# Managed Switch LevelOne KILBY 28-Port Stackable L3

**URL:** https://aio.lv/en/product--levelone-gtl-2891--430222
**Data updated:** 2025-12-01 02:55 (EET)
**Category:** Network Switches
**Manufacturer:** LEVELONE
**Manufacturer code:** GTL-2891
**EAN:** 4015867199015
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 346.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 1 112.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--levelone-gtl-2891--430222

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

The LevelOne KILBY 28-Port Stackable L3 Managed Gigabit Switch features 24 Gigabit Ethernet ports, 2 x 10GbE SFP+ ports, and 1 x 10GbE module slot. With a switching capacity of 128 Gbit/s and a MAC address table of 16,000 entries, it supports various networking standards including IEEE 802.1D and IEEE 802.1Q. Ideal for high-performance networking environments, it offers full duplex communication and rack mounting capabilities.

## Long description

The GTL-2891 is a family of high-performance Gigabit Ethernet Layer 3 switches with 28 ports: 24 10/100/1000BASE-T ports, 2 10G SFP+ ports, and one 10G dual-port expansion slot. These switches are designed for server aggregation in enterprise data centers, backbone upgrades, and providing Gigabit-to-the-desktop connections for power users, supporting fiber and copper connectivity while delivering continuous availability and simple management.
Advantages
The GTL-2891 series offers a combination of high port density and 10G uplink options, making it suitable for connecting high-end servers and network-attached storage. Layer 3 capabilities and advanced QoS improve traffic management, while built-in security features increase edge protection. The devices balance performance and cost-effectiveness for enterprise deployments and are intended to simplify network operations with centralized management support.
Key specifications
 Ports: 24 x 10/100/1000BASE-T
 Uplink ports: 2 x 10G SFP+
 Expansion: 1 x 10G dual-port expansion slot
 Switching: Gigabit Ethernet, Layer 3 routing capabilities
 Typical use cases: server aggregation, data center access, backbone upgrade
How to use
Install the GTL-2891 in a standard rack and connect server or storage devices to the 1G copper ports and high-performance uplinks to the 10G SFP+ ports or the 10G expansion slot. Configure Layer 3 routing, VLANs, QoS, and security policies according to network design using the device management interface. Use the 10G interfaces for aggregation to core switches or for connecting high-bandwidth servers over fiber.
Recommendations
For optimal performance, connect high-throughput servers and NAS devices to the 10G SFP+ ports or the 10G expansion slot and reserve the 1G ports for desktops and less demanding equipment. Keep firmware updated and configure QoS and security features to match your traffic and access requirements.

## Specifications

### Ports & interfaces

| Feature | Value |
|---|---|
| Console port | RJ-45 |
| Basic switching RJ-45 Ethernet ports type | Gigabit Ethernet (10/100/1000) |
| Basic switching RJ-45 Ethernet ports quantity | 24 |
| SFP+ module slots quantity | 2 |

### Management features

| Feature | Value |
|---|---|
| Switch layer | L3 |
| Quality of Service (QoS) support | Yes |
| Switch type | Managed |
| Traffic classification | Yes |
| ARP inspection | Yes |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 5300 g |
| Package depth | 390 mm |
| Package height | 133 mm |
| Package width | 590 mm |
| Package type | Box |
| Rubber feet | Yes |
| Resource CD | Yes |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | LAN (RJ-45), AC |
| Quick start guide | Yes |
| Rack mount kit | Yes |

### Protocols

| Feature | Value |
|---|---|
| Management protocols | CLI/WEB, Telnet/SNMP v1/v2/v3, RMON I,BOOTP/DHCP, SNTP, DNS, |
| Supported network protocols | IPv4/IPv6 |
| GARP VLAN Registration Protocol (GVRP) | Yes |

### Logistics data

| Feature | Value |
|---|---|
| Country of origin | China |
| Master (outer) case height | 133 mm |
| Master (outer) case width | 590 mm |
| Master (outer) case gross weight | 5300 g |
| Master (outer) case length | 390 mm |
| Products per master (outer) case | 1 pc(s) |
| Harmonized System (HS) code | 85176990 |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 10 - 90 |
| Storage temperature (T-T) | -40 - 70 |
| Operating temperature (T-T) | 0 - 45 |
| Storage relative humidity (H-H) | 10 - 90 |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 35 W |
| Output current | 1.5 A |
| AC input frequency | 50 - 60 |
| AC input voltage | 100 - 240 |

### Certificates

| Feature | Value |
|---|---|
| Certification | FCC, CE, VCCI Class A, WEEE, RoHS |

### Design

| Feature | Value |
|---|---|
| Rack mounting | Yes |
| Safety | UL 60950-1 & CSA 60950-1, CB IEC 60950-1 & EN 60950-1, UL/CUL |
| LED indicators | Y |
| Product colour | Grey |
| Stackable | Yes |

### Power over Ethernet (PoE)

| Feature | Value |
|---|---|
| Power over Ethernet (PoE) | No |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 3.7 kg |
| Height | 44 mm |
| Width | 440 mm |
| Depth | 315 mm |

### Performance

| Feature | Value |
|---|---|
| Internal memory | 256 MB |
| Mean time between failures (MTBF) | 904213 h |
| Flash memory | 128 MB |
| Firmware upgradeable | Yes |
| Physical stacking (units) | 8 |
| Telnet | Yes |
| sFlow | Yes |

### Data transmission

| Feature | Value |
|---|---|
| MAC address table | 16000 entries |
| Switching capacity | 128 Gbit/s |
| Store-and-forward | Yes |
| Forwarding rate | 95.23 Mpps |
| Packet buffer memory | 1.5 MB |
| Static route | Yes |

### Security

| Feature | Value |
|---|---|
| Static port security | Yes |
| Access Control List (ACL) | Yes |
| SSH/SSL support | Yes |
| IGMP snooping | Yes |
| DoS attack prevention | Yes |
| BPDU filtering/protection | Yes |
| Authentication | Web-based authentication, MAC-based authentication |
| DHCP features | DHCP relay, DHCP snooping |

### Network

| Feature | Value |
|---|---|
| Full duplex | Yes |
| Networking standards | IEEE 802.1p, IEEE 802.3z, IEEE 802.3x, IEEE 802.3u, IEEE 802.3ah, IEEE 802.3ad, IEEE 802.1x, IEEE 802.1w, IEEE 802.1s, IEEE 802.1ag, IEEE 802.1Q, IEEE 802.1D |
| Link aggregation | Yes |
| Spanning tree protocol | Yes |
| VLAN support | Yes |
| 10G support | Yes |
| Virtual LAN features | Protocol-based VLAN, Voice VLAN, Private VLAN, MAC address-based VLAN, IP subnet–based VLAN, Port-based VLAN |

## FAQ

### How much does the Managed Switch LevelOne KILBY 28-Port Stackable L3 cost, and is it available for purchase?

The price is 1,346.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 18 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 30.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Managed Switch LevelOne KILBY 28-Port Stackable L3 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All LEVELONE products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized LEVELONE service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: basic switching rj-45 ethernet ports type, switch type, weight, basic switching rj-45 ethernet ports quantity, 10g support, networking standards, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Managed Switch LevelOne KILBY 28-Port Stackable L3?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/430222/54740029_large.webp