LevelOne GTL-2690 24 GE with 4 Combo SFP+2 10GE XFP Module Slots

GTL-2690 
24 GE with 4 Combo SFP + 2 10GE XFP Module Slots L3 Managed Stackable Switch 
  
-  20 RJ-45 10/100/1000Base-T + 4 Combo (RJ-45/SFP) GE ports   
-  2 stacking ports for hardware stacking up to 320Gbps throughput   
-  L3 hardware stacking up to 8 units to a maximum of 200 ports   
-  Robust IPv6 routing and management: PIM-DM; PIM-SM; DVMRP; IGMP   
-  Advanced QoS for marking, classification, and scheduling to deliver best-in-class performance for data, voice, and video traffic at wire speed 

LevelOne GTL-2690 is a Gigabit Ethernet Layer 3 stackable switch with 20 1000BASE-T Gigabit Ethernet ports, 4 Gigabit Ethernet RJ-45 Combo ports which associated with SFP (Small Form Factor Pluggable) slots, and plus 2 slots for optional 10GE Uplink modules. GTL-2690 is ideal for aggregating servers in the distribution layer of three-tier networks, providing high performance, wire speed L2 switching and L3 routing. It is also an excellent choice as a small enterprise core switch for Gigabit to the Desktop migration.

Performance and Scalability
GTL-2690 provides 2 optional 10 Gigabit Ethernet module slots for 10G uplink to fulfill any  bandwidtheager customer. Optional 10 Gigabit Ethernet XFP transceivers can be chosen for different distance fiber uplink. It also provides two stacking ports for hardware stacking of up to 8 units. Features close loop stacking for resilient stacking link.

Comprehensive QoS
8 egress queues per port enable differentiated management of up to 8 traffic types. Traffic is prioritized according to 802.1p, DSCP, IP precedence and TCP/UDP port number, giving optimal performance to real-time applications such as voice and video. Bidirectional rate-limiting, per port or traffic class, preserves network bandwidth and allows full control of network resources.

L3 Features
GTL-2690 delivers high-performance hardware based IP routing. RIP and OSPF provides dynamic routing by exchange routing information with other Layer 3 switches or routers. DVMRP*, PIM-DM*, PIMSM* Multicast Routing Protocols send IP multicast traffic from one subnet to another. VRRP prevents your system from failing by dynamically backing up multiple L3 switches for routing.