USING THE CONSOLE CLI.........................................................................................................................................3
SWITCH PORT COMMANDS....................................................................................................................................22
PORT SECURITY COMMANDS................................................................................................................................25
DHCP SERVER COMMANDS.................................................................................................................................190
LIMITED IP MULTICAST ADDRESS.......................................................................................................................204
ACCESS CONTROL LIST (ACL) COMMANDS......................................................................................................227
TIME RANGE COMMANDS.....................................................................................................................................246
TIME AND SNTP COMMANDS...............................................................................................................................262
DNS COMMANDS....................................................................................................................................................301
IP MULTICASTING COMMANDS............................................................................................................................328
D-LINK SINGLE IP MANAGEMENT COMMANDS.................................................................................................413
COMMAND HISTORY LIST.....................................................................................................................................423
The Switch can be managed through the Switch’s serial port, Telnet, or the Web-based management agent. The Command Line
Interface (CLI) can be used to configure and manage the Switch via the serial port or Telnet interfaces.
This manual provides a reference for all of the commands contained in the CLI. Configuration and management of the Switch via the
Web-based management agent is discussed in the Manual.
Accessing the Switch via the Serial Port
The Switch’s serial port’s default settings are as follows:
• 115200 baud
• no parity
• 8 data bits
• 1 stop bit
A computer running a terminal emulation program capable of emulating a VT-100 terminal and a serial port configured as above is
then connected to the Switch’s serial port via an RS-232 DB-9 cable.
With the serial port properly connected to a management computer, the following screen should be visible. If this screen does not
appear, try pressing Ctrl+r o refresh the console screen.
Figure 1-1. Initial CLI screen
There is no initial username or password. Just press the Enter key twice to display the CLI input cursor − DGS-3627:5#. This is the
command line where all commands are input.
Setting the Switch’s IP Address
Each Switch must be assigned its own IP Address, which is used for communication with an SNMP network manager or other
TCP/IP application (for example BOOTP, TFTP). The Switch’s default IP address is 10.90.90.90. You can change the default Switch
IP address to meet the specification of your networking address scheme.
The Switch is also assigned a unique MAC address by the factory. This MAC address cannot be changed, and can be found on the
initial boot console screen – shown below.
The Switch’s MAC address can also be found in the Web management program on the Switch Information (Basic Settings) window
on the Configuration menu.
The IP address for the Switch must be set before it can be managed with the Web-based manager. The Switch IP address can be
automatically set using BOOTP or DHCP protocols, in which case the actual address assigned to the Switch must be known.
The IP address may be set using the Command Line Interface (CLI) over the console serial port as follows:
1. Starting at the command line prompt, enter the commands config ipif System ipaddress xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy.
Where the x’s represent the IP address to be assigned to the IP interface named System and the y’s represent the
corresponding subnet mask.
2. Alternatively, you can enter config ipif System ipaddress xxx.xxx.xxx.xxx /z. Where the x’s represent the IP address to be
assigned to the IP interface named System and the z represents the corresponding number of subnets in CIDR notation.
The IP interface named System on the Switch can be assigned an IP address and subnet mask which can then be used to connect a
management station to the Switch’s Telnet or Web-based management agent.
Figure 1-3. Assigning an IP Address
In the above example, the Switch was assigned an IP address of 10.24.22.200 with a subnet mask of 255.0.0.0. The system message
Success indicates that the command was executed successfully. The Switch can now be configured and managed via Telnet, SNMP
MIB browser and the CLI or via the Web-based management agent using the above IP address to connect to the Switch.
The Switch supports a console management interface that allows the user to connect to the Switch’s management agent via a serial
port and a terminal or a computer running a terminal emulation program. The console can also be used over the network using the
TCP/IP Telnet protocol. The console program can be used to configure the Switch to use SNMP-based network management software
over the network.
This chapter describes how to use the console interface to access the Switch, change its settings, and monitor its operation.
Note: Switch configuration settings are saved to non -volatile RA M using the save command. The current
configuration will then be retained in the Switch’s NV-RAM, and reloaded when the Switch is rebooted. If
the Switch is rebooted without using the save command, the last config uration saved to NV-RAM will be
loaded.
Connecting to the Switch
The console interface is used by connecting the Switch to a VT100-compatible terminal or a computer running an ordinary terminal
emulator program (e.g., the HyperTerminal program included with the Windows operating system) using an RS-232C serial cable.
