Black Box LGB5128A User manual

BLACK BOX®
Provides (20) Gigabit Ethernet SFP, (4) Gigabit
Ethernet Combo RJ-45/SFP, and (4) 1G/10G SFP+
connections.
This manual contains information for firmware version 1.59.
SFP Managed Switch Eco User’s Manual
LGB5128A
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [e-mail]
Customer
Support
Information

ii
LGB5128A
User's Manual
SFP Managed Switch Eco
Firmware version 1.59
*Supports LFP416 with auto mode of link speed on Ports 1–20 and does not support LFP415.
Compatible Black Box SFPs.
Part Number
Product Name
LFP401–LFP404
155-Mbps Extended Diagnostic SFP
LFP411–LFP414, LFP416*
1250-Mbps Extended Diagnostic SFP
LSP421–LSP422
10GBASE-SR SFP, 10GBASE-LR SFP

iii
About This Manual
Purpose This manual gives specific information on how to operate and use the
management functions of the LGB5128A.
Audience The manual is intended for use by network administrators who are
responsible for operating and maintaining network equipment;
consequently, it assumes a basic working knowledge of general
switch functions, the Internet Protocol (IP), and Simple Network
Management Protocol (SNMP).
Disclaimer Black Box Network Services shall not be liable for damages of any kind,
including, but not limited to, punitive, consequential or cost of cover
damages, resulting from any errors in the production information or
specifications set forth in this document and Black Box Network Services
may revise this document at any time without notice.
FCC Warning This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is 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.
FCC Caution To assure continued compliance (example: use only shielded
interface cables when connection to computer or peripheral
devices). Any changes or modifications not expressly approved by
the party responsible for compliance could void the user’s
authority to operate the equipment. This device complies with Part
15 of the FCC Rules. Operation is subject to the Following two
conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any interference received,
including interference that may cause undesired operation.
CE mark
Warning
This is a Class B device, In a domestic environment, this product
may cause radio interference, in which case the user may be
required to take adequate measures.
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.

LGB5128A User Manual
iv
CAUTION: Alerts you to a potential hazard that could cause
loss of data, or damage the system or equipment.

v
Table of Contents
INTRODUCTION................................................................................................................................................... 1
CHAPTER 1 OPERATION OF WEB-BASED MANAGEMENT.............................................................. 2
CHAPTER 2 SYSTEM CONFIGURATION ............................................................................................. 4
2-1 SYSTEM INFORMATION ................................................................................................................................. 4
2-1.1 Information........................................................................................................................................... 4
2-1.2 Configuratio ......................................................................................................................................... 6
2-2 TIME.............................................................................................................................................................. 7
2-2.1 Manual.................................................................................................................................................. 7
2-2.2 NTP....................................................................................................................................................... 9
2-3 ACCOUNT .................................................................................................................................................... 10
2-3.1 Users................................................................................................................................................... 10
2-3.2 Privilege Level.................................................................................................................................... 11
2-4 IP ................................................................................................................................................................ 13
2-4.1 IPV4.................................................................................................................................................... 13
2-4.2 IPV6.................................................................................................................................................... 15
2-5 SYSLOG ....................................................................................................................................................... 16
2-5.1 Configuration .................................................................................................................................... 16
2-5.2 Log..................................................................................................................................................... 17
2-5.3 Detailed Log ...................................................................................................................................... 18
2-6 SNMP ......................................................................................................................................................... 19
2-6.1 System................................................................................................................................................ 19
2-6.2 Communities....................................................................................................................................... 20
2-6.3 Users................................................................................................................................................... 21
2-6.4 Groups ................................................................................................................................................ 23
2-6.5 Views .................................................................................................................................................. 24
2-6.6 Access ................................................................................................................................................. 25
2-6.7 Trap .................................................................................................................................................... 26
CHAPTER 3. CONFIGURATION............................................................................................................ 29
3-1 PORT ........................................................................................................................................................... 29
3-1.1 Configuration ..................................................................................................................................... 29
3-1.2 Port Description ................................................................................................................................. 31
3-1.3 Traffic Overview................................................................................................................................. 32
3-1.4 Detailed Statistics............................................................................................................................... 33
3-1.5 Qos Statistics ...................................................................................................................................... 35
3-1.6 SFP Information ................................................................................................................................. 36
3-1.7 EEE..................................................................................................................................................... 37
3-2 ACL ............................................................................................................................................................ 38
3-2.1 Ports ................................................................................................................................................... 39
3-2.2 Rate Limiters ...................................................................................................................................... 40
3-2.3 Access Control List............................................................................................................................. 41
3-2.4 ACL Status.......................................................................................................................................... 44
3-3 AGGREGATION ............................................................................................................................................ 45
3-3.1 Static Trunk ........................................................................................................................................ 45
3-3.1.1 Static Trunk ...................................................................................................................................................45
3-3.2 LACP .................................................................................................................................................. 47
3-3.2.1 Configuration.................................................................................................................................................47
3-3.2.2 System Status................................................................................................................................................. 49
3-3.2.3 Port Status......................................................................................................................................................50
3-3.2.4 Port Statistics .................................................................................................................................................51
3-4 SPANNING TREE .......................................................................................................................................... 52
3-4.1 Bridge Settings ................................................................................................................................... 52
2-4.2 MSTI Mapping.................................................................................................................................... 54
3-4.3 MSTI Priorities................................................................................................................................... 55
3-4.4 CIST Ports .......................................................................................................................................... 56
3-4.5 MSTI Ports ......................................................................................................................................... 58
3-4.6 Bridge Status ...................................................................................................................................... 60
3-4.7 Port Status .......................................................................................................................................... 61
3-4.8 Port Statistics ..................................................................................................................................... 62
3-5 MRSTP....................................................................................................................................................... 62

