Model		GS1920-24
Product name		24-port GbE Smart Managed Switch
Port Density
Total port count		28
100/1000 Mbps		24
Gigabit combo (SFP/RJ-45)		4
Performance
Switching capacity (Gbps)		56
Forwarding rate (Mpps)		41.67
Packet buffer (byte)		1.5 M
MAC address table		16 K
Power
Input voltage of AC		100 - 240 V AC, 50/60 Hz
Max. power consumption(watt)		25.9
Physical Specifications
Item	Dimensions (WxDxH)(mm/in.)	441 x 131 x 44/17.36 x 5.16 x 1.73
	Weight (kg/lb.)	2.17/4.78
Packing	Dimensions (WxDxH)(mm/in.	561 x 220 x 82/22.09 x 8.66 x 3.23
	Weight (kg/lb.)	3.263/7.19
Included accessories		Power cord Rack mounting kit
Green Feature
Fanless		Yes
Environmental Specifications
Operating temperature		0°C to 50°C/32°F to 122°F
Storage temperature		-40°C to 70°C/-40°F to 158
Operating humidity		10% to 90% (non-condensing)
MTBF (hr)		211,623.0
Heat dissipation (BTU/hr)		88.32
Acoustic noise (dBA)		0

 

Standard Compliance

- IEEE 802.3 10BASE-T Ethernet

- IEEE 802.3u 100BASE-TX Ethernet

- IEEE 802.3ab 1000BASE-T Ethernet

- IEEE 802.3z 1000BASE-X

- IEEE 802.3af PoE

- IEEE 802.3at PoE Plus

- IEEE 802.3az EEE

- IEEE 802.3x flow control

- IEEE 802.3ad LACP aggregation

- IEEE 802.1AB LLDP/LLDP-MED

- IEEE 802.1D Spanning Tree Protocol (STP)

- IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)

- IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)

- IEEE 802.1Q VLAN Tagging

- IEEE 802.1p Class of Service (CoS) Prioritization

- IEEE 802.1X port authentication

 

Resilience and Availability

- IEEE 802.1D Spanning Tree Protocol (STP)

- IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)

- IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)

- IEEE 802.3ad LACP (Max # Trunks/Links per Trunk): 8/8

- Loop guard

- ErrDisable recovery

- MRSTP (ZyXEL proprietary)

- Dual configuration files

- Dual images

 

Traffic Control

- 802.1Q Static VLANs/Dynamic VLANs: 1 K/4 K

- Port-based VLAN

- Protocol-based VLAN

- IP Subnet-based VLAN

- MAC-based VLAN

- Private VLAN

- Voice VLAN

- VLAN ingress filtering

- LACP algorithm of source/destination MAC/IP

- GVRP

- L2PT

 

Security

- 802.1X

- Port security

- Layer 2 MAC filtering

- Layer 3 IP filtering

- Layer 4 TCP/UDP socket filtering

- Static MAC forwarding

- Multiple RADIUS servers

- Multiple TACACS+ servers

- 802.1x VLAN and 802.1p assignment by RADIUS

- Login authentication by RADIUS

- Login authentication by TACACS+

- TACACS+ accounting

- Authorization on RADIUS

- Authorization on TACACS+

- SSL

- MAC freeze

- DHCP snooping

- ARP inspection

- Static IP-MAC-Port binding

- Policy-based security filtering

- Port isolation

- IP source guard

- MAC search

- Guest VLAN

- ACL packet filtering (IPv4/IPv6)

- CPU protection

- Interface related trap enable/disable (by port)

 

Quality of Service (QoS)

- No. of hardware queues per port: 8

- 802.1p queuing methods: SPQ, WRR, WFQ

- Storm control: broadcast, multicast, unknown unicast (DLF)

- Port-based rate limiting (ingress/egress)

- Rate limiting per IP/TCP/UDP per port

- Policy-based rate limiting

- 802.3x flow control

- 802.1p Class of Service (SPQ, WFQ, SPQ/WFQ combination capable)

- DiffServ (DSCP)

 

Layer 2 Multicast 

- L2 multicast

- IGMP snooping (v1, v2, v3)

- IGMP snooping Fast Leave

- Configurable IGMP snooping timer and priority

- IGMP snooping statistics

- IGMP throttling

- MVR support

- IGMP filtering

- IGMP snooping immediate leave

- IGMP proxy mode & snooping mode selection

- MLD snooping

 

Manageability

- SNMP v1, v2c, v3

- SNMP trap group

- RMON (1, 2, 3, 9)

- ICMP echo/echo reply

- Syslog

- IEEE 802.1AB LLDP

- IEEE 802.1AB LLDP-MED.

 

IPv6 Management

- IPv6 over Ethernet (RFC 2464)

- IPv6 addressing architecture (RFC 4291)

- Dual stack (RFC 4213)

- ICMPv6 (RFC 4443)

- Path MTU (RFC 1981)

- Minimum path MTU size of 1280 (RFC 5095)

- Encapsulation for maximum PMTU of 1500

- Neighbor discovery (RFC 4861)

- DHCPv6 relay

 

Device Management

- ZyXEL iStackingTM

- Web interface

- Management through SNMP

- Remote firmware upgrade by Web

- Configuration saving and retrieving

- Configure clone

- DHCP relay per VLAN

- DHCP client

- Daylight saving

- NTP

- Port mirroring

 

MIB

- ZyXEL private common MIB

- RFC 1066 TCP/IP-based MIB

- RFC 1213, 1157 SNMPv2c/v3 MIB

- RFC 1493 bridge MIB

- RFC 1643 Ethernet MIB

- RFC 1757 RMON Group 1, 2, 3, 9

- RFC 2011, 2012, 2013 SNMPv2 MIB

- RFC 2233 SMIv2 MIB

- RFC 2358 Ethernet-like MIB

- RFC 2674 bridge MIB extension

- RFC 2819, 2925 remote management MIB

- RFC 3621 power Ethernet MIB

- RFC 4022 management information base for transmission control protocol

- RFC 4113 management information base for user datagram protocol

- RFC 4292 IP forwarding table MIB

- RFC 4293 Management Information Base (MIB) for IP

 

Certifications

Safety

- LVD

- BSMI

EMC

- FCC Part 15 (Class A)

- CE EMC (Class A)

- BSMI ENC

RoHS

- Level A