Your terminal parameters will need to be set to:
• VT-100 compatible
• 115200 baud
• 8 data bits
• No parity
• One stop bit
• No flow control
Users can also access the same functions over a Telnet interface. Once an IP address has been set for the Switch, users can use a
Telnet program (in VT-100 compatible terminal mode) to access and control the Switch. All of the screens are identical, whether
accessed from the console port or from a Telnet interface.
After the Switch reboots and you have logged in, the console looks like this:
Figure 2- 1. Initial Console Screen after logging in
Commands are entered at the command prompt, DGS-3627:5#.
There are a number of helpful features included in the CLI. Entering the ? command will display a list of all of the top-level
commands.
Figure 2- 2. The ? Command
When users enter a command without its required parameters, the CLI will prompt a Next possible completions: message.
Figure 2- 3. Example Command Parameter Help
In this case, the command config account was entered with the parameter <username>. The CLI will then prompt to enter the
<username> with the message, Next possible completions:. Every command in the CLI has this feature, and complex commands
have several layers of parameter prompting.
In addition, after typing any given command plus one space, all of the next possible sub-commands can be seen, in sequential order,
by repeatedly pressing the Tab key.
To re-enter the previous command at the command prompt, press the up arrow cursor key. The previous command will appear at the
command prompt.
Figure 2- 4. Using the Up Arrow to Re-enter a Command
In the above example, the command config account was entered without the required parameter <username>, the CLI returned the
Next possible completions: <username> prompt. The up arrow cursor control key was pressed to re-enter the previous command
(config account) at the command prompt. Now the appropriate username can be entered and the config account command re-
executed.
All commands in the CLI function in this way. In addition, the syntax of the help prompts are the same as presented in this manual −
angle brackets < > indicate a numerical value or character string, braces { } indicate optional parameters or a choice of parameters,
and brackets [ ] indicate required parameters.
If a command is entered that is unrecognized by the CLI, the top-level commands will be displayed under the Available commands:
prompt.
Figure 2- 5. Available Commands
The top-level commands consist of commands such as show or config. Most of these commands require one or more parameters to
narrow the top-level command. This is equivalent to show what? or config what? Where the what? is the next parameter.
For example, if you enter the create command with no additional parameters, the CLI will then display all of the possible next
The following symbols are used to describe how command entries are made and values and arguments are specified in this manual.
The online help contained in the CLI and available through the console interface uses the same syntax.
Note: All commands are case-sensitive. Be sure to disable Caps Lock or
any other unwanted function that changes text case.
<angle brackets>
Purpose Encloses a variable or value that must be specified.
Syntax
Description In the above syntax example, users must supply an IP interface name in the
<ipif_name> space, a VLAN name in the <vlan_name 32> space, and the
network address, including the netmask, in the <network_address>
(<ip_addr/netmask>) space. Do not type the angle brackets.
Purpose Encloses an optional value or set of optional arguments.
Syntax
Description In the above syntax example, users have the option to specify config or
Example
command
reset {[config | system]}
system. It is not necessary to specify either optional value, however the effect
of the system reset is dependent on which, if any, value is specified. Therefore,
with this example there are three possible outcomes of performing a system
reset. See the following chapter, Basic Commands for more details about the
reset command.
reset config
Line Editing Key Usage
Delete Deletes the character under the cursor and then shifts the remaining characters
in the line to the left.
Backspace Deletes the character to the left of the cursor and then shifts the remaining
characters in the line to the left.
Insert or Ctrl+R Toggle on and off. When toggled on, inserts text and shifts previous text to the
right.
Left Arrow Moves the cursor to the left.
Right Arrow Moves the cursor to the right.
Up Arrow Repeats the previously entered command. Each time the up arrow is pressed,
the command previous to that displayed appears. This way it is possible to
review the command history for the current session. Use the down arrow to
progress sequentially forward through the command history list.
Down Arrow The down arrow will display the next command in the command history entered
in the current session. This displays each command sequentially as it was
entered. Use the up arrow to review previous commands.
Tab Shifts the cursor to the next field to the left.
Multiple Page Display Control Keys
Space Displays the next page.
CTRL+c Stops the display of remaining pages when multiple pages are to be displayed.