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3-5.1 Instance .............................................................................................................................................. 63
3-5.2 Port Configuration ............................................................................................................................. 65
3-5.3 Port Status .......................................................................................................................................... 67
3-6 IGMP SNOOPING......................................................................................................................................... 68
3-6.1 Basic Configuration ........................................................................................................................... 68
3-5.2 VLAN Configuration........................................................................................................................... 70
3-5.3 Port Group Filtering .......................................................................................................................... 71
3-5.4 Status .................................................................................................................................................. 73
3-5.5 Group Information ............................................................................................................................. 74
3-5.6 IPv4 SSM information ........................................................................................................................ 75
3-6 MLD SNOOPING.......................................................................................................................................... 76
3-6.1 Basic Configuration ........................................................................................................................... 77
3-6.2 VLAN Configuration........................................................................................................................... 78
3-6.3 Port Group Filtering .......................................................................................................................... 79
3-6.4 Status .................................................................................................................................................. 80
3-6.5 Group Information ............................................................................................................................. 81
3-6.6 IPv6 SSM Information ........................................................................................................................ 83
3-7 MVR........................................................................................................................................................... 84
3-7.1 Configuration ..................................................................................................................................... 84
3-7.2 Groups Information............................................................................................................................ 85
3-7.3 Statistics.............................................................................................................................................. 86
3-8 LLDP .......................................................................................................................................................... 87
3-8.1 LLDP Configuration........................................................................................................................... 87
3-8.2 LLDP Neighbours............................................................................................................................... 89
3-8.3 LLDP-MED Configuration................................................................................................................. 91
3-8.4 LLDP-MED Neighbors....................................................................................................................... 96
3-8.5 EEE..................................................................................................................................................... 99
3-8.6 Port Statistics ................................................................................................................................... 101
3- 9FILTERING DATA BASE ............................................................................................................................ 103
3- 9.1 Configuration .................................................................................................................................. 103
3- 9.2 Dynamic MAC Table ....................................................................................................................... 105
3-10 VLAN..................................................................................................................................................... 106
3-10.1 VLAN Membership ......................................................................................................................... 106
3-10.2 Ports ............................................................................................................................................... 107
3-10.3 Switch Status................................................................................................................................... 109
3-10.4 Port Status ...................................................................................................................................... 110
3-10.5 Private VLANs................................................................................................................................ 111
3-10.5.1 Private VLANs Membership.................................................................................................................111
3-10.5.2 Port Isolation ..........................................................................................................................................112
3-10.6 MAC-based VLAN .......................................................................................................................... 113
3-10.6.1 Configuration..........................................................................................................................................113
3-10.6.2 Status ......................................................................................................................................................115
3-10.7 PROTOCOL -BASED VLAN ................................................................................................................... 116
3-10.7.1 Protocol to Group ..................................................................................................................................116
3-10.7.2 Group to VLAN....................................................................................................................................... 118
3-12 GARP ..................................................................................................................................................... 119
3-12.1 Configuration ................................................................................................................................. 119
3-12.2 Statistics.......................................................................................................................................... 121
3-13 GVRP ..................................................................................................................................................... 122
3-13.1 Configuration ................................................................................................................................. 122
3-13.2 Statistics.......................................................................................................................................... 124
3-14 MRP........................................................................................................................................................ 125
3-14.1 Configuration ................................................................................................................................. 125
3-14.2 Statistics.......................................................................................................................................... 127
3-15 MVRP..................................................................................................................................................... 128
3-15.1 Configuration ................................................................................................................................. 128
3-15.2 Statistics.......................................................................................................................................... 130
3-16 QOS......................................................................................................................................................... 131
3-16.1 Port Classification.......................................................................................................................... 131
3-16.2 Port Policing .................................................................................................................................. 133
3-16.3 Port Scheduler................................................................................................................................ 134
3-16.4 Port Shaping................................................................................................................................... 136
3-16.5 Port Tag Remarking ....................................................................................................................... 139
3-16.6 Port DSCP...................................................................................................................................... 140
3-16.7 DSCP-Based QoS ........................................................................................................................... 141
3-16.8 DSCP Translation .......................................................................................................................... 143

