Transition Networks SM24TAT2DPA User manual

Transition Networks SM24TAT2DPA Install Guide
33702 Rev. A https://www.transition.com Page 1of 23
SM24TAT2DPA
Managed Switch, 24-port Gigabit PoE+,
2-port SFP/RJ-45 Combo
Install Guide
33702 Rev. A

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Safety Warnings and Cautions
These products are not intended for use in life support products where failure of a product could reasonably be
expected to result in death or personal injury. Anyone using this product in such an application without express written
consent of an officer of Transition Networks does so at their own risk, and agrees to fully indemnify Transition
Networks for any damages that may result from such use or sale.
Attention: this product, like all electronic products, uses semiconductors that can be damaged by
ESD (electrostatic discharge). Always observe appropriate precautions when handling.
NOTE: Emphasizes important information or calls your attention to related features or
instructions.
WARNING: Alerts you to a potential hazard that could cause personal injury.
CAUTION: Alerts you to a potential hazard that could cause loss of data, or damage the system
or equipment.
SM24TAT2DPA Install Guide - TN PN 33702 Rev. A
Record of Revisions
Rev Date Description of Changes
A 11/7/16 Initial release for software v6.48.
Trademark notice
All trademarks and registered trademarks are the property of their respective owners. All other products or
service names used in this publication are for identification purposes only, and may be trademarks or
registered trademarks of their respective companies. All other trademarks or registered trademarks
mentioned herein are the property of their respective holders.
Copyright restrictions
© 2016 Transition Networks, Inc. All rights reserved. No part of this work may be reproduced or used in
any form or by any means (graphic, electronic, or mechanical) without written permission from Transition
Networks.
Address comments on this product or manual to:
Transition Networks Inc.
10900 Red Circle Drive, Minnetonka, MN 55343
tel: [phone] | toll free: 1.800.526.9267 | fax: [phone]
[email protected] | [e-mail] | [email protected]m
web: https://www.transition.com

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Compliance and Safety Statements
FCC-CLASS A: This equipment has been tested and found to comply with the limits for a Class A
computing device pursuant to Subpart J of part 15 of FCC Rules, which are designed to provide reasonable
protection against such interference when operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
You are cautioned that changes or modifications not expressly approved by the party responsible for
compliance could void your authority to operate the equipment.
You may use unshielded twisted-pair (UTP) for RJ-45 connections - Category 3 or better for 10 Mbps
connections, Category 5 or better for 100 Mbps connections, Category 5, 5e, or 6 for 1000 Mbps
connections. For fiber optic connections, you may use 50/125 or 62.5/125 micron multimode fiber or
9/125 micron single-mode fiber.
CE MARK DECLARATION OF CONFORMANCE FOR EMI AND SAFETY (EEC): This equipment has
been tested and found to comply with the protection requirements of European Emission Standard
EN55022/EN61000-3 and the Generic European Immunity Standard EN55024.
Declaration of Conformity
Related Manuals
The following manuals give specific information on how to use the switch:
 SM24TAT2DPA Quick Start Guide, 33701
 SM24TAT2DPA Install Guide, 33702
 SM24TAT2DPA Web User Guide, 33703
 SM24TAT2DPA CLI Reference, 33704
To access the manuals, firmware, datasheet or other documentation for your product, enter your model
number (SM24TAT2DPA) in the “Search” box at our website at https://www.transition.com.
For Transition Networks Drivers, Firmware, Manual, etc. go to the Product Support webpage (no logon
required). For Transition Networks Application Notes, Brochures, Data Sheets, Specifications, etc. go to the
Support Library (no registration required).

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Contents
Safety Warnings and Cautions................................................................................................................. i
Compliance and Safety Statements........................................................................................................ 3
1. Introduction........................................................................................................................................ 5
Overview ............................................................................................................................................. 5
Front Panel.......................................................................................................................................... 5
LED Descriptions............................................................................................................................ 5
Mode/Reset button.......................................................................................................................... 7
Back Panel.......................................................................................................................................... 8
2. Installation....................................................................................................................................... 9
Package Contents............................................................................................................................. 10
Mounting the Switch in a 19-inch Rack..............................................................................................11
Mounting the Switch on Desk or Shelf.............................................................................................. 12
Connecting the AC Power Cord........................................................................................................ 12
Installing SFP Modules ..................................................................................................................... 13
Connecting Console Port.................................................................................................................. 13
3. Initial Configuration via Web GUI .................................................................................................. 14
Initial Switch Configuration Procedure.............................................................................................. 14
4. Troubleshooting .............................................................................................................................. 16
5. Specifications .................................................................................................................................. 39
Hardware Specifications ................................................................................................................... 39
Software Specifications....................................................................................................................... 2
6. Service, Warranty & Tech Support................................................................................................. 43
Warranty............................................................................................................................................ 43
Contact Us......................................................................................................................................... 44

