Product Description
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24 x GbE PoE+ Port and 4 x SFP/GbE Combo Port
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RJ45 port supports 10/100/1000M adaptive
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PoE Power Management, PoE watch dog
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Fanless design, Natural Cooling,Compatible with 1U Rack Mount
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Lightning Protection Surge: General Mode 6KV, Differential Mode 4KV, ESD 15KV




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24-Port PoE + 4-Port Uplink ● 10/100/1000Mbps Ethernet ports |
Flexibility of Uplink Ports ● 4x 1G Ethernet / SFP combo ports ● 4 x 1G Ethernet ports Provide a variety of installation methods for easy deployment in any environment ● Support for the 19-inch cabinet installation ● Support desktop installation |
Heat Dissipation ● Made of high-quality metal case, sturdy and durable with long service life, provide better heat dissipation, suitable for most environment. ● Built-in fan and venting holes help to dissipate heat quickly and ensure stable product operation |
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High-Quality TPS PoE chipset inside ● High-Quality TPS PoE chipset inside ensure High performance and stable operation of the product. |
Auto-sensing technology ● The port power prioritization technology ensures the continuous power supply of the key nodes. |
Lightning protection ● Electrostatic standard: contact 6KV, air 8KV ● MTBF > 50000 hour |

Specifications
| Model | GS2028PS4 |
| Interface | 24 * 10/100/1000M POE Ports + 4 * Gigabit SFP/TP Combo Ports + 1 * Console Port |
| Network Protocols |
IEEE 802.3 IEEE 802.3u IEEE 802.3ab/ad/az/af/at IEEE 802.3x IEEE 802.1q IEEE 802.1p, QoS IGMP Snooping |
| PoE Parameters | PoE Standard: IEEE802.3at (30W) and IEEE802.3af (15.4w) |
| PoE compatibility: IEEE 802.3af/at adaptive | |
| POE port output: DC48-55V | |
| Power Pin Assignment: Power over spare pairs 1/2(+) and 3/6 (-) | |
| Port Lightning Protection |
General Mode 6KV, Differential Mode 4KV, ESD 15KV |
| Network Transmission Medium |
10BASE-T: Cat3, 4, 5 UTP (≤ 100 m) 100BASE-TX: UTP (≤100 m) above Cat5 1000BASE-TX: UTP (≤100 m) above Cat5 |
| Optical |
Multimode fiber: 1310nm, 2Km Single-mode fiber: 1310nm, 20/40 Km 1550nm, 60/80/100/120Km |
| The LED indicator | SYS, PWR, Link (lines 2, 4) / Act (lines 1, 3) |
| Power Supply |
Machine input voltage: AC110-240V Output: DC52V 5.76A Total power: 300W |
| Physical Dimension |
Product size (L×W×H): 445mm × 285mm × 45mm Package size (L×WxH): 470mm × 350mm × 120mm |
| Working Environment |
Operating Temperature: -20° ~ 55 °C Storage Temperature: -40 ° ~ 85 °C Operating Humidity: 10% ~ 95%, non-condensing Working height: up to 10,000 feet (3,000 meters) Storage height: up to 10,000 feet (3,000 meters) |
| Technical Indicators | |
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Bandwidth |
56Gbps (non-blocking) |
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Packet Forwarding rate |
41.66Mpps |
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Packet Buffer Memory |
4M |
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Memory Capacity |
128MB |
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Flash Capacity |
16MB |
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Jumbo frame |
9.6Kbytes |
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VLANs |
4096 |
|
MAC |
8K |
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Forwarding Mode |
Store-And-Forward |
| Layer 2 Software Function | |
| Port Management | Enable/Disable Port |
| Speed, Duplex, MTU Setting | |
| Flow-control | |
| Port Information Check | |
| Port Mirroring | Supports both side-way ports mirroring |
| Port Speed Limit | Supports port-based input/output bandwidth management |
| Port Isolation | Support the downlink port isolation and can communicate with the uplink port |
| Storm Suppression |
Supports unknown unicast, multicast, unknown multicast broadcast type storm suppression Storm suppression based on bandwidth regulation and storm filtering |
| Link Aggregation |
Support static manual aggregation Support LACP dynamic aggregation |
| VLAN | Access |
| Trunk | |
| Hybrid | |
| Support port, protocol, MAC-based VLAN partitioning | |
| Support GVRP dynamic VLAN registration | |
| Voice VLAN | |
| MAC | Support static addition, deletion |
| MAC addresses learning limit | |
| Support dynamic aging time setting | |
| Spanning tree |
Support STP spanning tree protocol Supports RSTP Rapid Spanning Tree Protocol Supports MSTP Rapid Spanning Tree Protocol |
| Multicast |
Support static addition, deletion IGMP-snooping |
| Support MLD-Snooping | |
| Support v1/2/3 dynamic multicast monitor | |
| DDM | Support SFP/SFP+DDM |
| Extended Function | |
| ACL | Based on source MAC, destination MAC, protocol type, source IP, destination IP, L4 port |
| QoS | Based on 802.1p (COS) classification |
| Based on the DSCP classification | |
| Classification based on source IP, destination IP and port number | |
| Support SP, WRR scheduling strategy | |
| Support flow rate limit CAR | |
| LLDP | Support LLDP link discovery protocol |
| User settings | Add/delete users |
| Log | User login, operation, status, events |
| Anti-attack | DOS defense |
| Support CPU protection and limits the rate of sending CPU packets | |
| ARP binding (IP, MAC, PORT binding) | |
| Certification | Support 802.1x port authentication |
| Support AAA certification | |
| Network diagnosis | Support ping, telnet, trace |
| System Management | Device reset, configuration save/restore, upgrade management, time setting, etc. |
| Management function | |
| CLI | Support serial port command line management |
| SSH | Support SSHv1/2 remote management |
| TELNET | Support telnet remote management |
| WEB | Support Layer 2 settings, Layer 2 and Layer 3 monitor |
| SNMP | SNMP V1/V2/V3 |
| Support trap: ColdStart, WarmStart, LinkDown, LinkUp | |
| RMON | Support RMON v1 |
| POE | Support PoE power supply |
| Other functions | Support DHCP Snooping, Option82 |
| Support dynamic ARP detection | |
| Support TACACS+ certification | |
| Support DNS certification | |
| Support port security settings | |
| Support MVR protocol | |
| Support cable detection VCT function | |
| Support UDLD protocol | |





