AirLive SNMP-24MGB User Manual

SNMP-24MGB

24+8 Combo Pure Gigabit SNMP Managed Switch

User’s Manual

No part of this publication may be reproduced in any form or by any means, whether electronic, mechanical, photocopying, or recording without the written consent of OvisLink Corp.

OvisLink Corp. has made the best effort to ensure the accuracy of the information in this user’s guide. However, we are not liable for the inaccuracies or errors in this guide. Please use with caution. All information is subject to change without notice

All Trademarks are properties of their respective holders.

AirLive SNMP-24MGB User’s Manual

Table of Contents

1. Introduction................................................................................................1

1.1 Overview..............................................................................................1

1.2 How to Use This Guide........................................................................1

1.3 Firmware Upgrade and Tech Support ..................................................2

1.4 Features...............................................................................................3

2. Installing the SNMP-24MGB......................................................................5

2.2 Before You Start...................................................................................5

2.3 Package Content .................................................................................5

2.4 Optional Accessories ...........................................................................6

2.5 Knowing your SNMP-24MGB ..............................................................7

2.6 Hardware Installation ...........................................................................7

2.6.1 Attaching Rubber Feet.................................................................................7

2.6.2 Rack-mounted Installation ...........................................................................8

2.6.3 Power On.....................................................................................................9

2.7 LED Table ............................................................................................9

3. Configuring the SNMP-24MGB ...............................................................11

3.1 Important Information.........................................................................11

3.2 Prepare your PC ................................................................................11

3.3 Management Interface.......................................................................12

3.4 Introduction to Web Management......................................................15

3.4.1 Getting into Web Management ..................................................................15

4. Web Management in SNMP-24MGB .......................................................17

4.1 Menu Structure of SNMP-24MGB......................................................17

4.2 System...............................................................................................19

4.2.1 IP Configuration.........................................................................................19

4.2.2 Account Configuration................................................................................21

4.2.3 Time Configuration ....................................................................................22

4.2.4 IP Configuration.........................................................................................24

4.2.5 Loop Detection ..........................................................................................27

4.2.6 Management Policy ...................................................................................28

4.2.7 System Log................................................................................................31

4.2.8 Virtual Stack...............................................................................................32

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Table of Contents

4.3 Port ....................................................................................................34

4.3.1 Port Configuration......................................................................................34

4.3.2 Port Status .................................................................................................36

4.3.3 Simple Counter..........................................................................................40

4.3.4 Detail Counter............................................................................................42

4.3.5 Power Saving ............................................................................................45

4.4 VLAN .................................................................................................46

4.4.1 VLAN Mode ...............................................................................................46

4.4.2 Tag-based Group .......................................................................................47

4.4.3 Port-based Group ......................................................................................49

4.4.4 Ports ..........................................................................................................51

4.4.5 Port Isolation..............................................................................................52

4.4.6 Management..............................................................................................53

4.5 MAC...................................................................................................54

4.5.1 Mac Address Table ....................................................................................54

4.5.2 Static Filter.................................................................................................56

4.5.3 Static Forward............................................................................................56

4.5.4 MAC Alias ..................................................................................................57

4.5.5 MAC Table .................................................................................................58

4.6 GVRP.................................................................................................59

4.6.1 GVRP Configuration ..................................................................................60

4.6.2 GVRP Counter...........................................................................................62

4.6.3 GVRP VLAN Group Information ................................................................64

4.7 QoS....................................................................................................65

4.7.1 Port QoS Configuration..............................................................................65

4.7.2 QoS Control List ........................................................................................67

4.7.3 Rate Limiters .............................................................................................72

4.7.4 Storm Control.............................................................................................74

4.7.5 Wizard .......................................................................................................75

4.8 SNMP ................................................................................................84

4.9 ACL ....................................................................................................86

4.9.1 ACL Ports Configuration ............................................................................86

4.9.2 ACL Rate Limiter Configuration .................................................................88

4.9.3 Access Control List ....................................................................................89

4.9.4 Wizard .....................................................................................................119

4.10 IP MAC Binding..............................................................................127

4.10.1 IP MAC Binding Configuration ...............................................................127

4.10.2 IP MAC Binding Dynamic Entry .............................................................128

4.11 802.1X Configuration .....................................................................129

4.11.1 Server ....................................................................................................133

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4.11.2 Port Configuration ..................................................................................135

4.11.3 802.1X Status.........................................................................................137

