Komutatorius (Switch) LevelOne GTL-2891

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.

Standards:
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

Memory:
Flash Memory : 128 MB
DRAM : 256 MB

Buffer Memory: 1.5 MB
Port:
24 x 10/100/1000Mbps RJ45 port
2 x 10G SFP port
1 x RJ45 Console port
1 Slots for 2 x 10G Stacking /Uplink

Indicator: LED indicaters : Port, Uplink, System, Diagnoustic
Transmission Method: Store and Forward
Power Input: AC Input : 100 to 240 V, 50-60 Hz, 1.5 A
Power Consumption: 35 W
Backplane (Gbps):
Switching Bandwidth : 128 Gbps
Forwarding Performance : 95.23 Mpps

MAC Address Table: 16K
Data Rate:
GE:Resolution 64 Kbps ~ 1000 Mbps
10G:Resolution 64 Kbps~ 10000 Mbps

Power Saving: Yes
Heat Dissipation: Fanless
Operating Temperature (°C): 0°C to 45°C
Operating Humidity (Non-condensing): 10% to 90%
Storage Temperature (°C): -40°C to 70°C
Storage Humidity (Non-condensing): 10% to 90%

General:
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 10G
Hardware Stacking up to 8 units,
bandwidth up to 20G
Quality of Service(QoS):
Traffic Classification based on
IEEE 802.1p CoS, IP Precedence,
IP DSCP
Traffic Scheduling based on Strict
Priority, Weighted Round Robin,
Strict + WRR traffic scheduling
IGMP Snooping
MVR (Multicast VLAN Registration)
QinQ/Selective QinQ
G.8032 (ERPSv1/v2)
IPv4/IPv6 dual protocol stack

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
- Support UDLD
BPDU Guard/filtering/Forward

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)
PPPoE Intermediate Agent
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)

Management:
CLI/WEB Based
Telnet/SNMP v1/v2/v3
RMON I (1,2,3, 9 group)
Software Download
Auto upgrade
Dual Image
BOOTP/DHCP
SNTP
DNS
IP clustering
Even/Error/System log
Port monitor MAC/VLAN
LLDP (802.1ab)
sFlow
Delay reload

L3:
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
Dynamic Route

Packet Forwarding Rate: 95.24Mpps
Jumbo Frame (K): 10K
Switching Capacity: 128 Gbps