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3-16.9 DSCP Classification....................................................................................................................... 145
3-16.10 QoS Control List Configuration ................................................................................................... 146
3-16.11 QCL Status ................................................................................................................................... 149
3-16.12 Storm Control ............................................................................................................................... 150
3-18 S-FLOW AGENT ...................................................................................................................................... 151
3-18.1 Collector......................................................................................................................................... 151
3-18.2 Sampler........................................................................................................................................... 153
3-19 MIRRORING ............................................................................................................................................. 154
3-20 TRAP EVENT SEVERITY ........................................................................................................................... 156
3-21 SMTP CONFIGURATION .......................................................................................................................... 157
3-22 802.3AH OAM ........................................................................................................................................ 158
3-22.1 Port Config ..................................................................................................................................... 158
3-22.2 Event Config ................................................................................................................................... 160
3-22.3 Port Status ...................................................................................................................................... 162
3-22.4 Link Events ..................................................................................................................................... 164
3-22.5 Statistics.......................................................................................................................................... 167
3-23 ETHERNET OAM..................................................................................................................................... 169
3-23 EPS ......................................................................................................................................................... 171
3-23 ERPS ...................................................................................................................................................... 173
3-22 PTP ......................................................................................................................................................... 175
3-22.1 Configuration ................................................................................................................................. 175
3-22.2 Status .............................................................................................................................................. 178
CHAPTER 4. SECURITY ................................................................................................................ 180
4-1 IP SOURCE GUARD.................................................................................................................................... 180
4-1.1 Configuration ................................................................................................................................... 180
4-1.2 Static Table....................................................................................................................................... 182
4-1.3 Dynamic Table ................................................................................................................................. 183
4-2 ARP INSPRCTION ...................................................................................................................................... 184
4-2.1 Configuration ................................................................................................................................... 184
4-2.2 Static Table....................................................................................................................................... 185
4-2.3 Dynamic Table ................................................................................................................................. 186
4-3 DHCP SNOOPING ...................................................................................................................................... 187
4-3.1 Configuration ................................................................................................................................... 187
4-3.2 Statistics............................................................................................................................................ 188
4-4 DHCP RELAY ........................................................................................................................................... 190
4-4.1 Configuration ................................................................................................................................... 190
4-4.2 Statistics............................................................................................................................................ 192
4-5 NAS .......................................................................................................................................................... 194
4-5.1 Configuration ................................................................................................................................... 194
4-5.2 Switch Status..................................................................................................................................... 201
4-5.3 Port Status ........................................................................................................................................ 203
4-6 AAA ......................................................................................................................................................... 206
4-6.1 Configuration ................................................................................................................................... 206
4-6.2 Radius Overview............................................................................................................................... 209
4-6.3 Radius Details .................................................................................................................................. 210
4-7 PORT SECURITY ........................................................................................................................................ 211
4-7.1 Limit Control .................................................................................................................................... 211
4-7.2 Switch Status..................................................................................................................................... 214
4-7.3 Port Status ........................................................................................................................................ 216
4-8 ACCESS MANAGEMENT............................................................................................................................. 217
4-8.1 Configuration ................................................................................................................................... 217
4-8.2 Statistics............................................................................................................................................ 219
4-9 SSH........................................................................................................................................................... 220
4-10 HTTPS.................................................................................................................................................... 221
4-11 AUTH METHOD ....................................................................................................................................... 222
CHAPTER 5. MAINTENANCE ..................................................................................................... 223
5-1 RESTART DEVICE ...................................................................................................................................... 223
5-2 FIRMWARE ................................................................................................................................................ 224
5-2.1 Firmware Upgrade........................................................................................................................... 224
5-2.2 Firmware Selection .......................................................................................................................... 225
5-3 SAVE /RESTORE........................................................................................................................................ 227
5-3.1 Factory Defaults............................................................................................................................... 227
5-3.2 Save Start.......................................................................................................................................... 227