4.11.4 802.1X Statistics ....................................................................................138

4.12 Trunking Configuration...................................................................139

4.12.1 Trunking Port Setting/Port......................................................................140

4.12.2 Aggregation View...................................................................................142

4.12.3 LACP system Priority.............................................................................143

4.13 STP Configuration..........................................................................144

4.13.1 STP Status.............................................................................................144

4.13.2 STP Configuration .................................................................................146

4.13.3 STP Port Configuration..........................................................................148

4.14 MSTP.............................................................................................151

4.14.1 MSTP Status..........................................................................................151

4.14.2 MSTP Region Config.............................................................................152

4.14.3 Instant View ...........................................................................................152

4.15 Mirror .............................................................................................159

4.16 Multicast.........................................................................................161

4.16.1 IGMP Mode ...........................................................................................161

4.16.2 IGMP Proxy ...........................................................................................162

4.16.3 IGMP Snooping .....................................................................................163

4.16.4 IGMP Membership.................................................................................164

4.16.5 MVR.......................................................................................................165

4.16.6 MVID......................................................................................................166

4.16.7 Group Allow ...........................................................................................167

4.16.8 MVR Group Membership .......................................................................168

4.17 Alarm Configuration .......................................................................169

4.17.1 Event .....................................................................................................170

4.17.2 Email......................................................................................................171

4.18 DHCP Snooping.............................................................................172

4.18.1 DHCP Snooping State ...........................................................................172

4.18.2 DHCP Snooping Entry ...........................................................................173

4.18.3 DHCP Snooping Client ..........................................................................174

4.19 Save / Store ...................................................................................175

4.19.1 Factory Default ......................................................................................176

4.19.2 Save Start ..............................................................................................176

4.19.3 Save user ..............................................................................................177

4.19.4 Restore user ..........................................................................................177

4.20 Export / Import ...............................................................................178

4.21 Diagnostics ....................................................................................179

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4.21.1 Diag .......................................................................................................179

4.21.2 Ping .......................................................................................................180

4.22 Maintenance ..................................................................................181

4.22.1 Reset Device .........................................................................................181

4.22.2 Software Upload ....................................................................................181

4.23 Logout............................................................................................182

5. CLI Management in SNMP-24MGB.......................................................183

5.1 Connecting to the Console Port.......................................................183

5.2 Login in the Console Interface .........................................................183

5.3 Command of CLI..............................................................................185

5.3.1 Global Command of CLI ..........................................................................186

5.3.2 Local Command of CLI............................................................................193

6. Troubleshooting.....................................................................................309

6.1 Incorrect connections.......................................................................309

6.2 Diagnosing LED Indicators ..............................................................310

6.3 Cabling.............................................................................................310

7. Specifications.........................................................................................311

8. Network Glossary ..................................................................................314

AirLive SNMP-24MGB User’s Manual

1. Introduction

1.1 Overview

The SNMP-24MGB is a 24-port Gigabit L2+ Managed Switch with 8-Port Gigabit TP/SFP slots and 16-Port Gigabit SFP slots. This Switch can be used to build high-performance switched workgroup networks. The switch can be managed through RS-232 serial port via directly connection, or through Ethernet port using CLI or Web-based management unit, associated with SNMP agent. In addition, the switch features comprehensive and useful functions such as QoS, Spanning Tree, VLAN, Port Trunking, Bandwidth Control, Port Security, SNMP/RMON, IGMP Snooping capability via the intelligent software. It is suitable for both metro-LAN and office applications.

Note: The switch was for using indoor purpose, if it was used in outdoor environ ment or con nect with ca ble

to outdoor then it must to use a lightning arrester to protect the switch.

1.2 How to Use This Guide

SNMP-24MGB is a SNMP managed Switch with many functions. It is recommended that you read through the entire user’s guide whenever possible. The user guide is divided into different chapters. You should read at least go through the first 2 chapters before attempting to install the device.

1.3 Firmware Upgrade and Tech Support

If you encounter a technical issue that can not be resolved by information on this guide, we recommend that you visit our comprehensive website support at www.airlive.com. The tech support FAQ are frequently updated with latest information.

