Data Center Network Architecture Brief
Comprehensive Topology Analysis & Hardware Specifications
Network Topology Diagram
Executive Summary
The network topology represents a high-availability, fault-tolerant Data Center infrastructure designed with full redundant pathing across all network layers (Edge, Aggregation, Security, Core L3, ADC, and Access layers). High availability (HA) and virtualization techniques such as IRF (Intelligent Resilient Framework) and active-passive/active-active firewall clustering are leveraged to eliminate single points of failure.
Hardware Component Breakdown
| Layer / Role | Device Hostname | Hardware / Model | Port Interconnect Highlights |
|---|---|---|---|
| Edge Routers | DC_CH_R#1, DC_CH_R#2 | HPE MSR 3026 | XGe0/20-21 (Inter-router), Ge0/15, XGe0/19 uplinks/downlinks |
| Aggregation Switches | DC_CH_L2#1, DC_CH_L2#2 | HPE 5520 24G | XGe1/0/25, XGe1/0/27, XGe1/0/28, XGe1/0/26 |
| Next-Gen Firewalls | DC_CH_FW#1, DC_CH_FW#2 | Fortinet FortiGate 200P (FG-200P) | X3 (Upstream), X4/X1 (Downstream), Dedicated HA link |
| Core L3 Switches | DC_CH_L3#1, DC_CH_L3#2 | HPE 5770 24SPP+ | XGe1/0/19, XGe1/0/20, XGe1/0/21, XGe1/0/22, XGe1/0/23, XGe1/0/24 |
| Load Balancers (ADC) | DC_CH_L4#1, DC_CH_L4#2 | F5 BIG-IP i4600 | Port 1.0, Port 7.0, Port 8.0 connected to Core L3 switches |
| Access / Base Switches | DC_CH_L3#1, DC_BB_L2#2 | HPE 5945 / HPE 5845 (IRF Stacked) | WGe1/1/24, WGe2/1/24, WGe2/1/3 cross-stack IRF links |
| QA Server Switch | DC_GA-CH_L2 | HPE 5520 24G | XGe1/0/27, XGe1/0/28 uplinks, Ge1/0/1-4 server access |
VLAN & IP Subnet Scheme
| VLAN ID | Subnet CIDR | Description / Segment Role |
|---|---|---|
| VID 396 | 172.29.33.96 /29 | Edge Router to Aggregation Switch Interconnect Subnet |
| VID 404 | 172.29.33.104 /29 | Aggregation Switch to Firewall Northbound Subnet |
| VID 412 | 172.28.33.112 /28 | Firewall Southbound to Core L3 Switch Subnet |
| VID 428 | 172.29.33.128 /28 | Core L3 Switch to Access IRF Stack Transit Subnet |
| VID 43 | 172.29.45.0 /24 | QA Server Segment (DC_QA-CH_Server) |
| VID 42 | 172.29.43.0 /24 | Production Server Segment (DC_CH_Server) |
Physical Cabling & Routing Logic
Cable Standard Legend
- 10G SFP+: High-bandwidth backbone fiber connections between Core switches, FW, and Routers.
- 1G SFP: Fiber uplinks for secondary aggregation and server switches.
- 10G RJ-45: High-speed copper lines for F5 ADC load balancer connections.
- 1G RJ-45: Standard copper ethernet links for compute nodes and management.
Traffic Routing Protocol Legend
- Default Routing (Blue Arrows): Upstream gateway traffic directing internal subnets (VID 42, VID 43) towards the WAN edge.
- Static Routing (Orange Arrows): Explicit path routing defined between Core L3 switches and IRF Access layers across VID 428.