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L2+ Managed Switch
Product Name
24+4 L2+switch

Integrate the advanced protection function of HERHSIANG NGS series firewall, it can become an IP/MAC/PORT lock switch, lock all devices in the fixed PORT of the switch, can control and prevent devices from being arbitrarily added and connected to the Internet, which can effectively prevent virus ambush The network and equipment are paralyzed, and the location of all IPs under the cooperative defense switch can be grasped from the HERHSIANG firewall.

24-port 1Gb RJ-45 + 4-port COMBO (RJ-45/SPF) 1GbE expansion interface

(Another PoE model is optional)

FOR NGS full range

Product Specification

The GS2220 series managed switches are very suitable for data center access, SMB core/aggregation, and critical PoE mission applications. There are 4 models in this series, which provide 24 or 48 network ports, PoE or non-PoE, 1GbE (GS2220 series) uplink interface and other options. The whole series supports L3 functions such as static routing, policy routing (PBR), VRRP and ECMP. It also has a hardware backup design such as internal dual power supplies, hot-swappable fans and power modules. In addition, the PoE model complies with the IEEE802.3at PoE+ power supply standard and provides up to 375 watts of power, leading the industry

Switch class

 Layer 2 Plus (Layer 3 Lite)



Total port count


 100/1000 Mbps


 1G RJ-45 / SFP



 Switching capacity (Gbps)


 Forwarding rate (Mpps)


 Packet buffer (byte)


MAC address table




 100 - 240 V AC, 50/60 Hz

 Max. power consumption (watt)

 22.5 W

Standard Compliance

 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 802.1D 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*
 * Cloud and standalone modes supported features

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
 Loop guard*
 Root guard
 BPDU guard
 ErrDisable recovery
 Dual configuration files
 Dual images*
 * Cloud and standalone modes supported features

 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*
 Vendor ID based VLAN*
 VLAN ingress filtering
 LACP algorithm of source/ destination IP or MAC
 * Cloud and standalone modes supported features


 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
 New for V4.70 Compound authentication
 802.1x VLAN and 802.1p assignment by RADIUS
 Login authentication by RADIUS
 Login authentication by TACACS+
 TACACS+ accounting
 RADIUS accounting
 Authorization on RADIUS
 Authorization on TACACS+
 SSH v2
 MAC freeze
 DHCP snooping IPv4
 DHCP snooping IPv6
 ARP inspection
 Static IP-MAC-Port binding
 Policy-based security filtering
 Port isolation
 IP source guard (IPv4/IPv6)
 MAC search*
 Guest VLAN*
 ACL packet filtering (IPv4/IPv6)
 CPU protection
 Interface related trap enable disable (by port)
 MAC-based authentication per VLAN
 * Cloud and standalone modes supported features

Quality of Service (QoS)

 No. of Hardware Queues per Port: 8
 Storm Control: Broadcast, Multicast, Unknown Unicast (DLF)
 Port-based Rate Limiting (Ingress/Egress): */64 Kbps
 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
 * Cloud and standalone modes supported features


 SNMP v1, v2c, v3
 SNMP trap group
 RMON (1, 2, 3, 9)
 ICMP echo/echo reply
 Cloud support on V4.70 IEEE 802.1AB LLDP-MED*
 Custom default
 Syslog (IPv4/IPv6)
 Display port utilization*
 Support NebulaFlex Pro for Cloud Management
 * Cloud and standalone modes supported features

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
 Default DHCP client mode*
 * Cloud and standalone modes supported features

Device Management

 Standalone management by Web interface
 Cloud management by Nebula Control Center*
 Web interface
 Management through Console, Telnet, SNMP
 Remote firmware upgrade by FTP/ Web/TFTP
 New for V4.70 Networked AV mode by Web Interface
 Configuration saving and retrieving*
 Multiple logins supported
 Configure clone*
 Multilevel CLI
 CLI (Cisco-like)
 DHCP relay MAC proxy
 New for V4.70 DHCP server guard
 DHCP relay per VLAN
 DHCP client IPv4*
 DHCP client IPv6
 DHCP option 82
 New for V4.70 Auto PD Recovery
 Daylight saving*
 NTP supports IPv4/IPv6
 Port mirroring*
 RS-232 out-of-band console port
 Scheduled PoE*
 PoE default consumption mode*
 Restore to last custom default
 * Cloud and standalone modes supported features


 New private 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
 Cable diagnostic MIB


 FCC Part 15 (Class A)
 CE EMC (Class A)
 Level A

One Network

 ZON Utility
 Discovery of switches, APs and gateways
 Centralized and batch configurations
 IP configuration
 IP renew
 New Device factory reset
 Device reboot
 Device locating
 Web GUI access
 Firmware upgrade
 Password configuration
 One-click quick association with AP Configurator (ZAC)
 Smart Connect
 Discover neighboring devices
 One-click remote management access to the neighboring devices
 Reset neighboring devices remotely to factory defaults
 Power cycle neighboring powered devices (PoE switches only)

Environmental Specifications


 Temperature: 0°C to 50°C/32°F to 122°F
 Humidity: 10% to 95% (non-condensing)


 Temperature: -40°C to 70°C/-40°F to 158°F
 Humidity: 10%
to 90% (non-condensing)

Acoustic noise @ 25°C (min/max, dBA)

 0 dBA

Physical Specifications


 440 x 131 x 44



Included accessories

 Power cord /  Rack mounting kit 

HERHSIANG Information Co., Ltd.

 88673494097  88673596785

 3F, No.5, Dinghe St., Sanmin District, Kaohsiung City Taiwan  

Business hours: Monday ~ Friday 8:30 ~ 12:00 / 13:30 ~ 1800 

(Except holidays and national holidays)
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