In addition, you might find new firmwares that either increase software functions or provide bug fixes for SNMP-24MGB. You can reach our on-line support center at the following link: http://www.airlive.com/support/support_2.jsp

Since 2009, AirLive has added the “Newsletter Instant Support System” on our website. AirLive Newsletter subscribers receives instant email notifications when there are new download or tech support FAQ updates for their subscribed airlive models. To become an AirLive newsletter member, please visit: http://www.airlive.com/member/member_3.jsp

AirLive SNMP-24MGB User’s Manual

1. Introduction

1.4 Features

 Confirms to IEEE802.3 10BASE-T, 802.3u 100BASE-TX, 802.3ab 1000BASE-T,

802.3z Gigabit fiber

 16 x Mini-GBIC ports + 8 x 1000Base-T/Mini-GBIC ports (Combo) for Optional Fiber

Connection

 High back-plane bandwidth 48Gbps

 8K entry MAC address table and 4K VLAN support

 Power Saving with "ActiPHY Power Management" and "PerfectReach Power

Management" techniques.

 IEEE802.1Q Q-in-Q nested VLAN support

 Supports concisely the status of port and easily port configuration

 Supports per port traffic monitoring counters

 Supports a snapshot of the system Information when you login

 Supports port mirror function

 Supports the static trunk function

 Supports 802.1Q VLAN

 Supports user management and limits three users to login

 Maximal packet length can be up to 9600 bytes for jumbo frame application

 Supports DHCP Broadcasting Suppression to avoid network suspended or crashed

 Supports to send the trap event while monitored events happened

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1. Introduction

 Supports default configuration which can be restored to overwrite the current

configuration which is working on via web browser and CLI

 Supports on-line plug/unplug SFP modules

 Supports Quality of Service (QoS) for real time applications based on the information

taken from Layer 2 to Layer 4, such as VoIP

 Built-in web-based management and CLI management, providing a more convenient UI

for the user

 Supports port mirror function with ingress/egress traffic

 Supports rapid spanning tree (802.1w RSTP), multiple spanning tree (802.1s MSTP)

 Supports 802.1X port security on a VLAN

 Supports IP-MAC-Port Binding for LAN security

 Supports user management and only first login administrator can configure the device.

The rest of users can only view the switch

 SNMP access can be disabled and prevent from illegal SNMP access

 Supports Ingress, Non-unicast and Egress Bandwidth rating management with a

resolution of 1Mbps

 The trap event and alarm message can be transferred via e-mail

 Supports diagnostics to let administrator knowing the hardware status

 Supports loop detection to protect the switch crash when the networking has looping

issue

 HTTP and TFTP for firmware upgrade, system log upload and configuration file

import/export

 Supports remote boot the device through user interface and SNMP

 Supports NTP network time synchronization and daylight saving

 Supports 120 event log records in the main memory and display on the local console

AirLive SNMP-24MGB User’s Manual

2. Installing the SNMP-24MGB

2. Installing the

This chapter describes the hardware features and the hardware installation procedure for the SNMP-24MGB. For software configuration, please go to chapter 3 for more details.

SNMP-24MGB

2.2 Before You Start

It is important to read through this section before you install the SNMP-24MGB.

 The maximum cabling distance is 100 meters.

 Do not create a network loop.

 Always check the LED lights for troubleshooting

2.3 Package Content

Unpack the contents of the SNMP-24MGB and verify them against the checklist below.

 One unit of SNMP-24MGB

 Power Cord

 Four Rubber Feet

 RS-232 cable

 User Guide (CD-ROM)

Quick Installation Guide



 Rack-mounted Kit

SNMP-24MGB Power Cord Four Rubber Feet

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2. Installing the SNMP-24MGB

RS-232 cable User Guide (CD-ROM) Quick Installation Guide Rack-mounted Kit

Compare the contents of your SNMP-24MGB package with the standard checklist above. If any item is missing or damaged, please contact your local dealer for service.

2.4 Optional Accessories

The SNMP-24MGB has the following optional accessories which you can purchase from AirLive

 1000Base-SX MiniGBIC Transceiver (Model: SFP-SX) or 1000Base-LX MiniGBIC

Transceiver (Model: SFP-LX-10) is for your SFP slots of SNMP-24MGB, it allows

you to use fiber cable for extending transmission distance.

Note: While installing MiniGBIC into SFP slot of SNMP-24MGB, please notice the direction of MiniGBIC is correct, and make sure that MiniGBIC is indeed installed in the SNMP-24MGB.

