From e1012a97d842ac65102312fce6f5bb2a1e5be9c6 Mon Sep 17 00:00:00 2001
From: medusa <newton214@gmail.com>
Date: Fri, 4 Oct 2024 20:13:49 +0000
Subject: [PATCH] Update work/den_job_prep.md

---
 work/den_job_prep.md | 120 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)

diff --git a/work/den_job_prep.md b/work/den_job_prep.md
index 54cc617..c9270df 100644
--- a/work/den_job_prep.md
+++ b/work/den_job_prep.md
@@ -1,3 +1,123 @@
+# Cisco Nexus Technical Preparation Guide
+
+## 1. Nexus Hardware Platforms
+- Nexus 9000 Series (9300, 9500)
+- Nexus 7000 Series
+- Nexus 5000/6000 Series
+- Differences and use cases for each platform
+
+## 2. NX-OS Operating System
+- NX-OS architecture and features
+- Command-line interface (CLI) and configuration basics
+- NX-OS software upgrade procedures
+- High availability features (ISSU, VSS, vPC)
+
+## 3. Layer 2 Technologies
+- VLANs and VLAN Trunking Protocol (VTP)
+- Spanning Tree Protocol variations (RPVST+, MST)
+- Link Aggregation (LACP)
+- Virtual Port Channel (vPC) configuration and troubleshooting
+- FabricPath and TRILL
+
+## 4. Layer 3 Routing
+- Static routing
+- Dynamic routing protocols (OSPF, EIGRP, BGP)
+- First Hop Redundancy Protocols (HSRP, VRRP)
+- VRF-lite and MPLS VPN support
+
+## 5. Data Center Fabric Technologies
+- VXLAN overview and configuration
+- EVPN for VXLAN
+- Cisco FabricPath
+- Overlay Transport Virtualization (OTV)
+
+## 6. Nexus Specific Features
+- Virtual Device Contexts (VDC)
+- Fabric Extender (FEX) technology
+- Cisco Dynamic Fabric Automation (DFA)
+- Nexus Converged Fabric
+
+## 7. Quality of Service (QoS)
+- Classification and marking
+- Policing and shaping
+- Queuing and scheduling
+- QoS policy implementation on Nexus switches
+
+## 8. Security Features
+- Access Control Lists (ACLs)
+- Authentication, Authorization, and Accounting (AAA)
+- Control Plane Policing (CoPP)
+- Port Security
+- DHCP snooping and Dynamic ARP Inspection
+
+## 9. Monitoring and Troubleshooting
+- SPAN and ERSPAN configuration
+- NetFlow implementation
+- SNMP and syslog configuration
+- Embedded Event Manager (EEM)
+- Packet capture techniques
+
+## 10. Data Center Network Design
+- Spine-leaf architecture implementation with Nexus switches
+- Oversubscription ratios and capacity planning
+- Traffic flow optimization in a Nexus-based data center
+- High availability design considerations
+
+## 11. Virtualization Integration
+- VMware vSphere integration (VEM, DVS)
+- Microsoft Hyper-V network virtualization support
+- Network containerization technologies (e.g., Cisco Contiv)
+
+## 12. Automation and Programmability
+- NX-API REST and NX-API CLI
+- Python scripting for Nexus automation
+- Ansible playbooks for Nexus configuration
+- NETCONF/YANG model usage
+
+## 13. Cisco Application Centric Infrastructure (ACI) Integration
+- ACI fabric access policies for Nexus switches
+- Migrating from traditional Nexus environments to ACI
+- ACI Multi-Pod and Multi-Site with Nexus spines
+
+## 14. Performance and Scalability
+- Nexus switch performance characteristics
+- Forwarding Information Base (FIB) and TCAM utilization
+- Buffer management and microburst handling
+- Load balancing algorithms and configuration
+
+## 15. Emerging Technologies
+- Intent-based networking on Nexus platforms
+- Integration with Cisco DNA Center
+- Edge computing support in Nexus switches
+- AI/ML applications in Nexus-based networks
+
+## 16. Compliance and Standards
+- Data center compliance requirements (PCI DSS, HIPAA)
+- Implementation of network segmentation for compliance
+- Industry standards support (IEEE, IETF)
+
+## 17. Interoperability
+- Working with multi-vendor environments
+- Integration with legacy network infrastructures
+- Cloud connectivity options (AWS Direct Connect, Azure ExpressRoute)
+
+## 18. Disaster Recovery and Business Continuity
+- Data center interconnect (DCI) solutions using Nexus
+- Configuration backup and restore procedures
+- Failure scenario planning and mitigation strategies
+
+## 19. Green Data Center Initiatives
+- Power efficiency features in Nexus switches
+- Environmental monitoring and reporting
+- Sustainable networking practices
+
+## 20. Case Studies and Scenarios
+- Large-scale Nexus deployments in enterprise environments
+- Troubleshooting complex issues in Nexus-based networks
+- Migration strategies from older platforms to Nexus 9000
+
+---
+
 1. ACI shifts the focus from network-centric to application-centric configurations:
    - Traditional networking focuses on configuring individual network devices (switches, routers) and protocols.
    - ACI instead focuses on the applications and their requirements, abstracting away much of the underlying network complexity.