RGS-R9244GP+-E Industrial Layer-3 28-port managed Gigabit Ethernet switch with 24×10/100/1000Base-T(X) and 4x1G/10GBase-X, SFP+ socket Datasheet Manual Firmware FeatureSupport Modbus TCP protocol Support IEEE 802.3az Energy-Efficient Ethernet technology Supports Layer 3 routing, RIP and static routing function Support O-Ring (recovery time < 30ms over 250 units of connection) and MSTP(RSTP/STP compatible) for Ethernet RedundancyO-Chain allow multiple redundant network rings *note Support standard IEC 62439-2 MRP (Media Redundancy Protocol) function Support IPv6 new internet protocol version Provided HTTPS/SSH protocol to enhance network security Support SMTP client and NTP server protocol Support IP-based bandwidth management Support application-based QoS management Support Device Binding security function Support DOS/DDOS auto prevention IGMP v2/v3 (IGMP snooping support) for filtering multicast traffic Support SNMP v1/v2c/v3 & RMON & 802.1Q VLAN Network ManagementSupport ACL and 802.1x User Authentication for securitySupports 9.6K Bytes Jumbo Frame SFP socket support DDM function Multiple notification for warning of unexpected event Support LLDP Protocol 19 inches rack mountable design Support DBU-01 backup unit device to quickly backup/restore configuration Web-based ,Telnet, Console (CLI), and Windows utility (Open-Vision) configuration*NOTE: This function is available by request only