LevelOne KILBY 28-Port Stackable L3 Managed Gigabit Switch, 2 x 10GbE SFP+, 1 x 10GbE Module Slot

The GTL-2891 are a family of high-performance Gigabit Ethernet Layer 3 switches featuring 28 ports; with 24 10/100/1000BASE-T ports, 2 10G SFP+ ports, and one 10G dual port expansion slot. The switches are ideal for high-performance server aggregations, such as enterprise data centers, where they can connect high-end or network-attached files servers over fiber ports. They can also be deployed as a backbone upgrade, or to provide Gigabit to-the-desktop for power users. These switches are packed with features and are a cost-effective solution that bring continuous availability, enhanced security, and advanced QoS to the network edge, while maintaining simplicity of management.

Management features
Switch type:	Managed
Switch layer:	L3
Quality of Service (QoS) support:
Traffic classification:
ARP inspection:
Ports & interfaces
Basic switching RJ-45 Ethernet ports quantity:	24
Basic switching RJ-45 Ethernet ports type:	Gigabit Ethernet (10/100/1000)
SFP+ module slots quantity:	2
Console port:	RJ-45
Network
Networking standards:	IEEE 802.1D, IEEE 802.1Q, IEEE 802.1ag, IEEE 802.1p, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3ad, IEEE 802.3ah, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z
10G support:
Full duplex:
Link aggregation:
Spanning tree protocol:
VLAN support:
Virtual LAN features:	Private VLAN, Voice VLAN, Protocol-based VLAN, MAC address-based VLAN, Port-based VLAN, IP subnet based VLAN
Data transmission
MAC address table:	16000 entries
Switching capacity:	128 Gbit/s
Forwarding rate:	95.23 Mpps
Store-and-forward:
Static route:
Packet buffer memory:	1.5 MB
Security
DHCP features:	DHCP snooping, DHCP relay
Access Control List (ACL):
IGMP snooping:
Static port security:
SSH/SSL support:
BPDU filtering/protection:
Authentication:	MAC-based authentication, Web-based authentication
DoS attack prevention:
Protocols
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):
Design
Rack mounting:
Stackable:
Product colour:	Grey
LED indicators:
Country of origin:	China
Safety:	UL 60950-1 & CSA 60950-1, CB IEC 60950-1 & EN 60950-1, UL/CUL
Certification:	FCC, CE, VCCI Class A, WEEE, RoHS
Performance
Physical stacking (units):	8
Internal memory:	256 MB
Flash memory:	128 MB
Firmware upgradeable:
Telnet:
sFlow:
Mean time between failures (MTBF):	904213 h
Power
AC input voltage:	100 - 240 V
AC input frequency:	50 - 60 Hz
Output current:	1.5 A
Power consumption (typical):	35 W
Power over Ethernet (PoE)
Power over Ethernet (PoE):
Operational conditions
Operating temperature (T-T):	0 - 45 °C
Storage temperature (T-T):	-40 - 70 °C
Operating relative humidity (H-H):	10 - 90%
Storage relative humidity (H-H):	10 - 90%
Weight & dimensions
Width:	440 mm
Depth:	315 mm
Height:	44 mm
Weight:	3.7 kg
Packaging data
Cables included:	AC, LAN (RJ-45)
Quick start guide:
Package type:	Box
Rack mount kit:
Rubber feet:
Resource CD:
Package width:	590 mm
Package depth:	390 mm
Package height:	133 mm
Package weight:	5.3 kg
Logistics data
Master (outer) case width:	590 mm
Master (outer) case length:	390 mm
Master (outer) case height:	133 mm
Harmonized System (HS) code:	85176990
Master (outer) case gross weight:	5.3 kg
Products per master (outer) case:	1 pc(s)