# A5 — Network Architecture & Switch Schedule **Project:** Kingsford Hotel Bacolod BMS **Date prepared:** 2026-04-27 **Source:** A-007 (isolated BMS LAN) · A4 panel schedule · BMS general spec on BMS-01 --- ## Topology Star-and-tree topology centered on the **BMS Server Room core switch**, with riser fiber to floor/zone edge switches, and Cat6 drops to BMS panels and BACnet/IP equipment. ![A5 — BMS Network Architecture](A5-network.png) *Horizontal-orientation diagram — used in both the comprehensive proposal PDF and the internal PPTX. Auto-rendered from the mermaid below by `_playbook/tools/render-mermaid.py` per the visualize-network-architecture sub-routine. Source-of-truth is the mermaid; the PNG regenerates on every deliverables run.* ```mermaid graph TD subgraph "BMS Server Room (head-end)" SVR1[BMS Server Primary] SVR2[BMS Server Standby] WS1[Operator WS1] WS2[Operator WS2] GFX[Graphics PC + Display] PRT[Color Laser Printer] CORE[Core Switch
24-port managed L2/L3] UPLINK[Customer LAN
1 Gbps uplink] SVR1 --- CORE SVR2 --- CORE WS1 --- CORE WS2 --- CORE GFX --- CORE PRT --- CORE CORE --- UPLINK end CORE === FBR_LZ[Riser fiber
OM3 multimode] CORE === FBR_GND CORE === FBR_2F CORE === FBR_3F CORE === FBR_RD subgraph "Lower Ground" SW_LZ[Edge Switch LZ
8-port] PNL_PL_LZ[PNL-PL-LZ] PNL_BL_LZ[PNL-BL-LZ] SW_LZ --- PNL_PL_LZ SW_LZ --- PNL_BL_LZ end FBR_LZ --- SW_LZ subgraph "Ground Floor" SW_GND[Edge Switch GND
16-port] PNL_CH[PNL-CH-PLANT-GND] PNL_BOH[PNL-CHWP-GND] PNL_VGF[PNL-VENT-GF] PNL_EM[PNL-EE-MAIN] CH1[Chiller 1 BACnet] CH2[Chiller 2 BACnet] CH3[Chiller 3 BACnet] SW_GND --- PNL_CH SW_GND --- PNL_BOH SW_GND --- PNL_VGF SW_GND --- PNL_EM SW_GND --- CH1 SW_GND --- CH2 SW_GND --- CH3 end FBR_GND --- SW_GND subgraph "2nd Floor" SW_2F[Edge Switch 2F
16-port] PNL_CHWP[PNL-CHWP-L2] PNL_V2[PNL-VENT-L2] PNL_AHU[PNL-AHU-L2] PNL_DOAS_L2[PNL-DOAS-L2] PNL_ED[PNL-EE-DIST] AHU1[AHU-2M.1 BACnet] AHU2[AHU-2M.2 BACnet] DOAS2W[DOAS-2W BACnet] BTU[BTU-CHWS-MAIN Modbus] SW_2F --- PNL_CHWP SW_2F --- PNL_V2 SW_2F --- PNL_AHU SW_2F --- PNL_DOAS_L2 SW_2F --- PNL_ED SW_2F --- AHU1 SW_2F --- AHU2 SW_2F --- DOAS2W SW_2F --- BTU end FBR_2F --- SW_2F subgraph "3rd Floor (Amenity/Guestroom)" SW_3F[Edge Switch 3F
8-port] PNL_V3[PNL-VENT-L3] SW_3F --- PNL_V3 end FBR_3F --- SW_3F subgraph "Basement" SW_B[Edge Switch BSMT
8-port] PNL_VB[PNL-VENT-BSMT] SW_B --- PNL_VB end FBR_LZ --- SW_B subgraph "Roofdeck" SW_RD[Edge Switch RD
16-port] PNL_PL_HZ[PNL-PL-HZ] PNL_CT[PNL-CT-RD] PNL_VRD[PNL-VENT-RD] PNL_DOAS_RD[PNL-DOAS-RD] PNL_PAHU[PNL-PAHU-RD] DOASR1[DOAS-RD.1 BACnet] DOASR2[DOAS-RD.2 BACnet] PAHU1[PAHU-RD.1 BACnet] PAHU2[PAHU-RD.2 BACnet] SW_RD --- PNL_PL_HZ SW_RD --- PNL_CT SW_RD --- PNL_VRD SW_RD --- PNL_DOAS_RD SW_RD --- PNL_PAHU SW_RD --- DOASR1 SW_RD --- DOASR2 SW_RD --- PAHU1 SW_RD --- PAHU2 end FBR_RD --- SW_RD ``` --- ## Switch schedule | Switch | Location | Ports | Type | Connects | |--------|----------|------:|------|----------| | **CORE** | BMS Server Room | 24 + 4 SFP | Managed L2/L3 (BACnet routing, VLAN, SNMP, NTP) | Servers ×2, WS ×2, GfxPC, Printer, riser fiber to 5 edge switches, customer-LAN uplink | | **SW-LZ** | Lower Ground / Pump room | 8 + 2 SFP | Managed L2 | PNL-PL-LZ, PNL-BL-LZ, riser fiber to BSMT-SW | | **SW-GND** | Ground / BOH | 16 + 2 SFP | Managed L2 | PNL-CH-PLANT-GND, PNL-CHWP-GND, PNL-VENT-GF, PNL-EE-MAIN, CH-1/2/3 | | **SW-2F** | 2nd Floor IDF | 16 + 2 SFP | Managed L2 | PNL-CHWP-L2, PNL-VENT-L2, PNL-AHU-L2, PNL-DOAS-L2, PNL-EE-DIST, AHU-2M.1/2, DOAS-2W, BTU-CHWS-MAIN | | **SW-3F** | 3rd Floor IDF | 8 + 2 SFP | Managed L2 | PNL-VENT-L3 | | **SW-BSMT** | Basement | 8 + 2 SFP | Managed L2 | PNL-VENT-BSMT (riser via SW-LZ) | | **SW-RD** | Roofdeck IDF | 16 + 2 SFP | Managed L2 | PNL-PL-HZ, PNL-CT-RD, PNL-VENT-RD, PNL-DOAS-RD, PNL-PAHU-RD, DOAS-RD.1/2, PAHU-RD.1/2 | **Total switches:** 7 (1 core + 6 edge) **Total active ports needed:** ~52 (network drops for panels + BACnet equipment) --- ## Cabling | Item | Count / Length | Notes | |------|----------------|-------| | Riser fiber (OM3 multimode, 6-strand armored) | 6 risers × ~50 m avg = **300 m** | Server room → 6 edge IDFs | | Fiber transceivers (1G SX or LX) | 14 (CORE × 5 risers + edge × 1 each) | Each end of each riser | | Cat6 patch cables (1–3 m, factory-made) | ~80 (panel and core room patching) | Per A3 trunk estimate | | Cat6 permanent links (at edge switches → BMS panels and BACnet equipment) | Already counted in A3 field cables | 27 BACnet/IP drops + 18 panel mgmt drops | | 19" rack at BMS Server Room | 1 (per A6 HE-RACK-01) | Houses CORE switch + servers + UPS | | Wall-mount enclosures at edge IDFs | 6 (1 per edge switch location) | 6U or 9U with patch panel + switch | | UPS for CORE switch + servers | 1 (per A6 HE-UPS-01) | Already counted in head-end | | Edge-switch UPS (small) | 6 × 500 VA | Optional — protects each edge switch from short outages | --- ## IP addressing plan (assumed) - **BMS subnet:** 10.10.50.0/24 (isolated VLAN, 254 host addresses) - **DHCP reservation pool:** .50–.99 for managed-static device assignments - **Static blocks:** - .10–.19: Servers and workstations - .20–.29: Edge switches (network management) - .50–.99: BMS controllers (per panel, allocated per A4 controller count) - .100–.199: BACnet/IP equipment (chillers, AHUs, DOAS, PAHU, BTU meter) - .200–.219: Power meter gateways - **Default gateway:** .1 (CORE switch) - **VLAN:** Single BMS VLAN (no segmentation in this scope; refine post-handover if required) - **Customer-LAN uplink:** 1 Gbps to customer's IT closet (firewalled per Q-012); BMS WAN access TBD --- ## Network management & security - All switches managed via SSH + SNMPv3 (BMS supplies credentials to customer at handover) - BACnet/IP routing enabled at CORE for BBMD coordination if subnetting introduced - Time sync via NTP from CORE (BMS server acts as time master, syncs to customer's NTP) - No internet exposure for BMS LAN — all WAN access through customer firewall - Q-012 will determine whether integration with PMS/FLS/CCTV/ACS adds IP allocation needs --- ## Open assumptions for A5 | ID | Assumption | Driver | |----|-----------|--------| | A-NET-001 | 1 Gbps fiber backbone, OM3 multimode, 6 risers | Sufficient for BMS data load (< 100 Mbps peak); fiber required for >90 m runs | | A-NET-002 | 6 edge IDFs (one per floor/zone in scope) | Topology assumption — verify with Q-005 architectural | | A-NET-003 | No VLAN segmentation; flat /24 BMS subnet | Simplest for handover; revisit if customer IT requires segregation | | A-NET-004 | Edge switches managed L2 only (not L3 router) | CORE handles inter-VLAN routing if needed | | A-NET-005 | UPS protection only for CORE + servers, not edge switches | Cost-down; optional 500 VA UPS per edge switch in OPT line item | --- ## Output for proposal This A5 feeds: - **Material BOQ** (Phase 6): switch count + types, fiber/Cat6 quantities, transceivers, racks/enclosures - **Programming hours** (B1): controller IP plan, BACnet object naming, broadcast management - **Installation manhours** (B4): network setup labor (drops × 0.5 hr in B4 already) - **Network architecture submittal drawing** (Phase 1.3 deliverable)