D-Link DGS-3420-28SC Switch

xStack 24-port SFP Layer 2 Stackable Managed Gigabit Switch Including 4-port Combo 1000BaseT / SFP plus 4 10GE SFP - Including 4 built-in Combo 1000BaseT / Mini-GBIC SFP ports- 4 10GE SFP, up to 20G bandwidth for stacking or 40G bandwidth for uplink- Up to 12 units per stack with other DGS-3620 series switches- Up to 32 units per virtual stack (Single IP Management) - IPv6 Ready Logo Phase I and Phase II, Provides Comprehensive IPv6 support Including IPv6 Tunnel, ICMPv6, IPv6 Neighbor Discovery (ND), DHCPv6, RIPng - IEEE 802.3x Flow Control, Auto MDI / MDI-X on all twisted pair ports- MSTP, ERPS, LACP - IEEE 802.3ad Link Aggregatioin (32 groups per device, 8 ports per group ) - 16K MAC address table, 1K routing table (shared by IPv4 / 6), 2K L3 forwarding table (shared by IPv4 / 6) - 256 Static IPv4 / IPv6 Routes (shared by IPv4 / 6) - IEEE 802.1p Priority Queues ( up to 8 queues) - Bandwidth Control (64kbps granularity), Class of Service (CoS) - QoS based on IPv4 or IPv6 parameters- IEEE 802.1Q VLAN (4095 static, dynamic 255 groups) - Advanced Access Control List (ACL) Ingress ACL: support profiles 6 and 256 rules per profile, Egress ACL: 4 support profiles and 128 rules per profile- Advanced Security, RADIUS / TACACS / SSHv2 / SSLv3- IEEE 802.1x Port, WAC / MAC based Access Control, IP-MAC Binding - Broadcast Storm Control, Traffic Segmentation- IGMP v1 / 2/3 Snooping, MLD Snooping- HTTP, Telnet, TFTP client, CLI, SNMP SYSLOG- v1 / v2c / v3, RMONv1 / v2 (4 groups) - Optional External Redundant Power Supply (DPS-500) - Smart fan, external SD card (for firmware config file, boot image, syslog), external alarm port- 19-inch rackmount size