PSGS-2828XBH (740W)

Overview
Specification
Datasheet
Series Datasheet
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Product Overview

PSGS-2828XBH L2+ managed GbE PoE+ switch is the next-generation Ethernet Switches offering full suite of L2 features, additional 10GbE uplink connections, better PoE functionality and usability, including advanced L3 features such as Static Route. In addition to the extensive management features, PSGS-2828XBH also provide carrier Ethernet features such as ERPS/EPS/PTPv2, of which make them suitable for carrier Ethernet applications.

PSGS-2828XBH delivers 24 (10M/100M/1G) RJ45 with 24 PoE+ (Support 802.3at/af, and total up to 740W) ports, 4 10GbE SFP+ ports and RJ45 Console port. PSGS-2828XBH provides high HW performance and environment flexibility for SMBs and Enterprises.

The embedded Device Managed System (DMS) features provides users with the benefits of easy-to-use/configure/install/troubleshoot in the video surveillance, wireless access, and other SMBs and Enterprises applications. PSGS-2828XBH is ideal to deliver management simplicity, better user experience, and lowest total cost of ownership.

Key Features	Customer Benefits
Comprehensive L2 Support	Provided comprehensive L2 switching capabilities with easy-to-use management to move your data smoother and faster
Carrier Ethernet Support	Provided the ideal combination of afford-ability and capabilities for Carrier networking (ERPS, EPS, PTPv2)
Ethernet Ring Protocol Switching (ITU G.8032)	Provided link redundancy ability to reduce networking service risks and guarantee network service risks and guarantee network service availability

Product Specification

MODEL NAME	PSGS-2828XBH
Product Description	28 ports GbE/10GbE L2+ Managed PoE+ Switch

Port Configuration

10M/100M/1G RJ45 Port		24
100M/1G/2.5G RJ45 Port		--
100M/1G/10G RJ45 Port		--
100M/1G/2.5G/5G/10G RJ45 Port		--
100M/1G SFP Port		--
GbE RJ45/SFP Combo Port		--
1G/2.5G SFP Port		--
1G/10G SFP+ Port		4
SFP28/QSFP+ Combo Port		--
1G/10G/25G SFP28 Port		--
QSFP+ (40G)		--
SFP56 (50G)		--
USB		--
Console Port		RJ45
Total Ports		28

PoE Function

IEEE802.3at (PoE+ 30W)
IEEE802.3af (PoE 15.4W)
UPoE(60W)		--
IEEE802.3bt (PoE++ 90W)		--
PoE Port		24
Available PoE Power		740W

HW Performance

Switching Bandwidth		128Gbps
Forwarding Performance		95.238Mpps
MAC Address		32K
Jumbo Frames		10240 Bytes

Environmental Specification

Operating Temperature		0°C to 50°C
Operating Humidity		5 to 95% RH
Storage Temperature		-20 to 70°C
Storage Humidity		5 to 95% RH

Mechanical Specification

Dimensions (H) x (W) x (D) mm		44 x 442 x 211
Weight		3.8 Kg
FAN Less		--

Power Source

AC Input		100V-240V
DC Input		--
Dual Input		--

Certifications

EN61000-4-5 (for RJ45 Port, Surge 6KV)		--
Certifications		CE/FCC Class A Others by Request

L2 Switching

Spanning Tree	IEEE802.1D (STP)
	IEEE802.1W (RSTP)
	IEEE802.1S (MSTP)
VLAN	802.1Q VLAN
	Port-Based
	VLAN Entries	4K
	Private VLAN
	Voice VLAN
	Guest VLAN
	Q-in-Q
	802.1v Protocol VLAN
	MAC-Based VLAN
	IP Subnet-Based VLAN
IEEE 802.3ad LACP	Dynamic Trunk
	Static Trunk
GARP/GVRP
IGMP Snooping
MLD Snooping
Multicast VLAN Registration (MVR)

L3 Features

Static Route
DHCP Server
Dynamic Routing		--

QoS Features

Class of Service	Port Based
	802.1p
	DSCP
	TCP/UDP Port
Rate Limiting	Ingress
	Egress
Priority Queue Scheduling	WRR
	Stri Priority
Hardware Queues		8

Security

ACLs	L2/L3/L4
	IPv6 Support
Port Security (MAC-based)
IP Source Guard
Storm Control
RADIUS Authentication 802.1x
TACACS+ Authentication
HTTPs and SSL (Secured Web)
BPDU Guard
STP Root Guard
DHCP Snooping
Loop Protection

Management

DHCP	Client
	Relay
	Option 66
	Option 67
	Option 82
Event/Error Log	Syslog
	SMTP (RFC821)
Management Access Filtering	SNMP
	Web UI
	Telnet
	SSH
PoE Management	Scheduling
	Auto-Checking
	Power Delay
	Soft-Reboot PoE Non-stop
SNMP (v1, v2c, v3)
RMON (1,2,3 & 9 Groups)
Software Upgrade
Configuration Export/Import
Port Mirroring
LLDP (IEEE802.1AB)
LLDP-MED (IEEE802.1AB)
CDP Aware
sFlow
IPv6 Management
NTP
First Time Wizard		--

Carrier Ethernet

SyncE		--
1588v2 PTP
G.8265.1/G.8275.1/G.8275.2		--
1588v2 PTP (stratum3)		--
OAM (IEEE802.3ah)		--
CFM (IEEE802.1ag)		--
PM (ITU-T Y.1731)		--
ELPS (ITU-T G.8031)
ERPS (ITU-T G.8032)
Rapid-Ring		--
RFC2544		--
Y.1564		--

Device Management System

Device Management	Topology View
	Floor View
	Map View
	Dashboard
	Traffic Monitoring
	Cable Diagnostics

PSGS-2828XBH L2+ Managed GbE Switch

Key Features

L2+ Managed features provide easier manageability, robust security and QoS
Built in Device Management System (DMS)
ITU-T G.8031 Ethernet Linear Protection Switching (EPS)
ITU-T G.8032 Ethernet Ring Protection Switching (ERPS)
IEEE 1588v2 PTP
DHCP Server
IPv4/IPv6 Management
PoE Port configuration and scheduling
IEEE 802.3af/at/UPoE/ PoE++ Power over Ethernet
IEEE 802.3az EEE Energy Efficient Ethernet standard for green Ethernet

Benefits

Feature-rich Ethernet Switch for Enterprise-class

The switch delivers advanced functionality in L2+ managed switch including Layer 3 static route, DHCP server, IPv6 support, LLDP, etc. It also has comprehensive security features such as IP source guard and Access Control List guard your network from unauthorized access.
It helps users to build on the market-leading price/performance with L2+ Managed GbE switch, and provide secure, reliable and ease of use for enterprise and SMB deployments.
Easy to Install Configure and Troubleshoot by Device Management System

The DMS provides embedded functions to facilitate devices management at anytime and anywhere. Its user-friendly interface helps users to manage devices intuitively.
It supports various IP device types (e.g. IP-phone, IP-camera, WiFi-AP, etc.) for end-users to enhance manageability and save your time/cost by detecting/configuring various types of devices automatically.
Lower Total Cost of Ownership (TCO) with Energy-efficient Design

It is designed to help companies to save power needs and reduce TCO by Energy Efficient Ethernet (IEEE 802.3az). It can be used for customers to build a green Ethernet networking environment.
Advanced Power over Ethernet Management

The model includes PoE++ options to power IP devices with power-saving features like Power scheduling and PoE configuration.

Specifications

Port Configuration

Total Ports	RJ45 (10M/100M/1G)	Uplinks	Console
28	24	4 SFP+	RJ45

Hardware Performance

Forwarding Capacity (Mpps)	Switching Capacity (Gbps)	Mac Table (K)	Jumbo Frames (Bytes)
95.238	128	32	10240

Environmental Range

Operating Temperature		Storage Temperature		Operating Humidity	Altitude
Fahrenheit	Centigrade	Fahrenheit	Centigrade	Operating Humidity	Feet	Meters
32 to 122	0 to 50	-4 to 158	-20 to 70	10% to 95%, Non-condensing	<10000	<3000

Dimension Weights Humidity

Dimension (WxHxD)		Weight		Mounting Type
Millimeter	Inches	Kilograms	Pounds	Mounting Type
442x 44x 211	17.4x 1.7x 8.3	<3.8	<8.36	Desktop, Rack

Voltage and Frequency

AC Input Voltage and Frequency
Voltage	Frequency
100-240 VAC	50~60 Hz

PoE Power Capacity

Available PoE Power	Number of Ports That Support PoE(15.4W) and PoE+(30.0W)
740W	Each of port 1 – 24 support PoE/ PoE+ within available PoE Power

