physical ports: 16 10/100/1000BASE-T RJ-45 PoE ports and 2 Gigabit Ethernet SFP slots (SFP ports support dual speed 100/1000BASE-X); switching capability: 52 Gbps, Packet Buffer Size: 512 KB, MAC Address Table: 8K, Flash: 16 MB Auto-negotiation, IEEE 802.3x for full-duplex, Back-Pressure for half-duplex Spanning Tree Protocol: IEEE 802.1D (STP), IEEE 802.1w Rapid STP (RSTP), IEEE 802.1s Multiple STP (MSTP), STP Auto Edge Supports 4K IEEE 802.1Q VLANs, Port-based VLANs, Voice VLAN, Private VLAN, Q-in-Q Static Trunk, IEEE 802.3ad LACP, Trunk groups: 13 trunk links: Up to 12 ports IGMP Snooping v1/v2/v3, IGMP immediate leave, Jumbo frames up to 9 KB IEEE 802.3at Power over Ethernet (PoE) max. 30W/port, max. budget 225W QoS FEATURES Priority Queues: 8 hardware queues per port Traffic classification based on IEEE 802.1p CoS, DSCP, Supports WRR, Strict scheduling, or hybrid mode Rate Limiting - Ingress: Resolution 16 Kbps, Egress: Resolution 16 Kbps SECURITY: Port security: static and dynamic Supports IEEE 802.1X port based and MAC-based EAPOL transparent MAC authentication Web authentication HTTPS/SSL SSH v1.5/v2.0 MAC Filter/IP Filter DHCP Snooping Web management, SNMP v1/v2 Dual firmware/configuration upgrade/downgrade via TFTP/HTTP Supports DHCP Client, LLDP (802.1ab) and LLDP-MED RMON groups 1, 2, 3, and 9 Port mirroring: one to one and many to one Event log: local flash, syslog, remote server (RFC3164) and SMTP(RFC821) SNTP (IPv4/IPv6) IPv4/IPv6 dual protocol stack, IPv6 address types: unicast/multicast, IPv6 Ping/tracert ICMPv6 and ICMPv6 redirect, IPv6 neighbor discovery, IPv6 stateless auto/manual config IPv6 Telnet/SNMP/HTTP/DHCP