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1. Introduction
Overview
The Transition Networks SM24TAT2DPA L2+ Managed PoE+ Switch provides
high-performance, IEEE-compliant network solutions. They include powerful management
features that can boost performance, and increase productivity. This manual describes
hardware installation and basic troubleshooting for these managed switches.
Front Panel
The SM24TAT2DPA switch front panel has system and port LEDs for installation and
troubleshooting and the Mode/Reset button.
The SM24TAT2DPA front panel is shown and described below.
LED Descriptions
The LEDs on the front panel provide users with switch status checking and monitoring.
The three types of LEDs are System, Mode, and Port Status. The following section details the
functions and descriptions of the LED indicators.
System LED
The System LED indicates if the switch is powered up correctly or not, or, indicates if there is a
system alarm triggered for troubleshooting.
LED Color State Description
System
Green On The switch is powered ON correctly.
Off The switch is not receiving power.
Red On An abnormal state, such as exceeding operating temperature range, has been
detected in the switch.

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Mode LEDs
The Mode LEDs indicate the mode of all RJ45/SFP ports on the switch. You can press the
Mode/Reset button sequentially to switch between the two different modes
(Link/Activity/Speed mode and PoE mode).
LED Color State Description
Link/Act/Speed Green On The Port Status LEDs are displaying link status, network activity and speed of each
port.
PoE Green On The RJ45 Port Status LEDs are displaying
PoE
powering status of each port.
Press and hold the Mode/Reset button for less than 2 seconds to change LED modes
(Link/Act/Speed Mode or PoE Mode); you can check the port status by reading the LED
behaviors per the table below.
Port Status LEDs
indicates the current status of each RJ45/SFP port. You can check these LEDs to understand the
port status in different modes, after changing the mode by pressing the Mode/Reset button.
When Link/Act/Speed Mode LED Lit
LED Color State Description
RJ45
Ports
Green On
The port is enabled and established a link to connected device,
and the connection speed is 1000Mbps.
Green Blinking
The port is transmitting/receiving packets, and the connection
speed is 1000Mbps.
Amber On
The port is enabled and established a link to the connected
device, and the connection speed is 10/100Mbps.
Amber Blinking
The port is transmitting/receiving packets, and the connection
speed is 10/100Mbps.
-- Off The port has no active network cable connected, or it is not established a link to connected device. Otherwise, the port
may have been disabled through the switch user interface.
SFP
Ports
Green On
The port is enabled and established a link to connected device,
and the connection speed is 1000Mbps.
Green Blinking
The port is transmitting/receiving packets, and the connection
speed is 1000Mbps.
Amber On
The port is enabled and established a link to connected device,
and the connection speed is 100Mbps.
Amber Blinking
The port is transmitting/receiving packets, and the connection
speed is 100Mbps.

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-- Off The port has no active network cable connected, or it is not established a link to connected device. Otherwise, the port
may have been disabled through the switch user interface.
When PoE Mode LED Lit
LED Color State Description
RJ45
Ports
Green On The port is enabled and supplying power to connected device.
Amber On
An abnormal state, such as overload status, has been detected
in the switch.
-- Off
The port has no active network cable connected, or it is not
connected a PoE PD device. Otherwise, the port may have been
disabled through the switch user interface.
Mode/Reset button
Press the Mode/Reset button for a specific period of time to perform these tasks:
□Change Port Status LED Mode: to read the port status correctly in the two different modes
(Link/Act/Speed mode or PoE mode).
□Reset the Switch: to reboot and get the switch back to the previous configuration settings saved.
□Restore the Switch to Factory Defaults: to restore the original factory default settings back to the
switch.
Note: The table below describes the task being performed by reading the LED behaviors while pressing
the Mode/Reset button. Once the LED behaviors are correctly displayed, you may release the button.
Table 1: Mode/Reset Button Descriptions
Task to Perform Press the Button for SYS LED
Behavior Port Status LED Behavior
Change LED Mode 0 ~ 2 seconds ON
Green LED status will change based on the mode selected.
Reset the Switch 2 ~ 7 seconds Blinking
Green All LEDs OFF
Restore to Defaults 7 ~ 12 seconds Blinking
Green All LEDs Stay ON

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Back Panel
The SM24TAT2DPA back panel is shown below.

