... -4F is a type of WEB managed redundant Industrial Ethernet Switch, which support4 10/100M Ethernet ports ... ms at full load)3. Port-based VLAN, IEEE 802.1Q VLAN to ease network planning4. Support IEEE802.1p_QOS5. ... Support WEB management, easy- to-use7. Design for industrial Level 4 standard8. IP 30 protection, rugged high- ... 1D,IEEE802.1WProtocol:SW-Ring,STP/RSTP,QoS,VLAN,PVLAN, IGMP v1/v2/v3,SNMP v1/v2 ...