Certification

Electromagnetic Emissions (EMC)
CE, FCC Part 15 Class A, Others by Request

Software Features

Ring Management
ITU-T G.8031	Supports ITU-T G.8031 Ethernet Linear Protection Switching
ITU-T G.8032	Supports ITU-T G.8032 Ethernet Ring Protection Switching
Layer 2 Switching
Spanning Tree Protocol (STP)	Standard Spanning Tree 802.1d: Spanning Tree Protocol is an OSI layer-2 protocol which ensures a loop free topology for any bridged LAN Rapid Spanning Tree (RSTP) 802.1w: Rapid Spanning Tree Protocol, which provides for faster spanning tree convergence after a topology change Multiple Spanning Tree (MSTP) 802.1s: Multiple Spanning Tree Protocol. The MSTP protocol provides for multiple spanning tree instances
VLAN	802.1Q tag-based VLAN: Supports up to 4K VLANs simultaneously (out of 4096 VLAN IDs) Port-based VLAN: A port member of a VLAN can be isolated to other isolated ports on the same VLAN and Private VLAN Private VLAN Edge (PVE): Private VLANs are based on the source port mask, and there are no connections to VLANs. This means that VLAN IDs and Private VLAN IDs can be identical Voice VLAN: The Voice VLAN feature enables voice traffic forwarding on the Voice VLAN Guest VLAN: The IEEE 802.1X Guest VLAN feature allows a guest VLAN to be configured for each 802.1X port on the device to provide limited services to non-802.1X-compliant clients Q-in-Q (double tag) VLAN: Business customers of service providers often have specific requirements for VLAN IDs and the number of VLANs to be supported 802.1v Protocol VLAN: Classifying multiple protocols into a single VLAN often imposes VLAN boundaries that are inappropriate for some of the protocols, requiring the presence of a non-standard entity to relay between VLANs the frames bearing the protocols for which the VLAN boundaries are inappropriate MAC-based VLAN: The MAC-based VLAN feature allows incoming untagged packets to be assigned to a VLAN and thus classify traffic based on the source MAC address of the packet IP Subnet-Based VLAN: In an IP subnet–based VLAN, all the end workstations in an IP subnet are assigned to the same VLAN. In this VLAN, users can move their workstations without reconfiguring their network addresses Management VLAN: Management VLAN is used for managing the switch from a remote location by using protocols such as telnet, SSH, SNMP, syslog etc
LACP Trunking	Link Aggregation Control Protocol (LACP) IEEE 802.3ad: Controls whether LACP is enabled on this switch port. LACP will form an aggregation when 2 or more ports are connected to the same partner Up to 14 groups Up to 16 ports per group
GARP VLAN Registration Protocol (GVRP/GVRP)	GVRP stands for GARP (Generic Attribute Registration Protocol) VLAN Registration Protocol. It’s a Layer 2 network protocol, for automatic configuration of switches in a VLAN network
DHCP Relay	Relay of DHCP traffic to DHCP server in different VLAN. Works with DHCP Option 82
IGMP v1/v2/v3 snooping	IGMP limits bandwidth-intensive multicast traffic to only the requesters. Supports 1024 multicast groups
IGMP Querier	IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router
IGMP Proxy	IGMP snooping with proxy reporting or report suppression actively filters IGMP packets in order to reduce load on the multicast router.
MLD v1/v2 snooping	Delivers IPv6 multicast packets only to the required receivers
Multicast VLAN Registration (MVR)	It uses a dedicated manually configured VLAN, called the multicast VLAN, to forward multicast traffic over Layer 2 network in conjunction with IGMP snooping
Layer 3 Switching
IPv4 Static Routing	IPv4 Unicast: Static routing
IPv6 Static Routing	IPv6 Unicast: Static routing
Quality of Service
Hardware Queue	Supports 8 hardware queues
Classification	Port based: Traffic QoS by Port 802.1p: VLAN priority based Layer 2 CoS QoS, Class of service is a parameter used in data and voice protocols to differentiate the types of payloads contained in the packet being transmitted DSCP based Differentiated Services (DiffServ) Layer 3 DSCP QoS: IP packets can carry either an IP precedence (IPP) value or a Differentiated Services Code Point (DSCP) value. QoS supports the use of either value because DSCP values are backward-compatible with IP precedence values Classification and re-marking TCP/IP ACLs: QoS by ACL
Rate Limiting	Ingress policer Strict priority and weighted round-robin (WRR): Weighted Round Robin is a scheduling algorithm that uses weights assigned to queues to determine how much data will be emptied from a queue before moving to the next queue
Scheduling	Strict priority and weighted round-robin (WRR)
Security
ACLs	Supports up to 512 entries. Drop or rate limitation based on: Source and destination MAC, VLAN ID or IP address, protocol, port Differentiated services code point (DSCP) / IP precedence TCP/ UDP source and destination ports 802.1p priority Ethernet type Internet Control Message Protocol (ICMP) packets TCP flag
Port Security	Locks MAC Addresses to ports, and limits the number of learned MAC addresses
IP Source Guard	Prevents illegal IP address from accessing to specific port in the switch
Storm control	Prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast storm on a port
IEEE 802.1X	IEEE802.1X: RADIUS authentication, authorization and accounting, MD5 hash, guest VLAN , single/multiple host mode and single/multiple sessions Supports IGMP-RADIUS based 802.1X Dynamic VLAN assignment
RADIUS/ TACACS+	Supports RADIUS and TACACS+ authentication. Switch as a client
Secure Shell (SSH)	SSH secures Telnet traffic in or out of the switch, SSH v1 and v2 are supported
HTTPs and SSL (Secured Web)	Hyper Text Transfer Protocol Secure (HTTPS) is the secure version of HTTP
BPDU Guard	The BPDU guard, an enhancement to STP, removes a node that reflects BPDUs back in the network. It enforces the STP domain borders and keeps the active topology predictable by not allowing any network devices behind a BPDU guard-enabled port to participate in STP
DHCP Snooping	A feature acts as a firewall between untrusted hosts and trusted DHCP servers
Loop Protection	To prevent unknown unicast, broadcast and multicast loops in Layer 2 switching configurations.
Management
IEEE 1588v2 PTP	Support IEEE 1588 v2 PTP (Precision Time Protocol)
DHCP	DHCP Server: Support DHCP server to assign IP to DHCP clients DHCP client: The Dynamic Host Configuration Protocol (DHCP) is a standardized network protocol used on Internet Protocol (IP) networks for dynamically distributing network configuration parameters, such as IP addresses for interfaces and services
Event/Error Log	Support SNMP Trap/Syslog/SMTP
SNMP	SNMP version1, 2c and 3 with support for traps, and SNMP version 3 user-based security model (USM)
Remote Monitoring (RMON)	Embedded RMON agent supports RMON groups 1,2,3,9 (history, statistics, alarms, and events) for enhanced traffic management, monitoring and analysis
Firmware Upgrade	Web browser upgrade (HTTP/ HTTPs) and TFTP Upgrade through console port as well
Configuration Export/Import	update of the firmware controlling the switch
Port Mirroring	Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to N-1 (N is Switch’s Ports) ports can be mirrored to single destination port. A single session is supported
IEEE 802.1ab (LLDP)	Used by network devices for advertising their identities, capabilities, and neighbors on an IEEE 802ab local area network Support LLDP-MED (ANSI/TIA-1057) extensions
UPnP	The Universal Plug and Play Forum, an industry group of companies working to enable device-to-device interoperability by promoting Universal Plug and Play
CDP Aware	The CDP operation is restricted to decoding incoming CDP frames (The switch doesn’t transmit CDP frames). CDP frames are only decoded if LLDP on the port is enabled
s-Flow	The industry standard for monitoring high speed switched networks. It gives complete visibility into the use of networks enabling performance optimization, accounting/billing for usage, and defense against security threats
Web GUI Interface	Built-in switch configuration utility for browser-based device configuration
CLI	For users to configure/manage switches in command line modes
Dual Image	Independent primary and secondary images for backup while upgrading
NTP	Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched
Switch Management	HTTP/HTTPs SSH DHCP Client/ DHCPv6 Client Telnet IPv6 management
Diagnostics	Cable diagnostics Ping Syslog
Device Management System (DMS)
Graphical Monitoring	Topology view: Support intuitive way to configure and manage switches and devices with visual relations. Floor view: It’s easy to drag and drop PoE devices and help you to build smart workforces. Map view: Enhance efficiency to drag and drop devices and monitor surroundings on google map. Display visual chart of network traffic of all devices and monitor every port at any time from switches.
Find my Switch	Search your real switches quickly and manage directly.
Traffic Monitoring	Display visual chart of network traffic of all devices and monitor every port at any time from switches.
Trouble Shooting	Network diagnostic between master switch and devices. Support protection mechanism, such as rate-limiting to protect your devices from brute-force downloading
Power over Ethernet (PoE)
Port Configuration	Supports per port PoE configuration function
PoE Scheduling	Supports per port PoE scheduling to turn on/off the PoE devices (PDs)
Auto-checking	Check the link status of PDs. Reboot PDs if there is no responses
Power Delay	The switch provides power to the PDs based on delay time when PoE switch boots up, in order to protect switch from misuse of the PDs
Soft-Reboot PoE Non-stop	The switch will keep providing power to the PDs while during soft-reboot

GS-2800 and PSGS-2800 Series
L2+ Managed GbE Switches

The GS-2800 and PSGS-2800 series L2+ managed GbE switches are the next-generation Ethernet Switches offering full suite of L2 features, additional 10GbE uplink connections, better PoE functionality and usability, including advanced L3 features such as Static Route. In addition to the extensive management features, the GS-2800 and PSGS-2800 series also provide carrier Ethernet features such as ERPS/EPS/PTPv2, of which make them suitable for carrier Ethernet applications.