AirLive SNMP-24MGB v2 User’s Manual

2.5 Knowing your SNMP-24MGB

Below are descriptions and diagrams of the product:

2. Installing the SNMP-24MGB

2.6 Hardware Installation

Set the SNMP-24MGB on a sufficiently large flat space with a power outlet nearby. The surface where you put your SNMP-24MGB should be clean, smooth, level and sturdy. Make sure there is enough clearance around the SNMP-24MGB to allow attachment of cables, power cord and allow air circulation.

2.6.1 Attaching Rubber Feet

A. Make sure mounting surface on the bottom of the SNMP-24MGB is grease and dust

free.

B. Remove adhesive backing from your Rubber Feet.

C. Apply the Rubber Feet to each corner on the bottom of the SNMP-24MGB. These

footpads can prevent the Switch from shock/vibration.

AirLive SNMP-24MGB User’s Manual

2.6.2 Rack-mounted Installation

2. Installing the SNMP-24MGB

The SNMP-24MGB comes with a rack-mounted kid and can be mounted in an EIA standard size, 19-inch Rack. The SNMP-24MGB can be placed in a wiring closet with other equipment. Perform the following steps to rack mount the SNMP-24MGB:

A. Position one bracket to align with the holes on one side of the SNMP-24MGB and

secure it with the smaller bracket screws. Then attach the remaining bracket to the other side of the SNMP-24MGB.

B. After attached mounting brackets, position the SNMP-24MGB in the rack by lining up

the holes in the brackets with the appropriate holes on the rack. Secure the SNMP-24MGB to the rack with a screwdriver and the rack-mounting screws.

AirLive SNMP-24MGB v2 User’s Manual

2. Installing the SNMP-24MGB

Note: For proper ventilation, allow about at least 4 inches (10 cm) of clearance on the

front and 3.4 inches (8 cm) on the back of the Switch. This is especially important for enclosed rack installation.

2.6.3 Power On

Connect the power cord to the power socket on the rear panel of the SNMP-24MGB. The other side of power cord connects to the power outlet. The internal power supply of the SNMP-24MGB works with voltage range of AC in the 100-240VAC, frequency 50~60Hz. Check the power indicator on the front panel to see if power is properly supplied.

2.7 LED Table

The LED Indicators gives real-time information of systematic operation status. The following table provides descriptions of LED status and their meaning.

AirLive SNMP-24MGB User’s Manual

LED Status Description

Green Power On

Power

Off

Green The port is connecting with the device.

Power is not connected

2. Installing the SNMP-24MGB

LNK/ACT

10/100/1000Mbps

SFP(LINK/ACT)

Blink The port is receiving or transmitting data.

Off

No device attached.

Green In 1000Mbps connection speed

Orange In 100Mbps connection speed

Off In half-duplex mode

Green The port is connecting with the device.

Blink The port is receiving or transmitting data.

Off Module connection is not good

AirLive SNMP-24MGB v2 User’s Manual

3. Configuring the SNMP-24MGB

3. Configuring the

The SNMP-24MGB offers many different types of management interface. You can configure through web browser (http), console (terminal), CLI. In this chapter, we will explain SNMP-24MGB’s available management interfaces and how to get into them. Then, we will provide the introduction on Web Management and recommended initial settings. For detail explanations on Web Management functions, please go to Chapter 4. For Console interface, please go to Chapter 5.

SNMP-24MGB

3.1 Important Information

The following information will help you to get start quickly. However, we recommend you to read through the entire manual before you start. Please note the username and password are case sensitive.

 The default IP address is 192.168.1.1  The default Subnet Mask is 255.255.255.0  The default Gateway is 192.168.1.254  The default username is admin  The default password is airlive

3.2 Prepare your PC

The SNMP-24MGB can be managed remotely by a PC through RJ-45 cable. The default

IP address of the SNMP-24MGB is 192.168.1.1 with a subnet mask of 255.255.255.0.

This means the IP address of the PC should be in the range of 192.168.1.2 to

192.168.1.253.

To prepare your PC for management with the SNMP-24MGB, please do the following:

1. Connect your PC directly to the copper port of SNMP-24MGB

2. Set your PC’s IP address manually to 192.168.1.100 (or other address in the same

subnet)

AirLive SNMP-24MGB User’s Manual

3. Configuring the SNMP-24MGB

You are ready now to configure the SNMP-24MGB by using your PC.

