The AT-9000/28 provides high performance layer 2 switching at an affordable fixed configuration platform. The switch brings advanced enterprise features to a more affordable level while supporting the changing needs of the SMB market space to improve the delivery of converged data. Support for jumbo Ethernet frames enables higher throughput of time sensitive data. Features 28 active Gigabit Ethernet ports 4 x SFP combo ports support 100 & 1000 Mbps operation fiber SFPs Near silent operation 1RU form factor, rack & wall mountable Lower power operation – eco friendly Non-blocking wirespeed Layer 2 switching Management (WEB, CLI, SNMP) Industry standard CLI interface Port mirroring Spanning Tree (STP), Rapid Spanning Tree (RSTP) support Support for 255 active VLANs from 0~4096 VID range Qo S for multimedia voice & data IEEE 802.3ad LACP Support IEEE 802.1x & RADIUS client support Double VLAN Tagging (Q-in-Q)