HP Network Topology Design

Network Architecture Overview

This document details the comprehensive network topology for HP enterprise infrastructure, including core, distribution, access layers, and advanced network services.

1. Network Design Principles

1.1 Hierarchical Model

1.2 Design Goals

2. Core Network Layer

2.1 Core Switch Configuration

HPE FlexFabric 12900E Core Switches (4 units)
├── CORE-SW-01 (Primary Site - Active)
├── CORE-SW-02 (Primary Site - Active)
├── CORE-SW-03 (Secondary Site - Active)
└── CORE-SW-04 (Secondary Site - Active)

Interconnection:
- 4x 400GbE links between each core switch pair
- IRF stacking for single logical switch
- VXLAN VTEP for overlay networking
- BGP EVPN for control plane

2.2 Core Network Services

3. Distribution Layer

3.1 Distribution Switch Pairs

Building A Distribution:
├── DIST-A-SW-01 (HPE 5940 - Primary)
├── DIST-A-SW-02 (HPE 5940 - Secondary)
└── VSF Stack with 4x 100GbE interconnect

Building B Distribution:
├── DIST-B-SW-01 (HPE 5940 - Primary)
├── DIST-B-SW-02 (HPE 5940 - Secondary)
└── VSF Stack with 4x 100GbE interconnect

Data Center Distribution:
├── DIST-DC-SW-01 (HPE 5940 - Primary)
├── DIST-DC-SW-02 (HPE 5940 - Secondary)
├── DIST-DC-SW-03 (HPE 5940 - Primary)
├── DIST-DC-SW-04 (HPE 5940 - Secondary)
└── VSF Stack pairs with 4x 100GbE interconnect

3.2 Distribution Layer Features

4. Access Layer

4.1 Data Center Access (Top-of-Rack)

Compute Rack Access:
├── Rack A1: Aruba 6300M (48x 25GbE + 4x 100GbE)
├── Rack A2: Aruba 6300M (48x 25GbE + 4x 100GbE)
├── Rack A3: Aruba 6300M (48x 25GbE + 4x 100GbE)
└── ... (continues for all compute racks)

Storage Rack Access:
├── Rack B1: Aruba 6300F (48x 10GbE SFP+ + 4x 100GbE)
├── Rack B2: Aruba 6300F (48x 10GbE SFP+ + 4x 100GbE)
└── ... (continues for all storage racks)

4.2 Campus Access

User Access Switches:
├── Floor 1: 12x Aruba 6200F (48x 1GbE PoE+ + 4x 10GbE)
├── Floor 2: 12x Aruba 6200F (48x 1GbE PoE+ + 4x 10GbE)
├── Floor 3: 8x Aruba 6200F (48x 1GbE PoE+ + 4x 10GbE)
└── Basement: 4x Aruba 6200M (24x 1GbE PoE++ + 4x 10GbE)

5. Network Segmentation

5.1 VLAN Design

Production VLANs:
├── VLAN 10: Management (10.0.10.0/24)
├── VLAN 20: Server Infrastructure (10.0.20.0/23)
├── VLAN 30: Storage Network (10.0.30.0/23)
├── VLAN 40: vMotion (10.0.40.0/24)
├── VLAN 50: Backup Network (10.0.50.0/24)
├── VLAN 100-199: User Segments (10.1.0.0/16)
├── VLAN 200-299: IoT/OT Devices (10.2.0.0/16)
├── VLAN 300-399: Guest Networks (10.3.0.0/16)
├── VLAN 400-499: DMZ Services (10.4.0.0/16)
└── VLAN 999: Quarantine (169.254.0.0/16)

5.2 VRF Design

Virtual Routing Instances:
├── VRF-PROD: Production traffic
├── VRF-MGMT: Management plane
├── VRF-GUEST: Guest isolation
├── VRF-DMZ: External services
└── VRF-BACKUP: Backup traffic isolation

6. Software-Defined Networking

6.1 VXLAN Overlay

VXLAN Configuration:
├── VNI 10010: Prod-Servers
├── VNI 10020: Prod-Users
├── VNI 10030: Dev-Environment
├── VNI 10040: Test-Environment
├── VNI 10050: DMZ-Services
└── Multicast Group: 239.1.1.0/24

6.2 SDN Controller

HPE Aruba Central:
├── Cloud-based management
├── Intent-based networking
├── API-driven automation
├── AI-powered insights
└── Multi-site orchestration

7. WAN Connectivity

7.1 Internet Edge

Primary ISP (ISP-A):
├── Connection: 10Gbps fiber
├── IP Block: 203.0.113.0/24
├── BGP AS: 65001
└── SLA: 99.99% uptime

Secondary ISP (ISP-B):
├── Connection: 10Gbps fiber
├── IP Block: 198.51.100.0/24
├── BGP AS: 65002
└── SLA: 99.95% uptime

7.2 WAN Design

Branch Connectivity:
├── Primary: MPLS 1Gbps per site
├── Secondary: SD-WAN overlay on internet
├── Tertiary: 4G/5G backup
└── Hub Sites: 10Gbps MPLS

Cloud Connectivity:
├── AWS: Direct Connect 10Gbps
├── Azure: ExpressRoute 10Gbps
├── GCP: Partner Interconnect 10Gbps
└── Oracle: FastConnect 1Gbps

8. Data Center Interconnect (DCI)

8.1 Layer 2 Extension

Between Primary and DR Sites:
├── Technology: VXLAN over IP
├── Bandwidth: 2x 100Gbps (Active-Active)
├── Encryption: MACsec 256-bit
├── Latency: <2ms RTT
└── Path: Diverse fiber routes

