# A5 — Network Architecture

**Project:** Kingsford Hotel Bacolod — BMS
**Date:** 2026-04-28

## Topology

The BMS runs on an isolated /24 LAN segregated from the customer corporate LAN. A 24-port managed L2/L3 core switch lives in the GF server room; edge switches at each riser zone connect to the core via OM3 multimode fiber (6-strand, armored). Field panels uplink to their nearest edge switch via Cat6 (BACnet/IP). MS/TP backbone interconnects panel controllers within each zone.

- Core: 1× managed L2/L3 24-port + 4× SFP (BACnet routing, VLAN, SNMP)
- Edge: 3× 16-port + 3× 8-port managed L2 (per riser zone)
- Riser fiber: ~300 m OM3 6-strand armored
- Cat6: ~700 m drops + trunk
- IDF closets: 6 wall-mount enclosures

## Topology — visual

```mermaid
graph TD
  HEADEND[Server Room - GF<br/>BMS Server primary+standby<br/>UPS · Workstations · Graphics PC]
  CORE[Core Switch - GF<br/>24-port + 4 SFP]
  HEADEND --> CORE
  subgraph Roofdeck
    SW_RD[Edge Switch RD]
    PNL_RD[PNL-RD]
    SW_RD --> PNL_RD
  end
  subgraph 3F
    SW_3F[Edge Switch 3F]
    PNL_3F[PNL-3F]
    SW_3F --> PNL_3F
  end
  subgraph 2F
    SW_2F[Edge Switch 2F]
    PNL_2F[PNL-2F]
    PNL_BOH[PNL-BOH-2F]
    SW_2F --> PNL_2F
    SW_2F --> PNL_BOH
  end
  subgraph GF
    PNL_GF[PNL-GF]
    PNL_HE[PNL-HE-GF]
    CORE --> PNL_GF
    CORE --> PNL_HE
  end
  subgraph Basement
    SW_BSMT[Edge Switch BSMT]
    PNL_BSMT[PNL-BSMT]
    PNL_PLANT[PNL-CHPLANT-GND]
    SW_BSMT --> PNL_BSMT
    SW_BSMT --> PNL_PLANT
  end
  CORE -->|OM3 fiber| SW_RD
  CORE -->|OM3 fiber| SW_3F
  CORE -->|OM3 fiber| SW_2F
  CORE -->|OM3 fiber| SW_BSMT
```

## Switch schedule

| ID | Type | Location | Ports | Uplink |
|----|------|----------|-------|--------|
| SW-CORE | L2/L3 24-port | Server Room GF | 24×Cu + 4×SFP | — |
| SW-RD | L2 16-port | Roofdeck IDF | 16×Cu + 2×SFP | OM3 to core |
| SW-3F | L2 8-port | 3F IDF | 8×Cu + 2×SFP | OM3 to core |
| SW-2F | L2 16-port | 2F IDF | 16×Cu + 2×SFP | OM3 to core |
| SW-BSMT | L2 16-port | Basement IDF | 16×Cu + 2×SFP | OM3 to core |
| SW-BOH | L2 8-port | BOH-2F | 8×Cu + 2×SFP | Cat6 to SW-2F |
| SW-GF | L2 8-port | GF | 8×Cu + 2×SFP | Cat6 to core |

7 switches; 6 IDF wall-mount enclosures (one per riser zone except GF).