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http://lanjangbi.cafe24.com/base/img/image/zyxel/gs1900/gs1900-24_manual.pdf

Standard Compliance

• IEEE 802.3 10BASE-T Ethernet
• IEEE 802.3u 100BASE-TX Ethernet
• IEEE 802.3ab (1000BASE-T) Ethernet
• IEEE 802.3x flow control
• IEEE 802.3az EEE support
• IEEE 802.1p CoS support 
• IEEE 802.3af PoE (GS1900-8HP/24HP/48HP)
• IEEE 802.3at PoE plus (GS1900-8HP/24HP/48HP)
• Full-duplex and half duplex operation with IEEE 802.3x flow control and backpressure
• Store and forward
• Auto MDI/MID-X

Traffic Management and QoS

• Port-based VLAN
• IEEE 802.1Q VLAN tagging
• IEEE 802.3ad LACP
• Guest VLAN
• Voice VLAN
• Storm control
• IEEE 802.1p priority queues per port
• IEEE 802.1p Queuing method (scheduler)
• Input priority mapping
• Rate limiting per port (ingress/egress)
• IEEE 802.3x flow control

Class of Service (CoS)

• IEEE 802.1p class of service (SPQ, WRR)
• Port-based CoS
• IP TOS precedence

Security

• IEEE 802.1x
• Port security
• Layer 2 MAC filtering
• BPDU guard 
• Static MAC forwarding
• RADIUS 
• TACACS+
• SSL
• Management VLAN
• CPU defense engine
• DoS prevention

Layer 2 Multicast

• IGMP snooping (v1,v2,v3)

IPv6

• IPv6 over Ethernet (RFC 2464)
• Dual-stack (RFC 4213)
• ICMPv6 (RFC 4884)
• Neighbor discovery (RFC 4861)
• Auto configuration
• Static IPv6 address and prefix length
• Static IPv6 default gateway
• IPv6 duplicate address detection

Discovery

• IEEE 802.1 AB LLDP
• LLDP-MED

Network Management

• SNMP v1,v2,v3
• RMON (1,2,3,9)
• ICMP echo/echo reply
• Syslog

MIB

• RFC 1213 MIB II
• RFC 2819 RMON (group 1,2,3,9)
• RFC 1215 generic traps
• RFC 1493 bridge
• Private MIB

Certifications

• EMC
  • CE, FCC, C-Tick, Class A (GS1900-8HP/24/24HP/48/48HP)
  • CE, FCC, C-Tick, Class B (GS1900-8/16/24E)
  • BSMI CNS13438
• Safety
  • LVD EN60950-1
  • BSMI CNS14336-1
• RoHS compliant

ZyXEL One Network

ZON Utility

• Discovery of ZyXEL switches, APs and gateways*
• Centralized and batch configurations
  • IP configuration
  • IP renew
  • Device reboot
  • Device locating
  • Web GUI access
  • Firmware upgrade
  • Password configuration
  • One-click quick association with ZyXEL AP Configurator (ZAC)

Smart Connect

• Discover neighboring devices
• One-click remote management access to the neighboring ZyXEL devices
• Reset neighboring devices remotely to factory defaults
• Power cycle neighboring powered devices (PoE switches only)

* Gateway supporting ZON utility is scheduled for future release.