From d0339aaabb95b5c59e9977288ea3af6a6b799188 Mon Sep 17 00:00:00 2001 From: medusa Date: Fri, 4 Oct 2024 20:16:19 +0000 Subject: [PATCH] Update work/den_job_prep.md --- work/den_job_prep.md | 163 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 163 insertions(+) diff --git a/work/den_job_prep.md b/work/den_job_prep.md index c9270df..34058b4 100644 --- a/work/den_job_prep.md +++ b/work/den_job_prep.md @@ -118,6 +118,169 @@ --- +# Data Center Deployment Scenarios with Cisco Nexus + +## 1. Traditional Three-Tier Architecture + +### Components: +- Access Layer: Nexus 9300 series +- Aggregation Layer: Nexus 7000 series +- Core Layer: Nexus 7000 or 9500 series + +### Key Considerations: +- VLAN design and distribution +- Spanning Tree Protocol configuration +- Inter-VLAN routing +- Layer 3 routing protocols (OSPF, EIGRP) +- Quality of Service (QoS) implementation +- Security features (ACLs, authentication) + +### Deployment Steps: +1. Physical installation and cabling +2. Initial switch configuration (hostnames, management IPs) +3. VLAN configuration and distribution +4. Spanning Tree Protocol optimization +5. Layer 3 routing configuration +6. Implementation of security policies +7. QoS configuration +8. Monitoring and management setup + +## 2. Spine-Leaf Architecture + +### Components: +- Leaf Switches: Nexus 9300 series +- Spine Switches: Nexus 9500 series +- Border Leaf: Nexus 9300 or 9500 series (for external connectivity) + +### Key Considerations: +- Equal-cost multi-path (ECMP) routing +- BGP EVPN for VXLAN overlay +- Underlay network design (IS-IS or OSPF) +- Multi-tenancy and network segmentation +- East-West traffic optimization +- Scalability and future growth + +### Deployment Steps: +1. Physical deployment of spine and leaf switches +2. Underlay network configuration (IP addressing, routing protocol) +3. Overlay network setup (VXLAN, EVPN) +4. BGP EVPN configuration on all switches +5. Multi-tenancy configuration (VRFs) +6. External connectivity setup on border leafs +7. Security policy implementation +8. Monitoring and telemetry configuration + +## 3. Cisco ACI Fabric + +### Components: +- Spine Switches: Nexus 9500 series with ACI-capable line cards +- Leaf Switches: Nexus 9300 series ACI-capable switches +- APICs (Application Policy Infrastructure Controllers) + +### Key Considerations: +- Application-centric policy model +- Tenant design and isolation +- Contracts and filters for security +- Integration with existing network infrastructure +- VMware vSphere or Microsoft Hyper-V integration +- Micro-segmentation capabilities + +### Deployment Steps: +1. Physical installation of ACI-capable switches and APICs +2. Initial APIC cluster configuration +3. Fabric discovery and registration +4. Tenant creation and VRF configuration +5. Application Network Profile design +6. EPG (Endpoint Group) and contract configuration +7. Integration with virtualization platforms +8. L4-L7 service integration (firewalls, load balancers) +9. External connectivity configuration (L3Out) + +## 4. Hybrid Cloud Deployment + +### Components: +- On-premises: Nexus 9000 series (for spine-leaf or traditional architecture) +- Cloud Connectivity: Nexus Cloud Services Platform or Cisco Cloud ACI +- Public Cloud: AWS, Azure, or Google Cloud + +### Key Considerations: +- Consistent policy across on-premises and cloud environments +- Secure connectivity between data center and cloud (VPN, Direct Connect) +- Network address translation and overlap handling +- Cloud-native services integration +- Hybrid cloud management and orchestration +- Disaster recovery and business continuity planning + +### Deployment Steps: +1. On-premises data center setup (following spine-leaf or ACI deployment) +2. Cloud network setup (VPCs, VNets, or VCNs depending on the cloud provider) +3. Establishment of secure connectivity (IPsec VPN or Direct Connect) +4. Configuration of routing between on-premises and cloud (BGP) +5. Implementation of consistent security policies +6. Setup of cloud-based disaster recovery site +7. Configuration of hybrid cloud management platform +8. Testing and validation of hybrid connectivity and applications + +## 5. Multi-Site Data Center Interconnect + +### Components: +- Site A and Site B: Nexus 9000 series in spine-leaf or ACI architecture +- DCI Links: High-bandwidth, low-latency connections (Dark Fiber, DWDM) +- Edge Devices: Nexus 9500 or ASR 9000 series for MPLS services + +### Key Considerations: +- Layer 2 extension technologies (OTV, VXLAN EVPN) +- Layer 3 DCI (LISP, MPLS VPN) +- Consistent policy across sites +- Disaster recovery and business continuity +- Traffic engineering and bandwidth management +- Data replication and synchronization + +### Deployment Steps: +1. Individual site deployment (spine-leaf or ACI) +2. DCI link establishment and configuration +3. Layer 2 extension setup (OTV or VXLAN EVPN) +4. Layer 3 routing between sites (BGP, OSPF) +5. Implementation of consistent security policies across sites +6. Configuration of traffic engineering and QoS across DCI +7. Setup of data replication and synchronization mechanisms +8. Disaster recovery and failover testing + +## 6. High-Performance Computing (HPC) Cluster + +### Components: +- Compute Nodes: High-performance servers +- Storage: High-speed, low-latency storage systems +- Interconnect: Nexus 9300 series with 100G/400G capabilities + +### Key Considerations: +- Ultra-low latency requirements +- High-bandwidth demands +- Specialized network protocols (RoCE, iWARP) +- Job scheduling and workload distribution +- Power and cooling management +- Monitoring and performance optimization + +### Deployment Steps: +1. Physical installation of HPC nodes and storage systems +2. High-speed interconnect deployment (Nexus 9300) +3. Configuration of low-latency features (cut-through switching, buffer tuning) +4. Setup of specialized protocols (RoCE, iWARP) +5. Integration with job scheduling and workload management systems +6. Implementation of monitoring and telemetry for performance analysis +7. Power and cooling optimization +8. Benchmarking and performance tuning + +For each scenario, consider: +- Scalability requirements +- Performance metrics and SLAs +- Security and compliance needs +- Operational management and monitoring +- Backup and disaster recovery strategies +- Future growth and technology evolution + +--- + 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.