Layer 3 20-Port 100/1000X SFP + 4-Port Gigabit TP/SFP 1000X SFP + 4-Port 10G SFP+ Stackable Managed Gigabit Switch. Layer 3 IPv4/IPv6 Static Routing / RIP / OSPF v1/v2 / IP Stacking, 802.1Q VLAN / Q-in-Q / MSTP / IGMP Snooping / MLD Snooping / ACL / RADIUS / TACACS+