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2. Installation
CAUTION: Circuit devices are sensitive to static electricity, which can damage their delicate
electronics. Dry weather conditions or walking across a carpeted floor may cause you to acquire a static
electrical charge. To protect your device, always:
•Touch the metal chassis of your computer to ground the static electrical charge before you pick up the
circuit device.
•Pick up the device by holding it on the left and right edges only.
•If you need to connect an outdoor device to this device with cable then you must add an arrester on
the cable between outdoor device and this device.
Fig. Add an arrester between outdoor device and this switch
NOTE:The switch is an indoor device; if it will be used in an outdoor environment or
connects with some outdoor device, then it must use a lightning arrester to protect the switch.
W ARNING :
Self-demolition on Product is strictly prohibited. Damage caused by self-demolition will be charged
for repairing fees.
Do not place product outdoors or where sandstorms occur.
Before installation, make sure input power supply and product specifications are compatible to each
other.
To reduce the risk of electric shock, disconnect all AC or DC power cords to completely remove
power from the unit.
Before importing / exporting configuration please make sure the firmware version is the same.
After firmware upgrade, switch automatically moves configuration to latest firmware version.
Warning: this case must be grounded. No DC input may be grounded. The SM24TAT2DPA is compliant with 802.3at
in Environment A when using an isolated power supply. For 802.3at Environment B applications, use mid-span injector
(s), e.g. MIL-L100i, L1000i-at, between this switch’s PSE port and link partner PD port.

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Package Contents
Verify that you received these iterms.
SM24TAT2DPA GbE Management Switch
Four adhesive rubber feet
Mounting Accessory (for 19“Rack Shelf, Optional)
Quick Start Guide
AC Power cord
Console cable
Save the packaging for possible future use.

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Mounting the Switch in a 19-inch Rack
Step1. Attach the mounting brackets to both sides of the chassis with screws.
Figure 4 Attaching mounting brackets to the switch
Step2. Place the switch on a rack shelf in the rack. Push the switch in until the oval holes in the brackets
align with the mounting holes in the rack posts.
Step3. Attach the mounting brackets to the rack posts with screws.
Figure 5 Attaching mounting brackets to the rack post

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Mounting the Switch on Desk or Shelf
Step1. Verify that the workbench is sturdy and reliably grounded.
Step2. The rubber feet are included in the accessory kit. Attach the four adhesive rubber feet to the
bottom of the switch.
Figure 6 Attaching the Rubber Feet
Connecting the AC Power Cord
Figure 7 Connecting the AC power cord to the AC power receptacle
Step1. Connect one end of the AC power cord to the AC power receptacle on the switch.
Step2. Connect the other end of the AC power cord to the AC power outlet.
Step3. Examine the power LED. If it is ON, the power connection is correct.

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Installing SFP Modules
You can install or remove a mini-GBIC SFP from a mini-GBIC slot without having to power off the switch.
See the Transition Networks SFP webpage for more information on our line of Optical Devices. See the
specific SFP manual for information specificto your SFP module (cautions and warnings, compliance,
installing, fiber cable characteristics, connecting fiber cables, removing an SFP module, DMI/DDMI data,
etc.
Step1. Insert the module into the switch port. The SFP label must be facing upward on the top port; the
SFP label must be facing downward on the bottom port.
Step2. Press firmly to ensure that the module seats into the connector.
Figure 8 Installing an SFP Module into a SFP Module Slot
Connecting Console Port
Figure 9 Connecting Console Port
Start a terminal application such as HyperTerminal on the computer. Configure with these parameters
 Default Baud rate—115,200 bps
 Parity—None
 Stop bit—1
 Data bits—8
 Flow control—none
The default username is “admin” and password is “admin”.
Refer to the SM24TAT2DPA CLI Reference for Command Line Interface (CLI) command information.