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5-3.3 Save User.......................................................................................................................................... 228
5-3.4 Restore User ..................................................................................................................................... 228
5-4 EXPORT /IMPORT ...................................................................................................................................... 229
5-4.1 Export Config ................................................................................................................................... 229
5-4.2 Import Config ................................................................................................................................... 230
5-5 DIAGMOSTICS............................................................................................................................................ 231
5-5.1 Ping .................................................................................................................................................. 231
5-5.2 Ping6 ................................................................................................................................................ 232
5-5.3 VeriPHY............................................................................................................................................ 233
A. GLOSSARY OF WEB-BASED MANAGEMENT ................................................................................... 234
A ..................................................................................................................................................................... 234
C ..................................................................................................................................................................... 235
D ..................................................................................................................................................................... 235
E...................................................................................................................................................................... 236
F...................................................................................................................................................................... 237
H ..................................................................................................................................................................... 237
I....................................................................................................................................................................... 238
L...................................................................................................................................................................... 239
M..................................................................................................................................................................... 240
N ..................................................................................................................................................................... 240
O ..................................................................................................................................................................... 241
P...................................................................................................................................................................... 241
Q ..................................................................................................................................................................... 242
R ..................................................................................................................................................................... 243
S...................................................................................................................................................................... 243
T...................................................................................................................................................................... 245
U ..................................................................................................................................................................... 246
V ..................................................................................................................................................................... 246

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LGB5128A User Manual
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INTRODUCTION
Overview
This user’s manual explains how to install and connect your network system to
configure and monitor the LGB5128A through its built-in CLI and Web via the RS-232
serial interface and Ethernet ports. Examples of hardware and software functions are
shown as well as the examples of the operation for Web-based interface and command-
line interface (CLI).
The LGB5128A L2+ managed switch from Black Box, provides a reliable
infrastructure for your business network. The switch’s intelligent features help improve
the availability of your critical business applications, protect your sensitive information,
and optimize your network bandwidth to deliver information and applications more
effectively. It’s ideal for entry-level networking.
LGB5128A L2+ Managed Switch has 20 ports (100/1G) SFP + 4-P Combo Gigabit
TP/(100/1G)SFP and 4-P (1G/10G) SFP+ in a single device.
L2+ features improve management, security, QoS, and performance.
High port count design with all Gigabit Ethernet ports.
Supports guest VLAN, voice VLAN, Port-based, tag-based and Protocol-based
VLANs.
Meets 802.3az Energy Efficient Ethernet standard.
Features 32K MAC table.
Conforms to IPv6/IPv4 Dual stack.
Supports s-Flow.
Ports are easy to configure to implement the IP Phone, IP Camera, or
Wireless environment.
Overview of this user’s manual
Chapter 1: Operation of Web-based Management.
Chapter 2: System Configuration.
Chapter 3: Configuration
Chapter 4: Security
Chapter 5: Maintenance
Appendix: Glossary of Web-Based Management