3.3 Management Interface

The SNMP-24MGB can be configured using on the management interfaces below:

 Web Management (HTTP): You can manage your SNMP-24MGB by simply typing its

IP address in the web browser. Most functions of SNMP-24MGB can be accessed by web management inter face. We recommend using this interface for initial

configurations. To begin, simply enter SNMP-24MGB’s IP address (default is

192.168.1.1) on the web browser. The default username is admin and password is airlive.

 Console Management (Terminal): SNMP-24MGB can be managed through terminal

emulation program or Hyper Terminal.

When the connection between SNMP-24MGB and PC is ready, turn on the PC and run a terminal emulation program or Hyper Terminal and configure its communication parameters to match the following default characteristics of the console port

AirLive SNMP-24MGB v2 User’s Manual

3. Configuring the SNMP-24MGB

Baud Rate: 115200 bps Data Bits: 8 Parity: none Stop Bit: 1 Flow control: None

After finishing the parameter settings, click “OK“. When the blank screen shows up, press Enter key to bring out the login prompt. Key in the “admin“(default value) for the User name and “airlive” for the Password (use Enter key to switch), then press Enter

key and the Main Menu of console management appears. Please see below figure for login screen.

 Telnet Management (Terminal): SNMP-24MGB can be managed through telnet. To

AirLive SNMP-24MGB User’s Manual

3. Configuring the SNMP-24MGB

use the telnet, please open the command line windows. Then type “telnet 192.168.1.1” to start.

When asking for username and password, please enter “admin” as username and “airlive”

as password.

After you login successfully, the prompt will be shown as “#“ if you are the first login person and your authorization is administrator; otherwise it may show “$“. See the following two

figures. The former means you behave as an administrator and have the access right of the system. As to the latter, it means you behave as a guest and are only allowed to view the system without the permission to do any setting for this switch.

AirLive SNMP-24MGB v2 User’s Manual

3. Configuring the SNMP-24MGB

3.4 Introduction to Web Management

The SNMP-24MGB offers Web Management interfaces for users. Users can easily access and control SNMP-24MGB via web browsers. The Web-Based Management supports Internet Explorer 5.0. It is based on Java Applets with an aim to reduce network bandwidth consumption, enhance access speed and present an easy viewing screen.

Note: By default, IE5.0 or later version does not allow Java Applets to open sockets. The

user has to explicitly modify the browser setting to enable Java Applets to use network ports.

3.4.1 Getting into Web Management

Web Management (HTTP)

1. Launch the Internet Explorer.

2. Type http://192.168.1.1. Press “Enter”.

AirLive SNMP-24MGB User’s Manual

3. Configuring the SNMP-24MGB

3. The login screen appears.

4. Key in the user name and password. The default user name is “admin” and password is “airlive”.

5. Click “Enter” or ”Login”, then the home screen of the Web-based management

appears.

AirLive SNMP-24MGB v2 User’s Manual

4. Web Management in SNMP-24MGB

4. Web Management in

In this chapter, we will explain all settings in web management interface. Please be sure

to read through Chapter 3’s “Introduction to Web Management” first.

SNMP-24MGB

4.1 Menu Structure of SNMP-24MGB

The web management menu of SNMP-24MGB is divided into 3 parts: Top Bar, Side Menu Bar, and Main Screen.

Top Bar

Side Menu

 Top Bar: It display panel GUI. You can direct click the port on the Switch figure

on the top of web page. Then, you will see the port information. On the left-top corner, there is a pull-down list for Auto Logout. For the sake of security, we provide auto-logout function to protect you from illegal user as you are leaving. If you do not choose any selection in Auto Logout list, it means you turn on the Auto Logout

Main Screen

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4. Web Management in SNMP-24MGB

function and the system will be logged out automatically when no action on the device 3 minutes later. If OFF is chosen, the screen will keep as it is. Default is ON.

 Side Menu: All management functions will show in Side Menu, you can choose any

one of them to configure its setting. The detailed introduction for all management function will explain in below chapters. The following list is the full function tree for web user interface.

 Main Screen: Once choosing any function of Side Menu, the configuration page of

the function will show in Main Screen. You can configure the function by instruction

of manual.

AirLive SNMP-24MGB v2 User’s Manual

4. Web Management in SNMP-24MGB

Root

System

Port

VLAN

MAC

GVRP

QoS

SNMP

IP MAC Binding

802.1X

Trunk

STP

MSTP

Mirrorin

Multicast

larm

DHCP

Save/Restore

Maintenance

4.2 System

4.2.1 IP Configuration

Function name:

System Information

Function description:

Export/Imports

Diagnostics

Logout

AirLive SNMP-24MGB User’s Manual

Show the basic system information.

