The **EX87424-R2SW** is a high-performance, industrial-grade Managed Ethernet Switch manufactured by EtherWAN. This device is designed for mission-critical environments such as smart cities, surveillance, and industrial automation. Below is a breakdown of its electronic components, specifications, and core features. --- ## 1. Port Configuration and Connectivity The "87424" designation refers to the specific port density and type layout of the switch. | Port Type | Quantity | Description | | :--- | :--- | :--- | | **10/100/1000BASE-T** | 24 | Copper RJ45 ports for standard Ethernet devices. | | **1G/10G SFP+ Slots** | 4 | Uplink ports for high-speed fiber optic connectivity. | | **Console Port** | 1 | RS-232 (RJ45) for out-of-band management. | --- ## 2. Core Electronic Specifications The internal architecture is built to handle high throughput with low latency, typical of Layer 2+ managed switches. ### Switching Capacity * **Backplane Speed:** 128 Gbps switching fabric. * **Forwarding Rate:** 95.24 Mpps (Million packets per second). * **MAC Table:** Supports up to 16K MAC addresses. * **Packet Buffer:** 1.5MB embedded memory. ### Power System * **Redundancy:** The "R2" in the model name often signifies dual redundant power inputs. * **Input Voltage:** Typically 100-240VAC (Internal Universal PSU). * **Power Consumption:** Max 40W (system only, non-PoE model). --- ## 3. Industrial Hardening (Electronic Integrity) Unlike commercial switches, the electronic parts of the EX87424-R2SW are selected for durability under electrical stress. * **Surge Protection:** 6KV surge protection on copper ports. * **ESD Protection:** 8KV air and 6KV contact protection. * **Operating Temperature:** -40°C to 75°C (-40°F to 167°F). * **MTBF:** High Mean Time Between Failures (>200,000 hours) due to industrial-grade capacitors and solid-state components. --- ## 4. Managed Firmware Features The electronic controllers support the following protocols: * **Redundancy Protocols:** Alpha-Ring (recovery <15ms), RSTP, MSTP, and LACP. * **Security:** IEEE 802.1x, ACL, Port Security, and RADIUS/TACACS+. * **Traffic Management:** IGMP Snooping (for IPTV/Surveillance), QoS (8 priority queues), and VLAN (up to 4094 IDs). --- ## 5. Mechanical Design * **Chassis:** 1U 19" Rackmount metal housing. * **Cooling:** Fanless or smart-fan design depending on the specific revision, optimized for heat dissipation. * **IP Rating:** IP30 rated metal case. ---