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3. Initial Configuration via Web GUI
After you power up the switch for the first time, you can configure the switch using a web
browser. For more information about managing the switch, see the SM24TAT2DPA Web
User Guide.
To begin with the initial configuration stage, you must reconfigure your PC’s IP address
and subnet mask so as to make sure the PC can communicate with the switch. After
changing PC’s IP address (for example, 192.168.1.250), then you can access the Web
interface of the switch using the switch’s default IP address as shown below.
Note: The factory default IP address of the switch is 192.168.1.1.
The factory default Subnet Mask of switch is 255.255.255.0.
Initial Switch Configuration Procedure
The initial switch configuration procedure is as follows:
1. Power up the PC that you will use for the initial configuration. Please make sure the
PC has the Ethernet RJ45 connector to be connected to the switch via standard
Ethernet LAN cable.
2. Reconfigure the PC’s IP address and Subnet Mask as below, so that it can
communicate with the switch. The method to change the PC’s IP address, for
example, for a PC running Windows®7/8.x/10, is as follows:
Step 1: Type “network and sharing“ into the Search box in the Start Menu
Step 2: Select Network and Sharing Center
Step 3: Click on Change adapter settings on the left of PC screen
Note: You can also skip step 1 to 3, by pressing WinKey+Rand type ”ncpa.cpl”
command to get to step 4 directly.
Step 4: Right-click on your local adapter and select Properties
Step 5: In the Local Area Connection Properties window highlight Internet
Protocol Version 4 (TCP/IPv4) then click the Properties button.
Note: Be sure to record all your PC’s current IP settings to be able to restore them later.
Step 6: Select the radio button Use the following IP address and enter in the IP for
the PC (e.g., any IP address not in use, and in between 192.168.1.2 and 192.168.1.254),
Subnet mask (e.g. 255.255.255.0), and Default Gateway that corresponds with your
network setup. Then enter your Preferred and Alternate DNS server addresses.
Step 7: Click OK to change the PC’s IP address.
1. Power up the switch to be initially configured, and wait until it has finished its
start-up processes.
2. Connect the PC to any port on the switch using a standard Ethernet cable, and
check the port LED on the switch to make sure the link status of the PC’s is OK.
3. Run your Web browser on the PC, enter the factory default IP address to access the
switch’s Web interface.

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If your PC is configured correctly, the switch login page displays as shown below.
Figure 9: Web Interface login page
If you do not see the above login page, perform the following steps:
□Refresh the web page.
□Check to see if there is an IP conflict issue.
□Clean browser cookies and temporary Internet files.
□Check your PC settings again and repeat step 2.
4. Enter the factory default username and password on the login page, and click
“Login” to log into the switch.
Note:
The factory default Username of the switch is admin.
The factory default Password of the switch is admin.
For information on managing the switch via the Web UI, see the SM24TAT2DPA Web
User Guide.
N
OTE
:For a detailed description of the management features, refer to the full
Web User Guide.

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4. Troubleshooting
Troubleshooting Chart
The following table lists Issues, Causes, and Actions to resolve possible problems.
Table 4 Troubleshooting Chart
Issue Cause Action
SYSTEM LED is Off The switch is not
receiving power.
1. Check if correct power cord is
connected firmly to the switch and to
the AC outlet socket.
2. Perform power cycling the switch by
unplugging and plugging the power
cord back into the switch.
3. If the LED is still off, try to plug the
power cord into different AC outlet
socket to make sure correct AC source
is supplied.
SYSTEM LED is Red An abnormal state has been detected by the
switch.
Check the switch system log from the
Web UI to see any abnormal state (e.g.
exceeding operating temperature
range) and take corresponding actions
to resolve.
Port Status LED is
Off in the
Link/Act/Speed
Mode
The port is not connected
or the connection is not
working.
1. Check if the cable connector plug is
firmly inserted and locked into the port
at both the switch and the connected
device.
2. Make sure the connected device is
up and running correctly.
3. If the symptom still exists, try
different cable or different port, in
order to identify if it is related to the
cable or specific port.
4. Check if the port is disabled in the
configuration settings via Web UI.
Port Status LED is
Off in the PoE Mode The port is not supplying power
1. Check if the cable connector plug is
firmly inserted and locked into the port
at both the switch and the connected
device.
2. Make sure the correct Ethernet
cables are used.
3. If the symptom still exists, try
different cable or different port, in
order to identify if it is related to the
cable or specific port.
4. Check if the port is disabled in the
configuration settings via the Web UI.