The GS-2800 and PSGS-2800 series consists of 4 non-PoE models which are GS-2852B, GS-2852XB, GS-2828XB and GS-2810XA, and 9 PoE+ models witch are PSGS-2852BL, PSGS-2852BF, PSGS-2852XBL, PSGS-2852XBF, PSGS-2828XBL, PSGS-2828XBF, PSGS-2828XBH, PSGS-2810XAF and PSGS-2810XAH. The series offer users with various options of port combinations and PoE+ budget, in order to meet different requirements in various applications.

The embedded Device Managed System (DMS) features provides users with the benefits of easy-to-use/configure/install/troubleshoot in the video surveillance, wireless access, and other SMBs and Enterprises applications. The GS-2800 and PSGS-2800 series are ideal to deliver management simplicity, better user experience, and lowest total cost of ownership.

Key Features

L2+ Managed features provide easier manageability, robust security and QoS.
Built in Device Management System (DMS)
ITU-T G.8031 Ethernet Linear Protection Switching (EPS)
ITU-T G.8032 Ethernet Ring Protection Switching (ERPS)
IEEE 1588v2 PTP
DHCP Server
IPv4/IPv6 Management
PoE Port configuration and scheduling
802.3at high power PoE plus standard
IEEE 802.3az EEE Energy Efficient Ethernet standard for green Ethernet

Benefits

Feature-rich Ethernet Switch for Enterprise-class

The switch delivers advanced functionality in L2+ managed switch including Layer 3 static route, DHCP server, IPv6 support, LLDP, etc. It also has comprehensive security features such as IP source guard and ACL to guard your network from unauthorized access.
It helps users to build on the market-leading price/performance with L2+ Managed GbE PoE switch, and provide secure, reliable and ease of use for enterprise/SMB deployments.
Easy to Install, Configure and Troubleshoot by Device Management System

The DMS provides embedded functions to facilitate devices management at anytime and anywhere. Its user-friendly interface helps users to manage devices intuitively.
It supports various IP device types (e.g. IP-phone, IP-camera, WiFi-AP) for end users to enhance manageability and save time/cost during installation/maintenance stages.
Lower Total Cost of Ownership (TCO) with Energy-efficient Design

It is designed to help customers to reduce power consumption and lower the TCO by Energy Efficient Ethernet (IEEE 802.3az) features. It can be used for customers to build a green Ethernet networking environment.
Advanced Power over Ethernet Management

The model includes PoE+ options to power IP devices with power-saving features like Power scheduling and PoE configuration.

Specifications

Port Configuration

Model Name	Total Ports	RJ45 (10M/100M/1G)	Uplinks	Console	Available PoE Power
GS-2852B	52	48	4 SFP	RJ45	--
GS-2852XB	52	48	4 SFP+	RJ45	--
GS-2828XB	28	24	4 SFP+	RJ45	--
GS-2810XA	10	8	2 SFP+	RJ45	--
PSGS-2852BL	52	48	4 SFP	RJ45	370W
PSGS-2852BF	52	48	4 SFP	RJ45	740W
PSGS-2852XBL	52	48	4 SFP+	RJ45	370W
PSGS-2852XBF	52	48	4 SFP+	RJ45	740W
PSGS-2828XBL	28	24	4 SFP+	RJ45	185W
PSGS-2828XBF	28	24	4 SFP+	RJ45	370W
PSGS-2828XBH	28	24	4 SFP+	RJ45	740W
PSGS-2810XAF	10	8	2 SFP+	RJ45	130W
PSGS-2810XAH	10	8	2 SFP+	RJ45	250W

Hardware Performance

Model Name	Forwarding Capacity (Mpps)	Switching Capacity (Gbps)	Mac Table(K)	Jumbo Frames(Bytes)
GS-2852B	77.3	104	32	10240
GS-2852XB	130.944	176	32	10240
GS-2828XB	95.238	128	32	10240
GS-2810XA	41.666	56	16	10240
PSGS-2852BL	77.3	104	32	10240
PSGS-2852BF	77.3	104	32	10240
PSGS-2852XBL	130.944	176	32	10240
PSGS-2852XBF	130.944	176	32	10240
PSGS-2828XBL	95.238	128	32	10240
PSGS-2828XBF	95.238	128	32	10240
PSGS-2828XBH	95.238	128	32	10240
PSGS-2810XAF	41.666	56	16	10240
PSGS-2810XAH	41.666	56	16	10240

Environmental Range

Operating Temperature		Storage Temperature		Operating Humidity	Altitude
Fahrenheit	Centigrade	Fahrenheit	Centigrade	Operating Humidity	Feet	Meters
32 to 122	0 to 50	-4 to 158	-20 to 70	Up to 95%, Non-condensing	<10000	<3000

Dimension Weights Humidity

Model Name	Dimension (WxHxD)		Weight		Mounting Type
Model Name	Millimeter	Inches	Kilograms	Pounds	Mounting Type
GS-2852B	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
GS-2852XB	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
GS-2828XB	442x44x211	17.4x1.7x8.3	<3.8	<8.36	Desktop, Rack
GS-2810XA	220x44x242	8.7x1.7x9.53	<2.3	<5.1	Desktop, Wall
PSGS-2852BL	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
PSGS-2852BF	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
PSGS-2852XBL	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
PSGS-2852XBF	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
PSGS-2828XBL	442x44x211	17.4x1.7x8.3	<3.8	<8.36	Desktop, Rack
PSGS-2828XBF	442x44x211	17.4x1.7x8.3	<3.8	<8.36	Desktop, Rack
PSGS-2828XBH	442x44x211	17.4x1.7x8.3	<3.8	<8.36	Desktop, Rack
PSGS-2810XAF	220x44x242	8.7x1.7x9.53	<2.3	<5.1	Desktop, Wall
PSGS-2810XAH	220x44x242	8.7x1.7x9.53	<2.3	<5.1	Desktop, Wall

Voltage and Frequency

AC Input Voltage and Frequency
Voltage	100-240 VAC
Frequency	50~60 Hz

PoE Power Capacity

Model Name	Available PoE Power	Number of Ports That Support PoE(15.4W) and PoE+(30.0W)
PSGS-2852BL	370W	Each of port 1 - 48 support PoE/ PoE+ within available PoE Power
PSGS-2852BF	740W	Each of port 1 - 48 support PoE/ PoE+ within available PoE Power
PSGS-2852XBL	370W	Each of port 1 - 48 support PoE/ PoE+ within available PoE Power
PSGS-2852XBF	740W	Each of port 1 - 48 support PoE/ PoE+ within available PoE Power
PSGS-2828XBL	185W	Each of port 1 - 24 support PoE/ PoE+ within available PoE Power
PSGS-2828XBF	370W	Each of port 1 - 24 support PoE/ PoE+ within available PoE Power
PSGS-2828XBH	740W	Each of port 1 - 24 support PoE/ PoE+ within available PoE Power
PSGS-2810XAF	130W	Each of port 1 - 8 support PoE/ PoE+ within available PoE Power
PSGS-2810XAH	250W	Each of port 1 - 8 support PoE/ PoE+ within available PoE Power

