GTL-2881 KILBY 28-Port Stackable L3 Lite Managed Gigabit Switch, 2 x 10G SFP+, 1 x 10G Module SlotGTL-2881 KILBY 28-Port Stackable L3 Lite Managed Gigabit Switch, 24 Gigabit Ports, 2 x 10G SFP+ Uplinks, 1 x 10G Expansion Slot
The LevelOne GTL-2881 KILBY is a high-performance 28-port Stackable L3 Lite Managed Gigabit Switch designed for enterprise networks that require scalability, resilience and high-bandwidth uplinks. It features 24 Gigabit RJ45 ports, two 10G SFP+ uplink ports, and one 10G expansion slot for additional dual-port modules, making it well-suited for server aggregation, backbone upgrades and Gigabit-to-the-desktop deployments.
With advanced Layer 2 and L3 Lite capabilities—including VLAN, QoS, IGMP, LACP, STP, static routing and ERPS with sub-50ms failover—the GTL-2881 delivers enhanced traffic control, improved redundancy and optimized performance for converged voice, video and data applications. Dynamic ARP Inspection (DAI) helps protect the network from spoofing attacks, while comprehensive OAM tools simplify troubleshooting and maintenance.
Designed for scalability, the GTL-2881 supports physical stacking of up to 8 switches and virtual stacking of up to 36 devices, enabling unified management, monitoring and configuration across distributed network environments. This makes the switch an ideal choice for enterprise campuses, data centers and high-density wiring closets requiring performance, reliability and simplified centralized control.
| Port Configuration | |
|---|---|
| Console RJ45 | 1 |
| Gigabit RJ45 | 24 |
| 10-Gigabit module slot | 1 |
| Logistics Data. | |
| Harmonized System (HS) code. | 851762 |
| Customs product code (TARIC). | 8517620000 |
| Features 1. | |
| Features. |
OAM : IEEE 802.3ah Link IEEE 802.1ag Connectivity Fault Management (CFM) ITU-T Y.1731 performance and throughput management Stacking Features : IP Clustering up to 36 devices, bandwidth up to 20G Hardware Stacking up to 8 units, bandwidth up to 20G IPv4/IPv6 dual protocol stack G.8032 (ERPSv1/v2) VLANs: - Supports 4K IEEE 802.1Q VLANs - Port-based VLANs - GVRP/GARP - IEEE 802.1v Protocol-based VLANs - MAC-based VLANs - IP subnet-based VLANs - Private VLANs (Community) - Traffic Segmentation (port isolated) - Voice VLANs - VLAN trunking - VLAN translation L3 features: Multi-netting (CIDR) IPv4 Static Routes RIP v1/v2 ARP/Proxy ARPOAM : IEEE 802.3ah Link IEEE 802.1ag Connectivity Fault Management (CFM) ITU-T Y.1731 performance and throughput management Stacking Features : IP Clustering up to 36 devices, bandwidth up to 20G Hardware Stacking up to 8 units, bandwidth up to 20G IPv4/IPv6 dual protocol stack G.8032 (ERPSv1/v2) VLANs: - Supports 4K IEEE 802.1Q VLANs - Port-based VLANs - GVRP/GARP - IEEE 802.1v Protocol-based VLANs - MAC-based VLANs - IP subnet-based VLANs - Private VLANs (Community) - Traffic Segmentation (port isolated) - Voice VLANs - VLAN trunking - VLAN translation L3 features: Multi-netting (CIDR) IPv4 Static Routes RIP v1/v2 ARP/Proxy ARP |
| Miscellaneous. | |
| Grade. | Commercial |
| PoE Supported. | No |
| Manageable. | Yes |
| Fanless. | No |
| Concurrent ports. | Total 28.00 |
| Series. | KILBY series |
| Performance 2. | |
| Switching capacity. | 128 Gbps |
| Others. | |
| Approval and Compliance. | FCC Class A, CE, VCCI, CB, UL, WEEE, RoHS |
| Operating humidity. | 10% RH ~ 90% RH |
| Operating temperature. | 0°C ~ 45°C |
| Storage humidity. | 10% RH ~ 90% RH |
| Storage temperature. | -40°C ~ 70°C |
| Package Contents. |
GTL-2881, Power Cord, Console Cable, 19" Rack Mount Kit, Rubber Feet, Quick Installation Guide, Resource CD (User Manual, QIG) |
| General. | |
| Color. | Black |
| EAN. | 4015867198988 |
| Model Number. | GTL-2881 |
| Physical Specifications. | |
| Product weight (kg). | 3.7 |
| Dimensions (W x D x H). | 440 x 315 x 44 mm |
| System Specifications. | |
| Power supply. | AC power |
| Data Rate. | 10Gbps, 1Gbps |
| Power supply included. | Yes |
| Power input. | 100 to 240 V, 50-60 Hz, 1.5 A |
| Power consumption. | 35 W |
| MTBF. | 904,213 hr (25°C) |
| Packet forwarding rate. | 95.24Mpps |
| Port Configuration. | 24x 10/100/1000Base-T RJ45 ports, 2x 1/10GbE SFP+ slots, 1 x 10GbE Module Slot (Optional MDU-0211, 2-Port 10G SFP+ Module ) |
| Standard. |
● IEEE 802.3u CSMA/CD access method and physical layer specifications for 100 BASET-X Fast Ethernet ● IEEE 802.3z CSMA/CD access method and physical layer specifications for 1000 BASE Gigabit Ethernet ● IEEE 802.1D MAC Bridges (STP) ● IEEE 802.1d Standard Spanning Tree Protocol (RSTP) ● IEEE 802.1s Multiple Spanning Tree (MSTP) ● IEEE 802.1p priority tags ● IEEE 802.1x port authentication ● IEEE 802.3x Ethernet frame start and stop requests and timers used for flow control on full-duplex links ● IEEE 802.1q Virtual LAN ● IEEE 802.3ad Link Aggregation Control Protocol ● IEEE 802.1p priority tags ● IEEE 802.1x port authentication |
| Mount. | 19" rack mount |
| Flash memory size. | 128 MB |
| RAM size. | 256 MB |
| MAC address table. | 16K |
| Jumbo frame (KB). | 10 |
| Indicators. | LED indicaters : Port, Uplink, System, Diagnoustic |
| Packet buffer. | 1.5 Mbits |
| Backplane (Gbps). | 128 |
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