LGB5128A User Manual
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Chapter 1 Operation of Web-based Management
Initial
Configuration
This chapter instructs you how to configure and manage the LGB5128A
through the Web user interface. With this facility, you can easily access
and monitor status of all switches through any one port of the switch,
including MIBs status, each port activity, Spanning tree status, port
aggregation status, multicast traffic, VLAN and priority status, illegal
access record, and so on.
The default values of the LGB5128A are listed in the table below:
IP Address
192.168.1.1
Subnet Mask
255.255.255.0
Default Gateway
192.168.1.254
Username
admin
Password
After the LGB5128A has finished configuring the IT interface, you can
browse it. For instance, if you type http://192.168.1.1 in the address
row in a browser, it will show the following screen and ask you to input a
username and password to login and access authentication.
The default username is “admin” and the default password is empty.
The first time you access the switch, enter the default username and
password, and then click the <Login> button. The login process now is
completed. In this login menu, you have to input the complete username
and password respectively; the LGB5128A will not give you a shortcut to
username automatically. This looks inconvenient, but is safer.
The LGB5128A supports a simple user management function allowing only
one administrator to configure the system at a time. If there are two or
more users using administrator’s identity, it will allow the only the user
who logs in first to configure the system. The rest of users, even with
administrator’s identity, can only monitor the system. Users who have no
administrator’s identity can only monitor the system. A maximum of three
users can login simultaneously to the LGB5128A.
NOTE:
When you login the Switch WEB/CLI to manager, you must first
type the Username of the admin. The password is blank, after
you type in the end Username, press enter. When the
management page appears, you can enter WEB/CLI.
When you login LGB5128A series switch Web UI management, you
can use both ipv4 ipv6 login to manage the switch.
To optimize the display effect, we recommend you use Microsoft
IE 6.0 or above, Netscape V7.1 or above, or FireFox V1.00 or
above and select the resolution as 1024 x 768. The switch
supports a neutral Web browser interface.

3
NOTE:
DHCP is enabled on the LGB5128A, but if you do not have a DHCP
server to provide IP addresses to the switch, use the switch
default ip 192.168.1.1
Figure 1 The login page

LGB5128A User Manual
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Chapter 2 System Configuration
This chapter describes all of the basic configuration tasks, including the switch’s system
information and management (for example, Time, Account, IP, Syslog, and SNMP.)
2-1 System Information
After you login, the switch shows you the system information. This is the default page. It tells
you the basic information of the system, including Model Name, System Description, Contact,
Device Name, System Up Time, BIOS Version, Firmware Version, Hardware-Mechanical
Version, Serial Number, Host IP Address, Host Mac Address, Device Port, RAM Size, and
Flash Size. If the switch malfunctions, you will need to know the software version used, MAC
address, serial number, active ports, and so on.
2-1.1 Information
The switch system information is provided here.
Web interface
To configure System Information in the Web interface:
1. Click SYSTEM, System, and Information.
2. Specify the contact information for the system administrator, as well as the name and
location of the switch. Also indicate the local time zone by configuring the appropriate
offset.
3. Click Refresh.
Figure 2-1.1: System Information

5
Parameter description:
Model name:
The model name of this device.
System description:
8-port 10/100/1000BASE-T + 2-Port TP/(100/1G) SFP Combo L2 Plus
Managed Switch.
Location:
Where this switch is located. User-defined.
Contact:
Write down the contact person and phone here for help managing and
maintaining the switch. You can configure this parameter through the device’s
user interface or SNMP.
Device name:
The name of the switch. User-defined.
System Date:
Shows the system time of the switch. The format is: day of week, month, day,
hours : minutes : seconds, year.
System up time:
The time accumulated since this switch is powered up. The format is day, hour, minute,
second.
BIOS version:
The version of the BIOS in this switch.
Firmware version:
The firmware version in this switch.
Firmware-Hardware version:
The version of hardware and mechanical. The figure before the hyphen is the version of
electronic firmware; the figure after the hyphen is the version of hardware.
Serial number:
The serial number is assigned by Black Box.
Host IP address:
The IP address of the switch.
Host MAC address:
The Ethernet MAC address of the management agent in this switch.
Device Port:
Shows all types and numbers of ports in the switch.
RAM size:
The size of the RAM in this switch.
Flash size:
The size of the flash memory in this switch.
Bridge FDB size :
Displays the bridge FDB size information.
Transmit Queue :
Displays the device’s transmit hardware priority queue information.
Maximum Frame size :
Displays the device’s maximum frame size.

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2-1.2 Configuration
You can identify the system by configuring the contact information, name, and location of the
switch.
Web interface
To configure System Information in the Web interface:
1. Click System, System Information, Configuration.
2. Write System Contact , System Name, System Location information in this page.
3. Click Save.
Figure 2-1.2: System Information configuration
Parameter description:
System Contact :
The name/job function of the contact person for this managed node, together
with information on how to contact this person. The allowed string length is 0
to 255, and the allowed content is the ASCII characters from 32 to 126.
System Name :
The administrator assigns the name for this managed node. By convention, this
is the node's fully qualified domain name. A domain name is a text string
drawn from the alphabet (A-Za-z), digits (0-9), minus sign (-). No space
characters are permitted as part of a name. The first character must be an
alpha character. The first or last character must not be a minus sign. The
allowed string length is 0 to 255.
System Location :
The physical location of this node (e.g., telephone closet, 3rd floor). The
allowed string length is 0 to 255, and the allowed content is the ASCII
characters from 32 to 126.

