Enterprise Router / Egress Gateway Reference Design
An illustrative enterprise egress gateway reference design for the aggregation / edge layer of the five-layer network architecture: 2 × 2.5G copper WAN (2.5G PHY + 2.5G LAN transformer + GDT / ESD protection), 2 × 10G SFP+ optical ports (dedicated fiber line or uplink to aggregation), 8 × Gigabit LAN (8-port PHY + discrete Gigabit transformers + 2×4 RJ45), a Console management port and 12V power. Each position is marked with the VOOHU parts available, recommended part numbers and package pinouts.
Illustrative PCB ⇄ Schematic
Illustrative top-side view arranged by functional zone (not the actual layout). Red numbered dots mark positions VOOHU can supply. Click a component on the board, an entry in the index below or a part in the schematic to see recommended parts and package pinouts on the right.
Illustrative 2.5G WAN topology: the gateway SoC's HSGMII (2500Base-X) connects to single-port 2.5G PHYs JL4201 (U2 / U3), whose MDI passes ESD D1 / D2 (WHALD03G4U) and 2.5G LAN transformers T1 / T2 (WHSQ24002TG, with common-mode chokes on the PHY side) to the RJ45 1×2 (J1); the cable-side center taps go to chassis ground through 75Ω×2 + 1nF/2kV, gas discharge tubes GDT1 / GDT2 sit in parallel at the termination node, and the PHY-side center taps go to ground through 0.1µF. 2.5GBASE-T uses 4 pairs; only 1 is drawn. The PHY crystal, series resistors and decoupling are not drawn.
Board bill of materials
Summarized by position; click any row to locate it on the board above.
| No. | Zone | Position | Ref. | VOOHU category | Recommended part | Availability |
|---|---|---|---|---|---|---|
| 01 | A 2.5G WAN | Plain RJ45 1×2 (2.5G WAN) | J1 | RJ45 Connector | WH56I3288RGGG0121101 | VOOHU |
| 02 | A 2.5G WAN | 2.5G LAN transformer ×2 | T1 T2 | 2.5G/5G BASE-T | WHSQ24002TG | VOOHU |
| 03 | A 2.5G WAN | Ethernet ESD array ×2 | D1 D2 | TVS ESD | WHALD03G4U | VOOHU |
| 04 | A 2.5G WAN | WAN port GDT ×2 | GDT1 GDT2 | GDT | WHGD090V1P0B | VOOHU |
| 05 | D Gateway SoC | 2.5G PHY ×2 | U2 U3 | Ethernet PHY | JL4201-NC | VOOHU |
| 06 | D Gateway SoC | 25MHz crystal | Y1 | — | — | Non-VOOHU |
| 07 | B Gigabit LAN | Plain RJ45 2×4 (GE LAN ×8) | J2 | RJ45 Connector | SYT59212488DB1A1DY1B022 | VOOHU |
| 08 | B Gigabit LAN | Gigabit LAN transformers ×4 (dual-port) | T3 T4 T5 T6 | 10/100/1000 BASE-T | WHSG48001TG | VOOHU |
| 09 | B Gigabit LAN | 8-port Gigabit PHY | U4 | Ethernet PHY | JL2308-PC | VOOHU |
| 10 | B Gigabit LAN | 25MHz crystal | Y2 | — | — | Non-VOOHU |
| 11 | C 10G optical ports | SFP+ 1×2 cage + 20-pin connector | J3 J4 | SFP+ Series | WH292R029DBS02 | VOOHU |
| 12 | C 10G optical ports | SFP+ supply filter inductor ×2 | L1 L2 | Molded Inductors | WHYTA0420 series | VOOHU |
| 13 | D Gateway SoC | Multi-core gateway SoC | U1 | — | — | Non-VOOHU |
| 14 | D Gateway SoC | DDR memory | U5 | — | — | Non-VOOHU |
| 15 | D Gateway SoC | eMMC / Flash | U6 | — | — | Non-VOOHU |
| 16 | E Management | Console RJ45 | J5 | RJ45 Connector | WH56A11810011101 | VOOHU |
| 17 | E Management | RS-232 level shifter | U7 | — | — | Non-VOOHU |
| 18 | F 12V power | 12V power input | J6 | — | — | Non-VOOHU |
| 19 | F 12V power | Input TVS | D3 | — | — | Non-VOOHU |
| 20 | F 12V power | Power-line common-mode choke (EMI) | L3 | Power Line Common Mode Chokes | WHACM07A40R501 | VOOHU |
| 21 | F 12V power | Synchronous bucks ×3 | U8 U9 U10 | — | — | Non-VOOHU |
| 22 | F 12V power | Molded inductors ×3 (DC-DC) | L4 L5 L6 | Molded Inductors | WHYT0630 Series | VOOHU |
Resources & downloads
Board bill of materials
Reference designators, zones, VOOHU categories, recommended parts and availability for all 22 positions. Opens directly in Excel.
Datasheet collection
Datasheet PDFs for the VOOHU parts recommended on this board.
Design files & footprint library
Schematic, PCB, and VOOHU part footprints and 3D models.
Coming soonRequest the enterprise router / egress gateway reference design full package
Includes the full-board position list, datasheets for the recommended VOOHU parts and position-by-position selection notes. For selection advice on your WAN speed (2.5G / 5G / 10G copper or optical), LAN port count or magnetics option (RJ45 with integrated magnetics / discrete transformers), describe them in your requirements. We reply within 24 hours on business days.