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5. Specifications
Hardware Specifications
Table 5 Hardware Specifications
Port Configuration
Total Ports
RJ45 (10M/100M/1G)
Uplinks (100M/1G)
Console
26
24
2 RJ45/SFP Combo
RJ45
Hardware Performance
Forwarding
Capacity
Switching Capacity Mac Table Jumbo Frames
38.68 Mpps
52 Gbps
8 K
9216 Bytes
Environmental Range
Operating Temperature
Storage Temperature
Altitude
Fahrenheit: 32 to 113
Centigrade: 0 to 45
Fahrenheit: -4 to 158
Centigrade: -20 to 70
Feet: < 10000
Meters: < 3000
Dimensions, Weights, Humidity
Dimensions (WxHxD)
Weight
Operating Humidity
Millimeters: 442 x 44 x 211
Inches: 17.4 x 1.73 x 8.3
Kilograms: 3.3
Pounds: 5.9
10% to 90%
non-condensing
Voltage and Frequency
AC Voltage and Frequency
Voltage
100-240 VAC
Frequency
50~60 Hz
Surge Protection
6KV
PoE Power Capacity
Available PoE Power
Number of Ports That Support PoE(15.4W) and PoE+(30.0W)
370W
Each of port 1 - 24 support PoE/ PoE+ within available PoE Power.
Max power budget: 130 W. (30W for four ports simultaneously;
15.4 W for 8 ports simultaneously).
Certifications
Electromagnetic Emissions (EMC)
CE, FCC Part 15 Class A
IEC61950-1 Safety Compliance

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Software Specifications
Layer 2 Switching
Spanning Tree Protocol (STP) 
Standard Spanning Tree 802.1d
Rapid Spanning Tree (RSTP) 802.1w
Multiple Spanning Tree (MSTP) 802.1s
Trunking
Link Aggregation Control Protocol (LACP) IEEE 802.3ad
Up to 13 groups
Up to 4 ports per group
VLAN
Supports up to 4K VLANs simultaneously (out of 4096 VLAN IDs)
Port-based VLAN
802.1Q tag-based VLAN
MAC-based VLAN
Management VLAN
Private VLAN Edge (PVE)
Q-in-Q (double tag) VLAN
Voice VLAN

GARP VLAN Registration Protocol (GVRP)
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
Layer 3 Switching
IPv4 Static Routing
IPv4 Unicast: Static routing
IPv6 Static Routing
IPv6 Unicast: Static routing
Security
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
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
Layer 2 Isolation
Private VLAN Edge
PVE (also known as protected ports) provides L2 isolation between
clients in the same VLAN. Supports multiple uplinks

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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
RADIUS/ TACACS+
Supports RADIUS and TACACS+ authentication. Switch is a client
Storm Control
Prevents traffic on a LAN from being disrupted by a broadcast,
multicast, or unicast storm on a port
DHCP Snooping
A feature acts as a firewall between untrusted hosts and trusted
DHCP servers
ACLs
Supports up to 256 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
Quality of Service
Hardware Queue
Supports 8 hardware queues
Scheduling 
Strict priority and weighted round-robin (WRR)

Queue assignment based on DSCP and class of service
Classification

Port based
802.1p VLAN priority based
IPv4/IPv6 precedence / DSCP based
Differentiated Services (DiffServ)

Classification and re-marking ACLs
Rate Limiting 
Ingress policer
Egress shaping and rate control
Per port
Management
DHCP Server
Support DHCP server to assign IP to DHCP clients
Zero Touch Upgrade
Upgrade single switch automatically when you get notification
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
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. Asingle session is
supported.
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
s-Flow
The industry standard for monitoring high speed switched

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networks. It gives complete visibility into the use of networks
enabling performance optimization, accounting/billing for usage,
and defense against security threats
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 extensions
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
SNMP
SNMP version1, 2c and 3 with support for traps, and SNMP
version 3 user-based security model (USM)
Firmware Upgrade 
Web browser upgrade (HTTP/ HTTPs) and TFTP
Upgrade through console port as well
NTP
Network Time Protocol (NTP) is a networking protocol for clock
synchronization between computer systems over packet-switched
Other Management

HTTP/HTTPs; SSH
DHCP Client/ DHCPv6 Client
Cable Diagnostics
Ping
Syslog
Telnet Client

IPv6 Management
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
.