Certification

Electromagnetic Emissions (EMC)
CE, FCC Part 15 Class A, Others by Request

Software Features

Ring Management
ITU-T G.8031	Supports ITU-T G.8031 Ethernet Linear Protection Switching
ITU-T G.8032	Supports ITU-T G.8032 Ethernet Ring Protection Switching
Layer 2 Switching
Spanning Tree Protocol (STP)	Standard Spanning Tree 802.1d: Spanning Tree Protocol is an OSI layer-2 protocol which ensures a loop free topology for any bridged LAN Rapid Spanning Tree (RSTP) 802.1w: Rapid Spanning Tree Protocol, which provides for faster spanning tree convergence after a topology change Multiple Spanning Tree (MSTP) 802.1s: Multiple Spanning Tree Protocol. The MSTP protocol provides for multiple spanning tree instances
VLAN	802.1Q tag-based VLAN: Supports up to 4K VLANs simultaneously (out of 4096 VLAN IDs) Port-based VLAN: A port member of a VLAN can be isolated to other isolated ports on the same VLAN and Private VLAN Private VLAN Edge (PVE): Private VLANs are based on the source port mask, and there are no connections to VLANs. This means that VLAN IDs and Private VLAN IDs can be identical Voice VLAN: The Voice VLAN feature enables voice traffic forwarding on the Voice VLAN Guest VLAN: The IEEE 802.1X Guest VLAN feature allows a guest VLAN to be configured for each 802.1X port on the device to provide limited services to non-802.1X-compliant clients Q-in-Q (double tag) VLAN: Business customers of service providers often have specific requirements for VLAN IDs and the number of VLANs to be supported 802.1v Protocol VLAN: Classifying multiple protocols into a single VLAN often imposes VLAN boundaries that are inappropriate for some of the protocols, requiring the presence of a non-standard entity to relay between VLANs the frames bearing the protocols for which the VLAN boundaries are inappropriate MAC-based VLAN: The MAC-based VLAN feature allows incoming untagged packets to be assigned to a VLAN and thus classify traffic based on the source MAC address of the packet IP Subnet-Based VLAN: In an IP subnet–based VLAN, all the end workstations in an IP subnet are assigned to the same VLAN. In this VLAN, users can move their workstations without reconfiguring their network addresses Management VLAN: Management VLAN is used for managing the switch from a remote location by using protocols such as telnet, SSH, SNMP, syslog etc
LACP Trunking	Link Aggregation Control Protocol (LACP) IEEE 802.3ad: Controls whether LACP is enabled on this switch port. LACP will form an aggregation when 2 or more ports are connected to the same partner Up to 26 groups Up to 16 ports per group
GARP VLAN Registration Protocol (GVRP)	GVRP stands for GARP (Generic Attribute Registration Protocol) VLAN Registration Protocol. It’s a Layer 2 network protocol, for automatic configuration of switches in a VLAN network
DHCP Relay	Relay of DHCP traffic to DHCP server in different VLAN Works with DHCP Option 82
IGMP v1/v2/v3 Snooping	IGMP limits bandwidth-intensive multicast traffic to only the requesters. Supports 1024 multicast groups
IGMP Querier	IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router
IGMP Proxy	IGMP snooping with proxy reporting or report suppression actively filters IGMP packets in order to reduce load on the multicast router
MLD v1/v2 Snooping	Delivers IPv6 multicast packets only to the required receivers
Multicast VLAN Registration (MVR)	It uses a dedicated manually configured VLAN, called the multicast VLAN, to forward multicast traffic over Layer 2 network in conjunction with IGMP snooping
Layer 3 Switching
IPv4 Static Routing	IPv4 Unicast: Static Routing
IPv6 Static Routing	IPv6 Unicast: Static Routing
Quality of Service
Hardware Queue	Supports 8 hardware queues
Classification	Port based: Traffic QoS by Port 802.1p: VLAN priority based Layer 2 CoS QoS, Class of service is a parameter used in data and voice protocols to differentiate the types of payloads contained in the packet being transmitted DSCP based Differentiated Services (DiffServ) Layer 3 DSCP QoS: IP packets can carry either an IP precedence (IPP) value or a Differentiated Services Code Point (DSCP) value. QoS supports the use of either value because DSCP values are backward-compatible with IP precedence values Classification and re-marking TCP/IP ACLs: QoS by ACL
Rate Limiting	Ingress policer Egress shaping and rate control Per port
Scheduling	Strict priority and weighted round-robin (WRR): Weighted Round Robin is a scheduling algorithm that uses weights assigned to queues to determine how much data will be emptied from a queue before moving to the next queue
Security
ACLs	Supports up to 512 entries. Drop or rate limitation based on: Source and destination MAC, VLAN ID or IP address, protocol, port Differentiated services code point (DSCP) / IP precedence TCP/ UDP source and destination ports 802.1p priority Ethernet type Internet Control Message Protocol (ICMP) packets TCP flag
Port Security	Locks MAC addresses to ports, and limits the number of learned MAC address
IP Source Guard	Prevents illegal IP address from accessing to specific port in the switch
Storm Control	Prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast storm on a port
IEEE 802.1X	IEEE802.1X: RADIUS authentication, authorization and accounting, MD5 hash, guest VLAN, single/multiple host mode and single/multiple sessions Supports IGMP-RADIUS based 802.1X Dynamic VLAN assignment
TACACS+	Supports TACACS+ authentication. Switch as a client
Secure Shell (SSH)	SSH secures Telnet traffic in or out of the switch, SSH v1 and v2 are supported
Secure Sockets Layer (SSL)	SSL encrypts the http traffic, allowing advanced secure access to the browser-based management GUI in the switch
HTTPs and SSL (Secured Web)	Hyper Text Transfer Protocol Secure (HTTPS) is the secure version of HTTP
BPDU Guard	The BPDU guard, an enhancement to STP, removes a node that reflects BPDUs back in the network. It enforces the STP domain borders and keeps the active topology predictable by not allowing any network devices behind a BPDU guard-enabled port to participate in STP
DHCP Snooping	A feature acts as a firewall between untrusted hosts and trusted DHCP servers
Loop Protection	To prevent unknown unicast, broadcast and multicast loops in Layer 2 switching configurations.
Management
IEEE 1588v2 PTP	Support IEEE 1588 v2 PTP (Precision Time Protocol)
DHCP	DHCP Server: Support DHCP server to assign IP to DHCP clients DHCP client: The Dynamic Host Configuration Protocol (DHCP) is a standardized network protocol used on Internet Protocol (IP) networks for dynamically distributing network configuration parameters, such as IP addresses for interfaces and services
Event/Error Log	Support SNMP Trap/Syslog/SMTP
SNMP	SNMP version1, 2c and 3 with support for traps, and SNMP version 3 user-based security model (USM)
Remote Monitoring (RMON)	Embedded RMON agent supports RMON groups 1,2,3,9 (history, statistics, alarms, and events) for enhanced traffic management, monitoring and analysis
Firmware Upgrade	Web browser upgrade (HTTP/ HTTPs) and TFTP Upgrade through console port as well
Configuration Export/Import	update of the firmware controlling the switch
Port Mirroring	Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to N-1 (N is Switch’s Ports) ports can be mirrored to single destination port. A single session is supported
IEEE 802.1ab (LLDP)	Used by network devices for advertising their identities, capabilities, and neighbors on an IEEE 802ab local area network Support LLDP-MED (ANSI/TIA-1057) extensions
UPnP	The Universal Plug and Play Forum, an industry group of companies working to enable device-to-device interoperability by promoting Universal Plug and Play
CDP Aware	The CDP operation is restricted to decoding incoming CDP frames (The switch doesn’t transmit CDP frames). CDP frames are only decoded if LLDP on the port is enabled
s-Flow	The industry standard for monitoring high speed switched networks. It gives complete visibility into the use of networks enabling performance optimization, accounting/billing for usage, and defense against security threats
Web GUI Interface	Built-in switch configuration utility for browser-based device configuration
CLI	For users to configure/manage switches in command line modes
Dual Image	Independent primary and secondary images for backup while upgrading
NTP	Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched
Switch Management	HTTP/HTTPs SSH DHCP Client/ DHCPv6 Client Telnet IPv6 Management
Diagnostics	Cable diagnostics Ping Syslog
Device Management System (DMS)
Graphical Monitoring	Topology view: Support intuitive way to configure and manage switches and devices with visual relations Floor view: It’s easy to drag and drop PoE devices and help you to build smart workforces Map view: Enhance efficiency to drag and drop devices and monitor surroundings on google map Display visual chart of network traffic of all devices and monitor every port at any time from switches
Find my Switch	Search your real switches quickly and manage directly
Traffic Monitoring	Display visual chart of network traffic of all devices and monitor every port at any time from switches
Trouble Shooting	Network diagnostic between master switch and devices Support protection mechanism, such as rate-limiting to protect your devices from brute-force downloading
Power over Ethernet (PoE)
Port Configuration	Supports per port PoE configuration function
PoE Scheduling	Supports per port PoE scheduling to turn on/off the PoE devices (PDs).
Auto-checking	Check the link status of PDs. Reboot PDs if there is no responses
Power Delay	The switch provides power to the PDs based on delay time when PoE switch boots up, in order to protect switch from misuse of the PDs
Soft-Reboot PoE Non-stop	The switch will keep providing power to the PDs while during soft-reboot.

Download

Product Specification

Product Datasheet

Series Product Datasheet

Quick Installation Guide

Overview

Product Overview

Key Features	Customer Benefits
Comprehensive L2 Support	Provided comprehensive L2 switching capabilities with easy-to-use management to move your data smoother and faster
Carrier Ethernet Support	Provided the ideal combination of afford-ability and capabilities for Carrier networking (ERPS, EPS, PTPv2)
Ethernet Ring Protocol Switching (ITU G.8032)	Provided link redundancy ability to reduce networking service risks and guarantee network service risks and guarantee network service availability

Specification

Product Specification

MODEL NAME	PSGS-2828XBH
Product Description	28 ports GbE/10GbE L2+ Managed PoE+ Switch

Port Configuration

10M/100M/1G RJ45 Port		24
100M/1G/2.5G RJ45 Port		--
100M/1G/10G RJ45 Port		--
100M/1G/2.5G/5G/10G RJ45 Port		--
100M/1G SFP Port		--
GbE RJ45/SFP Combo Port		--
1G/2.5G SFP Port		--
1G/10G SFP+ Port		4
SFP28/QSFP+ Combo Port		--
1G/10G/25G SFP28 Port		--
QSFP+ (40G)		--
SFP56 (50G)		--
USB		--
Console Port		RJ45
Total Ports		28

PoE Function

IEEE802.3at (PoE+ 30W)
IEEE802.3af (PoE 15.4W)
UPoE(60W)		--
IEEE802.3bt (PoE++ 90W)		--
PoE Port		24
Available PoE Power		740W

HW Performance

Switching Bandwidth		128Gbps
Forwarding Performance		95.238Mpps
MAC Address		32K
Jumbo Frames		10240 Bytes

Environmental Specification

Operating Temperature		0°C to 50°C
Operating Humidity		5 to 95% RH
Storage Temperature		-20 to 70°C
Storage Humidity		5 to 95% RH