4. Web Management in SNMP-24MGB

Parameter description:

Model name:

The product name of this device.

System description:

The product description of this device.

Location:

Basically, it is the location where this switch is put. It can be defined by user.

Contact:

For easily managing and maintaining device, you may write down the contact person and phone here for getting help soon. You can configure this parameter through the device’s user interface or SNMP.

Device name:

The name of the switch. It can be defined by user. Default is SNMP-24MGB.

System up time:

The time accumulated since this switch is powered up. Its format is day, hour, minute, second.

AirLive SNMP-24MGB v2 User’s Manual

Current time:

Show the system time of the switch. Its format is day of week, month, day, hours : minutes : seconds, year. For instance, Mon, March. 03, 14:54:07, 2008.

BIOS version:

The version of the BIOS in this switch.

Firmware version:

The firmware version in this switch.

Hardware-Mechanical version:

The version of Hardware and Mechanical. The figure before the hyphen is the version of electronic hardware; the one after the hyphen is the version of mechanical.

4. Web Management in SNMP-24MGB

Serial number:

The serial number is assigned by the manufacturer.

Host IP address:

The IP address of the switch.

Host MAC address:

It is the Ethernet MAC address of the management agent in this switch.

Device Port:

Show all types and numbers of the port in the switch.

RAM size:

The size of the DRAM in this switch.

Flash size:

The size of the flash memory in this switch.

CPU Load:

To display the CPU loading percent on this switch.

4.2.2 Account Configuration

In this function, only administrator can create, modify or delete the username and password. Administrator can modify other guest identities’ password without confirming the password but it is necessary to modify the administrator-equivalent identity. Guest-equivalent identity can modify his password only. Please note that you must confirm administrator/guest identity in the field of Authorization in advance before configuring the username and password. Only one administrator is allowed to exist and unable to be deleted. In addition,

AirLive SNMP-24MGB User’s Manual

up to 4 guest accounts can be created.

The default setting for user account is:

Username: admin Password: airlive

4. Web Management in SNMP-24MGB

4.2.3 Time Configuration

The switch provides manual and automatic ways to set the system time via NTP. Manual setting is simple and you just input “Year”, “Month”, “Day”, “Hour”, “Minute” and “Second” within the valid value range indicated in each item. If you input an invalid value, for example, 61 in minute, the switch will clamp the figure to 59.

NTP is a well-known protocol used to synchronize the clock of the switch system time over a network. NTP, an internet draft standard formalized in RFC 1305, has been adopted on the system is version 3 protocol. The switch provides four built-in NTP server IP addresses resided in the Internet and a user-defined NTP server IP address. The time zone is

Greenwich-centered which uses the expression form of GMT+/- xx hours.

Function name:

Time

Function description:

Set the system time by manual input or set it by syncing from Time servers. The

function also supports daylight saving for different area’s time adjustment.

AirLive SNMP-24MGB v2 User’s Manual

4. Web Management in SNMP-24MGB

Parameter description:

Current Time:

Show the current time of the system.

Manual:

This is the function to adjust the time manually. Filling the valid figures in the fields

of Year, Month, Day, Hour, Minute and Second respectively and press <Apply>

button, time is adjusted. The valid figures for the parameter Year, Month, Day, Hour, Minute and Second are >=2000, 1-12, 1-31, 0-23, 0-59 and 0-59

respectively. Input the wrong figure and press <Apply> button, the device will

reject the time adjustment request. There is no time zone setting in Manual mode.

Default: Year = 2000; Month = 1; Day = 1; Hour = 0, Minute = 0; Second = 0

NTP:

NTP is Network Time Protocol and is used to sync the network time based Greenwich Mean Time (GMT). If use the NTP mode and select a built-in NTP time server or manually specify an user-defined NTP server as well as Time Zone, the

switch will sync the time in a short after pressing <Apply> button. Though it

synchronizes the time automatically, NTP does not update the time periodically without user’s processing.

Time Zone is an offset time off GMT. You have to select the time zone first and then perform time sync via NTP because the switch will combine this time zone offset and updated NTP time to come out the local time, otherwise, you will not able to get the correct time. The switch supports configurable time zone from –12 to +13 step 1 hour.

Default Time zone: +8 Hrs.

Daylight Saving:

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