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Miscellaneous
 
Data rate
Gigabit and 10-Gigabit Ethernet
PoE Supported
No
Concurrent ports
Total 28.00
Fanless
No
Manageable
Yes
Series
KILBY series
Grade
Commercial
Others
 
Approval and Compliance
● CE Mark (EN55022 Class A)
● EN 61000-3-2/3
● VCCI Class A
● FCC Part 15 Class A
● CB IEC 60950-1 & EN 60950-1
● UL/CUL
● UL 60950-1 & CSA 60950-1
● 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-2891
● Power Cord
● Console Cable
● 19" Rack Mount Kit
● Rubber Feet
● Quick Installation Guide
● Resource CD (User Manual, QIG)
Physical Specifications
 
Dimensions (W x D x H)
440 x 315 x 44 mm
Product weight (kg)
3.7
System specifications
 
Backplane (Gbps)
128
Flash memory size
128 MB
Packet forwarding rate
95.23 Mpps
Indicators
LED indicaters : Port, Uplink, System, Diagnoustic
Jumbo frame (KB)
10
MAC address table
16 K
Mount
19" rack mount
MTBF
904,213 hr (25°C)
Packet buffer
1.5 Mbits
Port Configuration
24x 10/100/1000 Ethernet ports, 2x 1/10GbE SFP+ slots, 1 x 10GbE Module Slot (Optional MDU-0211, 2-Port 10G SFP+ Module )
Power consumption
35 W
Power input
100 to 240 V, 50-60 Hz, 1.5 A
Power supply
AC power
Power supply included
Yes
RAM size
256 MB
Standard
IEEE 802.1p Quality of Service (QoS)
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 802.3u CSMA/CD access method and physical
layer specifications for 100 BASE-TX Fast Ethernet
IEEE 802.3z CSMA/CD access method and physical
layer specifications for 1000 BASE Gigabit Ethernet
IEEE 802.1q Virtual LAN
IEEE 802.1d Spanning Tree Protocol
IEEE 802.3ad Link Aggregation Control Protocol (LACP)
IEEE 802.1s Rapid Spanning Tree Protocol
IEEE 802.1w Multiple Spanning Tree Protocol
Features 1
 
Features
L2 Features
Auto-negotiation for port speed and duplex mode Flow Control:
■ IEEE 802.3x for full-duplex mode
■ Back-pressure for half-duplex mode

Spanning Tree Protocol:
■ IEEE 802.1D Spanning Tree Protocol (STP)
■ IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
■ IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
■ BPDU Guard
■ BPDU filtering
■ Root Guard
■ Loopback detection
■ Spanning Tree Fast Forwarding
■ Auto Edge-Port
■ BPDU Forward
Storm Control (broadcast/multicast/unknown unicast) VLANs:
■ Supports 4K IEEE 802.1Q VLANs
■ Port-based
■ GVRP/GARP
■ VLAN Translation
■ IEEE 802.1v Protocol-based VLANs
■ MAC-based VLANs
■ IP subnet-based VLAN
■ Private VLAN (Community)
■ Traffic Segmentation (port isolated)
■ Guest VLAN
■ Voice VLAN
■ VLAN trunking
Link Aggregation:
■ Static trunk
■ IEEE 802.3ad Link Aggregation Control Protocol
■ Trunk groups: 16
■ Trunk links: 2~8 ports for Gigabit Ethernet ports 2~4 ports for 10 Gigabit Ethernet ports
■ Load Balance: SA+DA, SA, DA, SIP+DIP, SIP, DIP
IGMP Snooping:
■ IGMP v1/v2/v3 snooping
■ IGMP Filtering
■ IGMP Throttling
■ IGMP Immediate Leave
■ IGMP Querier v1/v2
■ IGMP SNP Proxy (v1/v2/v3)
■ IGMP Authentication
■ Source Filtering Mode Data Forwarding
QoS Features
Priority Queues: 8 hardware queues per port Traffic classification
■ IEEE 802.1p CoS
■ DSCP
Traffic Scheduling
■ Strict Priority
■ Weighted Round Robin
■ Strict + WRR traffic scheduling
■ GE: Resolution 64 Kbps ~ 1000 Mbps
L3 Features IPv4
■ Static unicast routes
■ Equal cost multipath routing (ECMP)
■ RIP v1/v2
■ OSPF
■ BGP4+
■ PIM-DM
■ IGMP v1/v2
■ IGMP v1/v2 proxy
■ IGMP v3
■ IGMP v3 proxy
■ PIM-SM
■ VRRP
■ Proxy ARP
■ UDP Helper
L3 Features IPv6
■ PIM-DM6
■ PIM-SM6
■ IPv6 static route
■ OSPFv3
■ MLD v1/v2
Management
Firmware and Configuration:
• Firmware upgrade via TFTP server
• Supports dual image
• Supports auto configuration provision
• Supports auto firmware upgrade
• Multiple configuration files
• Software download/upgrade via TFTP or HTTP server
• Configuration file download/upgrade via TFTP or HTTP server
■ RMON (groups 1, 2, 3 and 9)
■ BOOTP, DHCP client for IP address assignment SNTP, NTP
■ IP clustering
■ Port mirroring
■ VLAN mirror
■ sFlow
■ Event/error log/syslog, remote log, SMTP
■ MIB I/II
■ LLDP (802.1ab)
■ Auto traffic control
■ DHCP: Relay, dynamic provision (via Option 66,67), DHCPINFO, SERVER
■ MAC-based mirror
■ ACL mirror
■ Remote port mirror (RSPAN)
■ DNS client, proxy
■ Link Layer Discovery Protocol (LLDP)
■ LLDP-MED (VoIP related)
■ CLI via console port or Telnet
■ Web management
■ SNMP v1, v2c, v3
Security
■ Port security
■ IEEE 802.1X port-based and MAC-based
■ authentication IEEE 802.1X EAPOL frames pass-through
■ IEEE 802.1X supplicant support
■ Dynamic VLAN assignment
■ Dynamic QoS assignment
■ MAC authentication, Web authentication
■ Voice VLAN, Guest VLAN
■ Access Control List
■ L2/L3/L4
• L2 ACL filter SA/DA/VLAN
• L3 IP SA/DA, subnet based
• L4 TCP/UDP port
• IPv6
■ Time-based (time range) DHCP Snooping
■ DHCP Snooping Option 82 IP Source Guard
■ Dynamic ARP Inspection
■ Instruction lock (link detection)
■ RADIUS authentication and accounting
■ TACACS + authentication, authorization, and accounting Management Security
• HTTPS and SSL (secured Web)
• Denial of Service (DoS) protection
• SSH 1.5/V2.0 (secured telnet session)
• Management interface access filtering (SNMP, Web, Telnet)
Performance 2
 
Switching capacity
128 Gbps