Mechanical Specification

Dimensions (H) x (W) x (D) mm		44 x 442 x 211
Weight		3.8 Kg
FAN Less		--

Power Source

AC Input		100V-240V
DC Input		--
Dual Input		--

Certifications

EN61000-4-5 (for RJ45 Port, Surge 6KV)		--
Certifications		CE/FCC Class A Others by Request

L2 Switching

Spanning Tree	IEEE802.1D (STP)
	IEEE802.1W (RSTP)
	IEEE802.1S (MSTP)
VLAN	802.1Q VLAN
	Port-Based
	VLAN Entries	4K
	Private VLAN
	Voice VLAN
	Guest VLAN
	Q-in-Q
	802.1v Protocol VLAN
	MAC-Based VLAN
	IP Subnet-Based VLAN
IEEE 802.3ad LACP	Dynamic Trunk
	Static Trunk
GARP/GVRP
IGMP Snooping
MLD Snooping
Multicast VLAN Registration (MVR)

L3 Features

Static Route
DHCP Server
Dynamic Routing		--

QoS Features

Class of Service	Port Based
	802.1p
	DSCP
	TCP/UDP Port
Rate Limiting	Ingress
	Egress
Priority Queue Scheduling	WRR
	Stri Priority
Hardware Queues		8

Security

ACLs	L2/L3/L4
	IPv6 Support
Port Security (MAC-based)
IP Source Guard
Storm Control
RADIUS Authentication 802.1x
TACACS+ Authentication
HTTPs and SSL (Secured Web)
BPDU Guard
STP Root Guard
DHCP Snooping
Loop Protection

Management

DHCP	Client
	Relay
	Option 66
	Option 67
	Option 82
Event/Error Log	Syslog
	SMTP (RFC821)
Management Access Filtering	SNMP
	Web UI
	Telnet
	SSH
PoE Management	Scheduling
	Auto-Checking
	Power Delay
	Soft-Reboot PoE Non-stop
SNMP (v1, v2c, v3)
RMON (1,2,3 & 9 Groups)
Software Upgrade
Configuration Export/Import
Port Mirroring
LLDP (IEEE802.1AB)
LLDP-MED (IEEE802.1AB)
CDP Aware
sFlow
IPv6 Management
NTP
First Time Wizard		--

Carrier Ethernet

SyncE		--
1588v2 PTP
G.8265.1/G.8275.1/G.8275.2		--
1588v2 PTP (stratum3)		--
OAM (IEEE802.3ah)		--
CFM (IEEE802.1ag)		--
PM (ITU-T Y.1731)		--
ELPS (ITU-T G.8031)
ERPS (ITU-T G.8032)
Rapid-Ring		--
RFC2544		--
Y.1564		--

Device Management System

Device Management	Topology View
	Floor View
	Map View
	Dashboard
	Traffic Monitoring
	Cable Diagnostics

Datasheet

PSGS-2828XBH L2+ Managed GbE Switch

Key Features

L2+ Managed features provide easier manageability, robust security and QoS
Built in Device Management System (DMS)
ITU-T G.8031 Ethernet Linear Protection Switching (EPS)
ITU-T G.8032 Ethernet Ring Protection Switching (ERPS)
IEEE 1588v2 PTP
DHCP Server
IPv4/IPv6 Management
PoE Port configuration and scheduling
IEEE 802.3af/at/UPoE/ PoE++ Power over Ethernet
IEEE 802.3az EEE Energy Efficient Ethernet standard for green Ethernet

Benefits

Feature-rich Ethernet Switch for Enterprise-class

The switch delivers advanced functionality in L2+ managed switch including Layer 3 static route, DHCP server, IPv6 support, LLDP, etc. It also has comprehensive security features such as IP source guard and Access Control List guard your network from unauthorized access.
It helps users to build on the market-leading price/performance with L2+ Managed GbE switch, and provide secure, reliable and ease of use for enterprise and SMB deployments.
Easy to Install Configure and Troubleshoot by Device Management System

The DMS provides embedded functions to facilitate devices management at anytime and anywhere. Its user-friendly interface helps users to manage devices intuitively.
It supports various IP device types (e.g. IP-phone, IP-camera, WiFi-AP, etc.) for end-users to enhance manageability and save your time/cost by detecting/configuring various types of devices automatically.
Lower Total Cost of Ownership (TCO) with Energy-efficient Design

It is designed to help companies to save power needs and reduce TCO by Energy Efficient Ethernet (IEEE 802.3az). It can be used for customers to build a green Ethernet networking environment.
Advanced Power over Ethernet Management

The model includes PoE++ options to power IP devices with power-saving features like Power scheduling and PoE configuration.

Specifications

Port Configuration

Total Ports	RJ45 (10M/100M/1G)	Uplinks	Console
28	24	4 SFP+	RJ45

Hardware Performance

Forwarding Capacity (Mpps)	Switching Capacity (Gbps)	Mac Table (K)	Jumbo Frames (Bytes)
95.238	128	32	10240

Environmental Range

Operating Temperature		Storage Temperature		Operating Humidity	Altitude
Fahrenheit	Centigrade	Fahrenheit	Centigrade	Operating Humidity	Feet	Meters
32 to 122	0 to 50	-4 to 158	-20 to 70	10% to 95%, Non-condensing	<10000	<3000

Dimension Weights Humidity

Dimension (WxHxD)		Weight		Mounting Type
Millimeter	Inches	Kilograms	Pounds	Mounting Type
442x 44x 211	17.4x 1.7x 8.3	<3.8	<8.36	Desktop, Rack

Voltage and Frequency

AC Input Voltage and Frequency
Voltage	Frequency
100-240 VAC	50~60 Hz

PoE Power Capacity

Available PoE Power	Number of Ports That Support PoE(15.4W) and PoE+(30.0W)
740W	Each of port 1 – 24 support PoE/ PoE+ within available PoE Power

