IEEE 802.3	10BaseT Ethernet
IEEE 802.3u	100BaseT(X) and 100BaseFX Fast Ethernet
IEEE 802.3ab	1000BaseT(X) Ethernet
IEEE 802.3z	1000BaseX Ethernet
IEEE 802.3x	Flow Control
IEEE 802.3d	Spanning Tree Protocol
IEEE 802.1w	Rapid Spanning Tree Protocol
IEEE 802.1s	Multiple Spanning Tree Protocol
IEEE 802.1p	Class of Service
IEEE 802.1Q	VLAN Tag (Virtual Local Area Network Tag)
IEEE 802.3ad	LACP (Link Aggregation Control Protocol)
IEEE 802.1x	User Authentication
IEEE 802.1ab	LLDP (Logical Link Discovery Protocol)
IEEE 802.3af/at	Power-over-Ethernet

MAC address table	16K
Packet Buffer	12Mbit
Handling method	store and forward

Number of RJ45 ports	Up to 24 gigabit electrical ports
Gigabit optical port	Up to 16 Gigabit SFP slots
PoE lead out line	V+，V+，V-，V-for Pin 1，2，3，6（Endspan，MDI Alternative A）
LED indicator light	Power supply, electrical port, optical port
Control serial port	RS-232, RJ45 connector, 115200bps, 8, N, 1

Terminal description	4-pin power terminal, 2-pin alarm terminal
Power supply parameters	48VDC or 110/220V
Alarm parameters	220V， Maximum 2A
Power protection	Reverse connection protection, overload protection

standard model	-10 ~ 60°C
Wide temperature model	-40 ~ 75°C
storage temperature	-40 ~ 85°C
relative humidity	5~95% (no frost)

casing	IP40 metal casing
Installation method	Standard rack mounted installation
size	440(W) x 44(H) x 352(D) mm

EMC	CE，FCC
EMI	FCC Part 15. CISPR(EN55022) class A
EMS	EN 61000-4-2（ESD）Level 4, EN 61000-4-3（RS）Level 4, EN 61000-4-4（EFT）Level 4, EN 61000-4-5（Surge）Level 4, EN 61000-4-6（CS）Level 4, EN 61000-4-8
Shock	IEC60068-2-27
Freefall	IEC60068-2-32
Vibration	IEC60068-2-6
Green Product	RoHS, WEEE

MIB	RFC 1215 Trap, RFC1213 MIB II,RFC 1157 SNMP MIB, RFC 1493 Bridge MIB, RFC 2674 VLAN MIB, RFC 1643,RFC 1757, RSTP MIB, Private MIB, LLDP MIB
equipment management	Support SNMP v1, v2, v3, Support web management (supporting HTTPS) Support Telnet configuration Support serial CLI configuration Support DHCP client Support user login password protection
Security features	Support ACL Support port based MAC filtering Support MAC address binding Support port based 802.1X authentication Support Radius authentication Support system self-defense to prevent attacks such as DDOS
VLAN	Supports port VLAN and IEEE 802.1Q Tag Maximum available VLANs: 64, VID range 1~4094 Support VLAN management
Port aggregation	Support static LACP
network redundancy	Supports STP (IEEE 802.1d), RSTP (IEEE 802.1w), and MSTP (IEEE 802.1s) Supports EAPS (Ethernet Link Automatic Protection Protocol)
QoS	Supports two scheduling methods: absolute priority and relative priority 4 priority queues Support scheduling based on 802.1p/DSCP queues, with 8 queues per port
Port Mirror	Support port based one-way and two-way traffic mirroring
IGMP multicast	Support IGMP Snooping V1/V2, up to 256 multicast groups
Port bandwidth control	Support speed limiting of packet traffic entering and exiting ports, with a minimum granularity of 64Kbps
Broadcast storm suppression	Support suppression of broadcast messages, multicast messages, and unknown unicast messages
Equipment maintenance	Support Syslog (system log) Support RMON (Remote Network Monitoring) Support Ping detection Support Link Layer Discovery Protocol (LLDP)
SNTP	Support SNTP protocol
Firmware Upgrade	Support web page and serial TFTP upgrade
configuration file	Support importing and exporting configuration files

MTBF	360000h
defects liability period	5 years