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2-2 Time
This page configures the switch time. Time configuration includes Time Configuration and
NTP Configuration.
2-2.1 Manual
The switch provides manual and automatic ways to set the system time via NTP. Manual
setting is simple—just input Year, Month, Day, Hour, Minute, and Second within the valid
value range indicated in each item.
Web Interface
To configure Time in the Web interface:
1. Click Time , Manual.
2. Specify the Time parameter in manual parameters.
3. Click Save.
Figure 2-2.1: The time configuration
Parameter description:
Clock Source:
Select the clock source for the LGB5128A. You can choose “Use local Settings”
or “Use NTP Server” for the LGB5128A time clock source.
Local Time:
Shows the current time of the system.
Time Zone Offset:
Provides the timezone offset relative to UTC/GMT. The offset is given in
minutes east of GMT. The valid range is from -720 to +720 minutes.
Daylight Saving:
Daylight saving is used in some countries. If set, it will adjust the time lag or
advance in unit of hours, according to the starting date and the ending date.
For example, you can set the daylight saving to be 1 hour. When the time
passes over the starting time, the system time will be increased one hour after
one minute at the time since it passed over. When the time passes over the
ending time, the system time will be decreased one hour after one minute at
the time since it passed over.
The switch supports valid configurable daylight saving times between –5 and
+5 steps for one hour. If this parameter is zero, the switch enacts daylight
saving time. You don’t have to set the starting/ending date as well. If you set
daylight saving to be non-zero, you have to set the starting/ending date as well;
otherwise, the daylight saving function will not be activated.

LGB5128A User Manual
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Time Set Offset:
Provides the Daylight saving time set offset. The offset is given in minutes east
of GMT. The valid range is from 1 to 1440 minutes. default is 60 minutes.
Daylight Savings Type:
Provide the Daylight savings type selection. You can select “By Dates” or
“Recurring” for Daylight saving type.
From:
To configure Daylight saving start date and time, use the format “YYYY-MM-DD
HH:MM.”
To:
To configure Daylight saving end date and time, use the format “YYYY-MM-DD
HH:MM.”
NOTE:The “from” and “to” fields display the values you set.

LGB5128A User Manual
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2-2.2 NTP
NTP is Network Time Protocol and is used to sync the network time based on Greenwich
Mean Time (GMT). If you 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 shortly 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 result in 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.
Web Interface
To configure Time in the Web interface:
1. Click SYSTEM, NTP.
2. Type in the Time parameter.
3. Click Save.
Figure 2-2.2: The NTP configuration
Parameter description:
Server 1 to 5 :
Provide the NTP IPv4 or IPv6 address of this switch. The IPv6 address is a
128-bit value composed of eight fields of up to four hexadecimal digits with a
colon separating each field (:). For example, ‘fe80::215:c5ff:fe03:4dc7'. The
symbol '::' is a special syntax used as a shorthand way of representing multiple
16-bit groups of contiguous zeros; but it can only appear once. It can also
represent a legally valid IPv4 address.For example, '::192.1.2.34'.
Buttons
These buttons are displayed on the NTP page:
Save—Click to save changes.
Reset—Click to undo any changes made locally and revert to previously saved
values.

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2-3 Account
In this function, only the administrator can create, modify, or delete the username and
password. The administrator can modify other guest identities’ passwords without confirming
the password but will also need to modify the administrator-equivalent identity. Guest-
equivalent identity can modify his password only.
NOTE: You must confirm administrator/guest identity in the Authorization field before
configuring the username and password. Only one administrator is allowed to exist and
cannot be deleted. In addition, up to 4 guest accounts can be created.
2-3.1 Users
This page provides an overview of the current users. To login as another user on the Web
server, close and reopen the browser
Web Interface
To configure Account in the Web interface:
1. Click SYSTEM, Account, Users.
2. Click Add new user.
3. Specify the User Name parameter.
4. Click Save.
Figure2- 3.1: The Users Account configuration
Parameter description:
User Name :
The name identifying the user. This is also a link to Add/Edit User.
Password
Type in the password. The allowed string length is 0 to 255, and the allowed
content includes ASCII characters from 32 to 126.
Password (again)
Type the password again. You must type the same password again in the field.