Certification

Electromagnetic Emissions (EMC)
CE, FCC Part 15 Class A, Others by Request

Software Features

Ring Management
ITU-T G.8031	Supports ITU-T G.8031 Ethernet Linear Protection Switching
ITU-T G.8032	Supports ITU-T G.8032 Ethernet Ring Protection Switching
Layer 2 Switching
Spanning Tree Protocol (STP)	Standard Spanning Tree 802.1d: Spanning Tree Protocol is an OSI layer-2 protocol which ensures a loop free topology for any bridged LAN Rapid Spanning Tree (RSTP) 802.1w: Rapid Spanning Tree Protocol, which provides for faster spanning tree convergence after a topology change Multiple Spanning Tree (MSTP) 802.1s: Multiple Spanning Tree Protocol. The MSTP protocol provides for multiple spanning tree instances
VLAN	802.1Q tag-based VLAN: Supports up to 4K VLANs simultaneously (out of 4096 VLAN IDs) Port-based VLAN: A port member of a VLAN can be isolated to other isolated ports on the same VLAN and Private VLAN Private VLAN Edge (PVE): Private VLANs are based on the source port mask, and there are no connections to VLANs. This means that VLAN IDs and Private VLAN IDs can be identical Voice VLAN: The Voice VLAN feature enables voice traffic forwarding on the Voice VLAN Guest VLAN: The IEEE 802.1X Guest VLAN feature allows a guest VLAN to be configured for each 802.1X port on the device to provide limited services to non-802.1X-compliant clients Q-in-Q (double tag) VLAN: Business customers of service providers often have specific requirements for VLAN IDs and the number of VLANs to be supported 802.1v Protocol VLAN: Classifying multiple protocols into a single VLAN often imposes VLAN boundaries that are inappropriate for some of the protocols, requiring the presence of a non-standard entity to relay between VLANs the frames bearing the protocols for which the VLAN boundaries are inappropriate MAC-based VLAN: The MAC-based VLAN feature allows incoming untagged packets to be assigned to a VLAN and thus classify traffic based on the source MAC address of the packet IP Subnet-Based VLAN: In an IP subnet–based VLAN, all the end workstations in an IP subnet are assigned to the same VLAN. In this VLAN, users can move their workstations without reconfiguring their network addresses Management VLAN: Management VLAN is used for managing the switch from a remote location by using protocols such as telnet, SSH, SNMP, syslog etc
LACP Trunking	Link Aggregation Control Protocol (LACP) IEEE 802.3ad: Controls whether LACP is enabled on this switch port. LACP will form an aggregation when 2 or more ports are connected to the same partner Up to 14 groups Up to 16 ports per group
GARP VLAN Registration Protocol (GVRP/GVRP)	GVRP stands for GARP (Generic Attribute Registration Protocol) VLAN Registration Protocol. It’s a Layer 2 network protocol, for automatic configuration of switches in a VLAN network
DHCP Relay	Relay of DHCP traffic to DHCP server in different VLAN. Works with DHCP Option 82
IGMP v1/v2/v3 snooping	IGMP limits bandwidth-intensive multicast traffic to only the requesters. Supports 1024 multicast groups
IGMP Querier	IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router
IGMP Proxy	IGMP snooping with proxy reporting or report suppression actively filters IGMP packets in order to reduce load on the multicast router.
MLD v1/v2 snooping	Delivers IPv6 multicast packets only to the required receivers
Multicast VLAN Registration (MVR)	It uses a dedicated manually configured VLAN, called the multicast VLAN, to forward multicast traffic over Layer 2 network in conjunction with IGMP snooping
Layer 3 Switching
IPv4 Static Routing	IPv4 Unicast: Static routing
IPv6 Static Routing	IPv6 Unicast: Static routing
Quality of Service
Hardware Queue	Supports 8 hardware queues
Classification	Port based: Traffic QoS by Port 802.1p: VLAN priority based Layer 2 CoS QoS, Class of service is a parameter used in data and voice protocols to differentiate the types of payloads contained in the packet being transmitted DSCP based Differentiated Services (DiffServ) Layer 3 DSCP QoS: IP packets can carry either an IP precedence (IPP) value or a Differentiated Services Code Point (DSCP) value. QoS supports the use of either value because DSCP values are backward-compatible with IP precedence values Classification and re-marking TCP/IP ACLs: QoS by ACL
Rate Limiting	Ingress policer Strict priority and weighted round-robin (WRR): Weighted Round Robin is a scheduling algorithm that uses weights assigned to queues to determine how much data will be emptied from a queue before moving to the next queue
Scheduling	Strict priority and weighted round-robin (WRR)
Security
ACLs	Supports up to 512 entries. Drop or rate limitation based on: Source and destination MAC, VLAN ID or IP address, protocol, port Differentiated services code point (DSCP) / IP precedence TCP/ UDP source and destination ports 802.1p priority Ethernet type Internet Control Message Protocol (ICMP) packets TCP flag
Port Security	Locks MAC Addresses to ports, and limits the number of learned MAC addresses
IP Source Guard	Prevents illegal IP address from accessing to specific port in the switch
Storm control	Prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast storm on a port
IEEE 802.1X	IEEE802.1X: RADIUS authentication, authorization and accounting, MD5 hash, guest VLAN , single/multiple host mode and single/multiple sessions Supports IGMP-RADIUS based 802.1X Dynamic VLAN assignment
RADIUS/ TACACS+	Supports RADIUS and TACACS+ authentication. Switch as a client
Secure Shell (SSH)	SSH secures Telnet traffic in or out of the switch, SSH v1 and v2 are supported
HTTPs and SSL (Secured Web)	Hyper Text Transfer Protocol Secure (HTTPS) is the secure version of HTTP
BPDU Guard	The BPDU guard, an enhancement to STP, removes a node that reflects BPDUs back in the network. It enforces the STP domain borders and keeps the active topology predictable by not allowing any network devices behind a BPDU guard-enabled port to participate in STP
DHCP Snooping	A feature acts as a firewall between untrusted hosts and trusted DHCP servers
Loop Protection	To prevent unknown unicast, broadcast and multicast loops in Layer 2 switching configurations.
Management
IEEE 1588v2 PTP	Support IEEE 1588 v2 PTP (Precision Time Protocol)
DHCP	DHCP Server: Support DHCP server to assign IP to DHCP clients DHCP client: The Dynamic Host Configuration Protocol (DHCP) is a standardized network protocol used on Internet Protocol (IP) networks for dynamically distributing network configuration parameters, such as IP addresses for interfaces and services
Event/Error Log	Support SNMP Trap/Syslog/SMTP
SNMP	SNMP version1, 2c and 3 with support for traps, and SNMP version 3 user-based security model (USM)
Remote Monitoring (RMON)	Embedded RMON agent supports RMON groups 1,2,3,9 (history, statistics, alarms, and events) for enhanced traffic management, monitoring and analysis
Firmware Upgrade	Web browser upgrade (HTTP/ HTTPs) and TFTP Upgrade through console port as well
Configuration Export/Import	update of the firmware controlling the switch
Port Mirroring	Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to N-1 (N is Switch’s Ports) ports can be mirrored to single destination port. A single session is supported
IEEE 802.1ab (LLDP)	Used by network devices for advertising their identities, capabilities, and neighbors on an IEEE 802ab local area network Support LLDP-MED (ANSI/TIA-1057) extensions
UPnP	The Universal Plug and Play Forum, an industry group of companies working to enable device-to-device interoperability by promoting Universal Plug and Play
CDP Aware	The CDP operation is restricted to decoding incoming CDP frames (The switch doesn’t transmit CDP frames). CDP frames are only decoded if LLDP on the port is enabled
s-Flow	The industry standard for monitoring high speed switched networks. It gives complete visibility into the use of networks enabling performance optimization, accounting/billing for usage, and defense against security threats
Web GUI Interface	Built-in switch configuration utility for browser-based device configuration
CLI	For users to configure/manage switches in command line modes
Dual Image	Independent primary and secondary images for backup while upgrading
NTP	Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched
Switch Management	HTTP/HTTPs SSH DHCP Client/ DHCPv6 Client Telnet IPv6 management
Diagnostics	Cable diagnostics Ping Syslog
Device Management System (DMS)
Graphical Monitoring	Topology view: Support intuitive way to configure and manage switches and devices with visual relations. Floor view: It’s easy to drag and drop PoE devices and help you to build smart workforces. Map view: Enhance efficiency to drag and drop devices and monitor surroundings on google map. Display visual chart of network traffic of all devices and monitor every port at any time from switches.
Find my Switch	Search your real switches quickly and manage directly.
Traffic Monitoring	Display visual chart of network traffic of all devices and monitor every port at any time from switches.
Trouble Shooting	Network diagnostic between master switch and devices. Support protection mechanism, such as rate-limiting to protect your devices from brute-force downloading
Power over Ethernet (PoE)
Port Configuration	Supports per port PoE configuration function
PoE Scheduling	Supports per port PoE scheduling to turn on/off the PoE devices (PDs)
Auto-checking	Check the link status of PDs. Reboot PDs if there is no responses
Power Delay	The switch provides power to the PDs based on delay time when PoE switch boots up, in order to protect switch from misuse of the PDs
Soft-Reboot PoE Non-stop	The switch will keep providing power to the PDs while during soft-reboot

Series Datasheet

GS-2800 and PSGS-2800 Series
L2+ Managed GbE Switches

The embedded Device Managed System (DMS) features provides users with the benefits of easy-to-use/configure/install/troubleshoot in the video surveillance, wireless access, and other SMBs and Enterprises applications. The GS-2800 and PSGS-2800 series are ideal to deliver management simplicity, better user experience, and lowest total cost of ownership.

Key Features

L2+ Managed features provide easier manageability, robust security and QoS.
Built in Device Management System (DMS)
ITU-T G.8031 Ethernet Linear Protection Switching (EPS)
ITU-T G.8032 Ethernet Ring Protection Switching (ERPS)
IEEE 1588v2 PTP
DHCP Server
IPv4/IPv6 Management
PoE Port configuration and scheduling
802.3at high power PoE plus standard
IEEE 802.3az EEE Energy Efficient Ethernet standard for green Ethernet

Benefits

Feature-rich Ethernet Switch for Enterprise-class

The switch delivers advanced functionality in L2+ managed switch including Layer 3 static route, DHCP server, IPv6 support, LLDP, etc. It also has comprehensive security features such as IP source guard and ACL to guard your network from unauthorized access.
It helps users to build on the market-leading price/performance with L2+ Managed GbE PoE switch, and provide secure, reliable and ease of use for enterprise/SMB deployments.
Easy to Install, Configure and Troubleshoot by Device Management System

The DMS provides embedded functions to facilitate devices management at anytime and anywhere. Its user-friendly interface helps users to manage devices intuitively.
It supports various IP device types (e.g. IP-phone, IP-camera, WiFi-AP) for end users to enhance manageability and save time/cost during installation/maintenance stages.
Lower Total Cost of Ownership (TCO) with Energy-efficient Design

It is designed to help customers to reduce power consumption and lower the TCO by Energy Efficient Ethernet (IEEE 802.3az) features. It can be used for customers to build a green Ethernet networking environment.
Advanced Power over Ethernet Management

The model includes PoE+ options to power IP devices with power-saving features like Power scheduling and PoE configuration.

Specifications

Port Configuration

Model Name	Total Ports	RJ45 (10M/100M/1G)	Uplinks	Console	Available PoE Power
GS-2852B	52	48	4 SFP	RJ45	--
GS-2852XB	52	48	4 SFP+	RJ45	--
GS-2828XB	28	24	4 SFP+	RJ45	--
GS-2810XA	10	8	2 SFP+	RJ45	--
PSGS-2852BL	52	48	4 SFP	RJ45	370W
PSGS-2852BF	52	48	4 SFP	RJ45	740W
PSGS-2852XBL	52	48	4 SFP+	RJ45	370W
PSGS-2852XBF	52	48	4 SFP+	RJ45	740W
PSGS-2828XBL	28	24	4 SFP+	RJ45	185W
PSGS-2828XBF	28	24	4 SFP+	RJ45	370W
PSGS-2828XBH	28	24	4 SFP+	RJ45	740W
PSGS-2810XAF	10	8	2 SFP+	RJ45	130W
PSGS-2810XAH	10	8	2 SFP+	RJ45	250W

