
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- NETCONF/YANG model usage
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## 13. Cisco Application Centric Infrastructure (ACI) Integration
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- ACI fabric access policies for Nexus switches
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- Migrating from traditional Nexus environments to ACI
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- ACI Multi-Pod and Multi-Site with Nexus spines
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## 14. Performance and Scalability
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- Nexus switch performance characteristics
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- Forwarding Information Base (FIB) and TCAM utilization
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- Buffer management and microburst handling
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- Load balancing algorithms and configuration
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## 15. Emerging Technologies
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- Intent-based networking on Nexus platforms
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- Integration with Cisco DNA Center
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- Edge computing support in Nexus switches
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- AI/ML applications in Nexus-based networks
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## 16. Compliance and Standards
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- Data center compliance requirements (PCI DSS, HIPAA)
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- Implementation of network segmentation for compliance
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- Industry standards support (IEEE, IETF)
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## 17. Interoperability
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- Working with multi-vendor environments
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- Integration with legacy network infrastructures
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- Cloud connectivity options (AWS Direct Connect, Azure ExpressRoute)
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## 18. Disaster Recovery and Business Continuity
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- Data center interconnect (DCI) solutions using Nexus
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- Configuration backup and restore procedures
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- Failure scenario planning and mitigation strategies
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## 19. Green Data Center Initiatives
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- Power efficiency features in Nexus switches
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- Environmental monitoring and reporting
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- Sustainable networking practices
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## 20. Case Studies and Scenarios
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- Large-scale Nexus deployments in enterprise environments
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- Troubleshooting complex issues in Nexus-based networks
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- Migration strategies from older platforms to Nexus 9000
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---
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1. ACI shifts the focus from network-centric to application-centric configurations:
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1. ACI shifts the focus from network-centric to application-centric configurations:
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- Traditional networking focuses on configuring individual network devices (switches, routers) and protocols.
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- Traditional networking focuses on configuring individual network devices (switches, routers) and protocols.
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- ACI instead focuses on the applications and their requirements, abstracting away much of the underlying network complexity.
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- ACI instead focuses on the applications and their requirements, abstracting away much of the underlying network complexity.
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