Others Data transmission Maximum data transfer rate 1 Gbit/s   Supported data transfer rates 10/100/1000 Mbit/s   Switching capacity 12.8 Gbit/s   10G support N     Networking MAC address table 8000 entries   Networking features thernet, Fast Ethernet, Gigabit Ethernet   DHCP client Y   DHCP server Y   IP routing Y   IGMP snooping Y   Number of VLANs 256   Spanning tree protocol Y   Routing entries 32   Networking standards IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3z, IEEE 802.3x, IEEE 802.1D, IEEE 802.1Q/p, IEEE 802.1w, IEEE 802.1s, IEEE 802.1X, IEEE 802.3af, IEEE 802.3at     Management protocols SNMP 1/2/3, RMON, HTTP/HTTPS, TFTP, DHCP, SSH, RADIUS, BOOTP, SNTP     Connectivity Ports quantity 28   Copper ethernet cabling technology 10BASE-T/100BASE-TX/1000BASE-T   Ethernet LAN (RJ-45) ports quantity 24   SFP slots quantity 2   Gigabit Ethernet (copper) ports quantity 2     Weight & dimensions Rack mounting 19"   Dimensions (WxDxH) 440 x 257 x 44.45 mm   Weight 3090 g   Stackable N