Hardware Performance

Model Name	Forwarding Capacity (Mpps)	Switching Capacity (Gbps)	Mac Table(K)	Jumbo Frames(Bytes)
GS-2852B	77.3	104	32	10240
GS-2852XB	130.944	176	32	10240
GS-2828XB	95.238	128	32	10240
GS-2810XA	41.666	56	16	10240
PSGS-2852BL	77.3	104	32	10240
PSGS-2852BF	77.3	104	32	10240
PSGS-2852XBL	130.944	176	32	10240
PSGS-2852XBF	130.944	176	32	10240
PSGS-2828XBL	95.238	128	32	10240
PSGS-2828XBF	95.238	128	32	10240
PSGS-2828XBH	95.238	128	32	10240
PSGS-2810XAF	41.666	56	16	10240
PSGS-2810XAH	41.666	56	16	10240

Environmental Range

Operating Temperature		Storage Temperature		Operating Humidity	Altitude
Fahrenheit	Centigrade	Fahrenheit	Centigrade	Operating Humidity	Feet	Meters
32 to 122	0 to 50	-4 to 158	-20 to 70	Up to 95%, Non-condensing	<10000	<3000

Dimension Weights Humidity

Model Name	Dimension (WxHxD)		Weight		Mounting Type
Model Name	Millimeter	Inches	Kilograms	Pounds	Mounting Type
GS-2852B	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
GS-2852XB	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
GS-2828XB	442x44x211	17.4x1.7x8.3	<3.8	<8.36	Desktop, Rack
GS-2810XA	220x44x242	8.7x1.7x9.53	<2.3	<5.1	Desktop, Wall
PSGS-2852BL	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
PSGS-2852BF	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
PSGS-2852XBL	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
PSGS-2852XBF	442x44x375	17.4x1.7x14.8	<5.62	<12.39	Desktop, Rack
PSGS-2828XBL	442x44x211	17.4x1.7x8.3	<3.8	<8.36	Desktop, Rack
PSGS-2828XBF	442x44x211	17.4x1.7x8.3	<3.8	<8.36	Desktop, Rack
PSGS-2828XBH	442x44x211	17.4x1.7x8.3	<3.8	<8.36	Desktop, Rack
PSGS-2810XAF	220x44x242	8.7x1.7x9.53	<2.3	<5.1	Desktop, Wall
PSGS-2810XAH	220x44x242	8.7x1.7x9.53	<2.3	<5.1	Desktop, Wall

Voltage and Frequency

AC Input Voltage and Frequency
Voltage	100-240 VAC
Frequency	50~60 Hz

PoE Power Capacity

Model Name	Available PoE Power	Number of Ports That Support PoE(15.4W) and PoE+(30.0W)
PSGS-2852BL	370W	Each of port 1 - 48 support PoE/ PoE+ within available PoE Power
PSGS-2852BF	740W	Each of port 1 - 48 support PoE/ PoE+ within available PoE Power
PSGS-2852XBL	370W	Each of port 1 - 48 support PoE/ PoE+ within available PoE Power
PSGS-2852XBF	740W	Each of port 1 - 48 support PoE/ PoE+ within available PoE Power
PSGS-2828XBL	185W	Each of port 1 - 24 support PoE/ PoE+ within available PoE Power
PSGS-2828XBF	370W	Each of port 1 - 24 support PoE/ PoE+ within available PoE Power
PSGS-2828XBH	740W	Each of port 1 - 24 support PoE/ PoE+ within available PoE Power
PSGS-2810XAF	130W	Each of port 1 - 8 support PoE/ PoE+ within available PoE Power
PSGS-2810XAH	250W	Each of port 1 - 8 support PoE/ PoE+ within available PoE Power

Certification

Electromagnetic Emissions (EMC)
CE, FCC Part 15 Class A, Others by Request

Software Features

Ring Management
ITU-T G.8031	Supports ITU-T G.8031 Ethernet Linear Protection Switching
ITU-T G.8032	Supports ITU-T G.8032 Ethernet Ring Protection Switching
Layer 2 Switching
Spanning Tree Protocol (STP)	Standard Spanning Tree 802.1d: Spanning Tree Protocol is an OSI layer-2 protocol which ensures a loop free topology for any bridged LAN Rapid Spanning Tree (RSTP) 802.1w: Rapid Spanning Tree Protocol, which provides for faster spanning tree convergence after a topology change Multiple Spanning Tree (MSTP) 802.1s: Multiple Spanning Tree Protocol. The MSTP protocol provides for multiple spanning tree instances
VLAN	802.1Q tag-based VLAN: Supports up to 4K VLANs simultaneously (out of 4096 VLAN IDs) Port-based VLAN: A port member of a VLAN can be isolated to other isolated ports on the same VLAN and Private VLAN Private VLAN Edge (PVE): Private VLANs are based on the source port mask, and there are no connections to VLANs. This means that VLAN IDs and Private VLAN IDs can be identical Voice VLAN: The Voice VLAN feature enables voice traffic forwarding on the Voice VLAN Guest VLAN: The IEEE 802.1X Guest VLAN feature allows a guest VLAN to be configured for each 802.1X port on the device to provide limited services to non-802.1X-compliant clients Q-in-Q (double tag) VLAN: Business customers of service providers often have specific requirements for VLAN IDs and the number of VLANs to be supported 802.1v Protocol VLAN: Classifying multiple protocols into a single VLAN often imposes VLAN boundaries that are inappropriate for some of the protocols, requiring the presence of a non-standard entity to relay between VLANs the frames bearing the protocols for which the VLAN boundaries are inappropriate MAC-based VLAN: The MAC-based VLAN feature allows incoming untagged packets to be assigned to a VLAN and thus classify traffic based on the source MAC address of the packet IP Subnet-Based VLAN: In an IP subnet–based VLAN, all the end workstations in an IP subnet are assigned to the same VLAN. In this VLAN, users can move their workstations without reconfiguring their network addresses Management VLAN: Management VLAN is used for managing the switch from a remote location by using protocols such as telnet, SSH, SNMP, syslog etc
LACP Trunking	Link Aggregation Control Protocol (LACP) IEEE 802.3ad: Controls whether LACP is enabled on this switch port. LACP will form an aggregation when 2 or more ports are connected to the same partner Up to 26 groups Up to 16 ports per group
GARP VLAN Registration Protocol (GVRP)	GVRP stands for GARP (Generic Attribute Registration Protocol) VLAN Registration Protocol. It’s a Layer 2 network protocol, for automatic configuration of switches in a VLAN network
DHCP Relay	Relay of DHCP traffic to DHCP server in different VLAN Works with DHCP Option 82
IGMP v1/v2/v3 Snooping	IGMP limits bandwidth-intensive multicast traffic to only the requesters. Supports 1024 multicast groups
IGMP Querier	IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router
IGMP Proxy	IGMP snooping with proxy reporting or report suppression actively filters IGMP packets in order to reduce load on the multicast router
MLD v1/v2 Snooping	Delivers IPv6 multicast packets only to the required receivers
Multicast VLAN Registration (MVR)	It uses a dedicated manually configured VLAN, called the multicast VLAN, to forward multicast traffic over Layer 2 network in conjunction with IGMP snooping
Layer 3 Switching
IPv4 Static Routing	IPv4 Unicast: Static Routing
IPv6 Static Routing	IPv6 Unicast: Static Routing
Quality of Service
Hardware Queue	Supports 8 hardware queues
Classification	Port based: Traffic QoS by Port 802.1p: VLAN priority based Layer 2 CoS QoS, Class of service is a parameter used in data and voice protocols to differentiate the types of payloads contained in the packet being transmitted DSCP based Differentiated Services (DiffServ) Layer 3 DSCP QoS: IP packets can carry either an IP precedence (IPP) value or a Differentiated Services Code Point (DSCP) value. QoS supports the use of either value because DSCP values are backward-compatible with IP precedence values Classification and re-marking TCP/IP ACLs: QoS by ACL
Rate Limiting	Ingress policer Egress shaping and rate control Per port
Scheduling	Strict priority and weighted round-robin (WRR): Weighted Round Robin is a scheduling algorithm that uses weights assigned to queues to determine how much data will be emptied from a queue before moving to the next queue
Security
ACLs	Supports up to 512 entries. Drop or rate limitation based on: Source and destination MAC, VLAN ID or IP address, protocol, port Differentiated services code point (DSCP) / IP precedence TCP/ UDP source and destination ports 802.1p priority Ethernet type Internet Control Message Protocol (ICMP) packets TCP flag
Port Security	Locks MAC addresses to ports, and limits the number of learned MAC address
IP Source Guard	Prevents illegal IP address from accessing to specific port in the switch
Storm Control	Prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast storm on a port
IEEE 802.1X	IEEE802.1X: RADIUS authentication, authorization and accounting, MD5 hash, guest VLAN, single/multiple host mode and single/multiple sessions Supports IGMP-RADIUS based 802.1X Dynamic VLAN assignment
TACACS+	Supports TACACS+ authentication. Switch as a client
Secure Shell (SSH)	SSH secures Telnet traffic in or out of the switch, SSH v1 and v2 are supported
Secure Sockets Layer (SSL)	SSL encrypts the http traffic, allowing advanced secure access to the browser-based management GUI in the switch
HTTPs and SSL (Secured Web)	Hyper Text Transfer Protocol Secure (HTTPS) is the secure version of HTTP
BPDU Guard	The BPDU guard, an enhancement to STP, removes a node that reflects BPDUs back in the network. It enforces the STP domain borders and keeps the active topology predictable by not allowing any network devices behind a BPDU guard-enabled port to participate in STP
DHCP Snooping	A feature acts as a firewall between untrusted hosts and trusted DHCP servers
Loop Protection	To prevent unknown unicast, broadcast and multicast loops in Layer 2 switching configurations.
Management
IEEE 1588v2 PTP	Support IEEE 1588 v2 PTP (Precision Time Protocol)
DHCP	DHCP Server: Support DHCP server to assign IP to DHCP clients DHCP client: The Dynamic Host Configuration Protocol (DHCP) is a standardized network protocol used on Internet Protocol (IP) networks for dynamically distributing network configuration parameters, such as IP addresses for interfaces and services
Event/Error Log	Support SNMP Trap/Syslog/SMTP
SNMP	SNMP version1, 2c and 3 with support for traps, and SNMP version 3 user-based security model (USM)
Remote Monitoring (RMON)	Embedded RMON agent supports RMON groups 1,2,3,9 (history, statistics, alarms, and events) for enhanced traffic management, monitoring and analysis
Firmware Upgrade	Web browser upgrade (HTTP/ HTTPs) and TFTP Upgrade through console port as well
Configuration Export/Import	update of the firmware controlling the switch
Port Mirroring	Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to N-1 (N is Switch’s Ports) ports can be mirrored to single destination port. A single session is supported
IEEE 802.1ab (LLDP)	Used by network devices for advertising their identities, capabilities, and neighbors on an IEEE 802ab local area network Support LLDP-MED (ANSI/TIA-1057) extensions
UPnP	The Universal Plug and Play Forum, an industry group of companies working to enable device-to-device interoperability by promoting Universal Plug and Play
CDP Aware	The CDP operation is restricted to decoding incoming CDP frames (The switch doesn’t transmit CDP frames). CDP frames are only decoded if LLDP on the port is enabled
s-Flow	The industry standard for monitoring high speed switched networks. It gives complete visibility into the use of networks enabling performance optimization, accounting/billing for usage, and defense against security threats
Web GUI Interface	Built-in switch configuration utility for browser-based device configuration
CLI	For users to configure/manage switches in command line modes
Dual Image	Independent primary and secondary images for backup while upgrading
NTP	Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched
Switch Management	HTTP/HTTPs SSH DHCP Client/ DHCPv6 Client Telnet IPv6 Management
Diagnostics	Cable diagnostics Ping Syslog
Device Management System (DMS)
Graphical Monitoring	Topology view: Support intuitive way to configure and manage switches and devices with visual relations Floor view: It’s easy to drag and drop PoE devices and help you to build smart workforces Map view: Enhance efficiency to drag and drop devices and monitor surroundings on google map Display visual chart of network traffic of all devices and monitor every port at any time from switches
Find my Switch	Search your real switches quickly and manage directly
Traffic Monitoring	Display visual chart of network traffic of all devices and monitor every port at any time from switches
Trouble Shooting	Network diagnostic between master switch and devices Support protection mechanism, such as rate-limiting to protect your devices from brute-force downloading
Power over Ethernet (PoE)
Port Configuration	Supports per port PoE configuration function
PoE Scheduling	Supports per port PoE scheduling to turn on/off the PoE devices (PDs).
Auto-checking	Check the link status of PDs. Reboot PDs if there is no responses
Power Delay	The switch provides power to the PDs based on delay time when PoE switch boots up, in order to protect switch from misuse of the PDs
Soft-Reboot PoE Non-stop	The switch will keep providing power to the PDs while during soft-reboot.