8.2 Storage Replication

Dedicated Storage Network:
├── Technology: Dark fiber
├── Bandwidth: 4x 32Gbps FC
├── Protocol: FC over DWDM
├── Latency: <1ms RTT
└── Encryption: FC-SP

9. Network Security

9.1 Perimeter Security

Firewall Architecture:
├── Internet Edge: HA pair of next-gen firewalls
├── Campus Edge: HA pair of next-gen firewalls
├── Data Center: East-West microsegmentation
├── DMZ: Dedicated firewall pair
└── IPS/IDS: Inline and out-of-band

Security Zones:
├── Untrusted: Internet facing
├── DMZ: Public services
├── Trusted: Internal users
├── Restricted: Servers/data
└── Management: Infrastructure

9.2 Network Access Control

Aruba ClearPass:
├── 802.1X for corporate devices
├── MAC auth for IoT devices
├── Guest self-registration
├── Posture assessment
├── Dynamic VLAN assignment
└── Integration with AD/LDAP

10. Load Balancing

10.1 Application Delivery

Global Server Load Balancing:
├── Primary Site: Active (70% traffic)
├── DR Site: Active (30% traffic)
├── Health Monitoring: Layer 4-7
├── SSL Offloading: 50Gbps capacity
└── WAF Integration: OWASP protection

10.2 Local Load Balancing

Service Distribution:
├── Web Tier: Round-robin with session persistence
├── App Tier: Least connections
├── Database: Read replica distribution
└── API Gateway: Rate-based limiting

11. Network Services

11.1 DHCP Design

DHCP Architecture:
├── Primary: Windows Server 2022 cluster
├── Secondary: Windows Server 2022 cluster
├── Failover: 80/20 split scope
├── Option 82: Relay agent information
└── Integration: DNS dynamic updates

11.2 DNS Architecture

DNS Hierarchy:
├── Internal Root: Hidden primary
├── Internal DNS: AD-integrated
├── External DNS: Split-brain design
├── Forwarding: Conditional and root hints
└── DNSSEC: Enabled for all zones

11.3 NTP Architecture

Time Synchronization:
├── Stratum 1: GPS time source
├── Stratum 2: Core switches
├── Stratum 3: Distribution layer
├── Stratum 4: Access and endpoints
└── Protocol: NTPv4 with authentication

12. Multicast Design

12.1 Multicast Routing

PIM Configuration:
├── RP: Anycast RP (10.0.1.1)
├── Mode: Sparse Mode (PIM-SM)
├── Source: Specific Multicast (SSM)
├── IGMP: Version 3 with snooping
└── Boundary: Scoped at distribution

12.2 Multicast Applications

Application Groups:
├── 239.1.0.0/16: Video streaming
├── 239.2.0.0/16: Market data
├── 239.3.0.0/16: System imaging
├── 239.4.0.0/16: Backup replication
└── 239.255.0.0/16: Local scope

13. QoS Design

13.1 Traffic Classification

Class Model:
├── EF: Voice (DSCP 46)
├── AF41: Video (DSCP 34)
├── AF31: Critical Data (DSCP 26)
├── AF21: Transactional (DSCP 18)
├── AF11: Bulk Data (DSCP 10)
├── CS1: Scavenger (DSCP 8)
└── BE: Best Effort (DSCP 0)

13.2 QoS Policies

Bandwidth Allocation:
├── Voice: 10% (strict priority)
├── Video: 30% (guaranteed)
├── Critical: 25% (guaranteed)
├── Transactional: 20% (guaranteed)
├── Bulk: 10% (minimum)
└── Best Effort: Remaining

14. Monitoring and Management

14.1 Network Monitoring

HPE IMC Platform:
├── Real-time topology
├── Performance metrics
├── Flow analysis
├── Configuration backup
├── Automated remediation
└── RESTful API

Third-Party Integration:
├── Splunk: Syslog analysis
├── ServiceNow: CMDB sync
├── Grafana: Custom dashboards
└── PagerDuty: Alert management

14.2 Network Analytics

Aruba NetInsight:
├── AI-powered anomaly detection
├── Predictive failure analysis
├── Capacity planning
├── User experience scoring
└── Automated troubleshooting

15. Disaster Recovery

15.1 Network DR Strategy

Failover Scenarios:
├── Site Failure: Automatic BGP reroute
├── ISP Failure: Sub-second convergence
├── Core Failure: IRF redundancy
├── Link Failure: LACP failover
└── Service Failure: Anycast failover

15.2 Recovery Procedures

Recovery Time Objectives:
├── Core Network: 50ms
├── Distribution: 200ms
├── Access Layer: 1 second
├── WAN Failover: 3 seconds
└── Full Site: 15 minutes

Network Topology Diagrams

Physical Topology

[Internet]
    |
[ISP-A]--[ISP-B]
    |        |
[FW-A]----[FW-B]
    |        |
[CORE-SW-01/02]---100G---[CORE-SW-03/04]
    |     |                    |     |
    |     +------200G DCI------+     |
    |                                |
[DIST-A/B]                    [DIST-C/D]
    |                                |
[ACCESS-SWITCHES]            [ACCESS-SWITCHES]
    |                                |
[END-POINTS]                 [END-POINTS]

Logical Topology

[VRF-PROD]    [VRF-MGMT]    [VRF-GUEST]
     |            |              |
[VXLAN-OVERLAY-NETWORK]
     |            |              |
[UNDERLAY-IP-NETWORK]
     |
[PHYSICAL-INFRASTRUCTURE]

This comprehensive network design provides a robust, scalable, and secure foundation for enterprise operations with HP networking equipment.