Download

Download

Product Specification

Product Datasheet

Series Product Datasheet

Quick Installation Guide

Advantage and Features

Rubytech ODM Advantage

Low MOQ for selected models, and FREE Software Customization service to make sure the switches work with link partner or IP-relative device. Support easy Customization Platform, so as to implement the Private-Label customization efficiently and economically.

Customization Features

ODM Customization Service for PoE NVR provide ODM flexibility (M-ATX and Mini-ITX), plus scalability (8/16/24-port PoE, 2/3/4/6 HDD tray), instant support (case alarm, PoE auto-reboot mechanism), and easy manageability (CGI / API / SNMP implemented). More than 200 active SKU of Ethernet Switches/NVRs for our ODM customers to choose from.

ODM Customization

Experienced HW / SW customization services. More than 200 active SKU of Ethernet Switches/NVRs for our ODM customers to choose from.
ODM Customization under your brand is no longer a pain point. To offer low threshold, implementing your business become more efficiently and economically.
Get Golden Sample in one-month, 1st Mass Production in another month and delivery L/T of 4~6 weeks low MoQ for selected 24 models. Create absolutely remarkable standard operation procedure to ODM customer. All products are designed and manufactured in Taiwan.

Focuses on ODM / OEM business, and ISO-9001 / ISO-14001/ ISO-27001/ ISO-27034 certified.
We provide an industrial-grade of product longevity including x86 and switch platform, with PoE/ PoE+/ PoE++(IEEE 802.3af/at/bt) support within compact form factor /dimension of PoE NVRs, so as to provide users with best-fit solutions.
RubyTech reduces the Tech Support Cost/Time/Effort, moreover, provide differentiation value-adds from All Other Competitors.
Better Cost/Performance & Customer Satisfaction of PoE NVRs, help to provide more revenue streams from the PoE NVRs.

Design, Manufacturing, and Service Partner in Taiwan
More than 40-year experience in the networking industry.
Experienced HW/SW Customization Services
ODM Business Focus
Value-Added Support Platform
Experienced HW / SW customization services. FREE Tier-2/3 Tech Support for all field problems.
RubyTech has successful experiences supplying the best cost/performance NVRs to our ODM partners worldwide.
Being the approved vendor who is now supplying PoE NVRs to Tier-1 and Tier-2 ODM brand customers.

Hardware

Logo Customization

Front-bezel logo customization.

Switch Case Size Customization

Small Form Factor Case Size.

Mylar Customization

Front-bezel Label / Mylar customization.

ITU-T Customization

ITU-T G.8032 ERPS.

Combination Port Customization

Combination of RJ-45/SFP/SFP+ ports counts.

Temperature Customization

Wide Temperature Support (-20℃~60℃)

PoE Power Customization

PoE / PoE+ / PoE++ Power Customization.

FAN Customization

Inteligent FAN Speed Control/Fan-less Design.

CPU Customization (PoE NVR)

Intel / AMD CPU

GPU Customization (PoE NVR)

Add stand-alone Low Profile graphics card

HDD / SSD tray Customization (PoE NVR)

2/3/4/6 HDD/SSD tray Customization.

OS Customization (PoE NVR)

Win Server / Win 10 / Ubuntu / Linux…

Software

Switch GUI

Customization that best meets your business needs Switch UI

Integrate Third-Party API

SW Customization Service to integrate Third-Party management software.

Device Management System

When we embed Device Management System to the switch, a new era of possibilities begins. One where IT administrators are empowered with system of easy-to-use, and where maintenance is effortless and troubleshooting works in a moment.
One UI & iPush enable your business to operate switches in ways never before possible.

Technical Support Online

Easy Technical Support Online without client computer and third party remote control software.

Product Overview

Product Specification

PSGS-2828XBH L2+ Managed GbE Switch

Key Features

Benefits

Feature-rich Ethernet Switch for Enterprise-class

Easy to Install Configure and Troubleshoot by Device Management System

Lower Total Cost of Ownership (TCO) with Energy-efficient Design

Advanced Power over Ethernet Management

Specifications

GS-2800 and PSGS-2800 SeriesL2+ Managed GbE Switches

Key Features

Benefits

Feature-rich Ethernet Switch for Enterprise-class

Easy to Install, Configure and Troubleshoot by Device Management System

Lower Total Cost of Ownership (TCO) with Energy-efficient Design

Advanced Power over Ethernet Management

Specifications

Download

Product Overview

Product Specification

PSGS-2828XBH L2+ Managed GbE Switch

Key Features

Benefits

Feature-rich Ethernet Switch for Enterprise-class

Easy to Install Configure and Troubleshoot by Device Management System

Lower Total Cost of Ownership (TCO) with Energy-efficient Design

Advanced Power over Ethernet Management

Specifications

GS-2800 and PSGS-2800 SeriesL2+ Managed GbE Switches

Key Features

Benefits

Feature-rich Ethernet Switch for Enterprise-class

Easy to Install, Configure and Troubleshoot by Device Management System

Lower Total Cost of Ownership (TCO) with Energy-efficient Design

Advanced Power over Ethernet Management

Specifications

Download

Advantage and Features

Rubytech ODM Advantage

Customization Features

About ODM SERVICE

ODM Customization

Risk commitment

Why Rubytech?

OEM / ODM Switch Customization Options

Hardware

Logo Customization

Switch Case Size Customization

Mylar Customization

ITU-T Customization

Combination Port Customization

Temperature Customization

PoE Power Customization

FAN Customization

CPU Customization (PoE NVR)

GPU Customization (PoE NVR)

HDD / SSD tray Customization (PoE NVR)

OS Customization (PoE NVR)

Software

Switch GUI

Integrate Third-Party API

Device Management System

Technical Support Online

GS-2800 and PSGS-2800 Series
L2+ Managed GbE Switches

GS-2800 and PSGS-2800 Series
L2+ Managed GbE Switches