ESC Stops the display of remaining pages when multiple pages are to be displayed.
n Displays the next page.
p Displays the previous page.
q Stops the display of remaining pages when multiple pages are to be displayed.
r Refreshes the pages currently displayed.
a Displays the remaining pages without pausing between pages.
Enter Displays the next line or table entry.
The create account command is used to create user accounts that consist of a
username of 1 to 15 characters and a password of 0 to 15 characters. Up to eight
user accounts can be created.
admin <username 15> - Enter a name between 1 and 15 alphanumeric characters
to define the administrator account created here.
operator <username 15>- Enter a name between 1 and 15 alphanumeric
characters to define the operator account created here.
user <username 15>- Enter a name between 1 and 15 alphanumeric ch aracters
-- --------- ------------ ----- ----------8 03:36:27 Serial Port 5 Anonymous
Total Entries: 1
CTRL+CESCq Quit SPACEn Next Page p Previous Page r Refresh
Used to display a list of currently logged-in users.
This command displays a list of all the users that are logged-in at
the time the command is issued.
None
None.
Example usage:
To display the Switch’s information:
show switch
Purpose
Syntax show switch
Description
Parameters
Restrictions
DGS-3627:5#show switch
Command: show switch
Device Type : DGS-3627 Gigabit Ethernet Switch
MAC Address : 00-10-20-33-45-00
IP Address : 10.24.22.200 (Manual)
VLAN Name : default
Subnet Mask : 255.0.0.0
Default Gateway : 0.0.0.0
Boot PROM Version : Build 1.10-B06
Firmware Version : Build 2.40-B19
Hardware Version : 2A1G
System Name :
System Location :
System Contact :
Spanning Tree : Disabled
GVRP : Disabled
Used to display general information about the Switch.
This command displays information about the Switch.
None.
None.
802.1x : Disabled
Jumbo Frame : Off
Clipaging : Disabled
MAC Notification : Disabled
Port Mirror : Disabled
SNTP : Disabled
DHCP Relay : Disabled
DNSR Status : Disabled
VRRP : Disabled
HOL Prevention State : Disabled
Syslog Global State : Disabled
Single IP Management: Disabled
DGS-3627:5#
Example usage:
To display the serial port setting:
show serial_port
Purpose
Syntax show serial_port
Description
Parameters
Restrictions
DGS-3627:5#show serial_port
Command: show serial_port
Baud Rate : 115200
Data Bits : 8
Parity Bits : None
Stop Bits : 1
Auto-Logout : 10 mins
DGS-3627:5#
Used to display the current serial port settings.
This command displays the current serial port settings.
None.
None
Used to pause the scrolling of the console screen when the show
command displays more than one page.
This command is used when issuing the show command which
causes the console screen to rapidly scroll through several pages.
This command will cause the console to pause at the end of each
page. The default setting is enabled.
None.
Only administrator-level and operator-level users can issue this
command.
disable clipaging
Purpose
Used to disable the pausing of the console screen scrolling at the
This command is used to disable the pausing of the console screen
at the end of each page when the show command would display
more than one screen of information.
None.
Only administrator-level and operator-level users can issue this
command.
enable telnet
Purpose
Syntax enable telnet {<tcp_port_number 1-65535>}
Used to enable communication with and management of the Switch
using the Telnet protocol.
This command is used to enable the Telnet protocol on the Switch.
The user can specify the TCP or UDP port number the Switch will
use to listen for Telnet requests.
{<tcp_port_number 1-65535>}− The TCP port number. TCP ports
are numbered between 1 and 65535. The “well-known” TCP port for
the Telnet protocol is 23.
Only administrator-level and operator-level users can issue this
command.
Used to disable the Telnet protocol on the Switch.
Syntax disable telnet
Description
Parameters
This command is used to disable the Telnet protocol on the Switch.
None.
Only administrator-level and operator-level users can issue this
command.
enable web
Purpose
Syntax enable web {<tcp_port_number 1-65535>}
Description
Parameters
Used to enable the HTTP-based management software on the Switch.
This command is used to enable the Web-based management software
on the Switch. The user can specify the TCP port number the Switch
will use to listen for Telnet requests.
{<tcp_port_number 1-65535>}− The TCP port number. TCP ports are
numbered between 1 and 65535. The “well-known” port for the Webbased management software is 80.
Example usage:
To enable HTTP and configure port number:
Restrictions
DGS-3627:5#enable web 80
Command: enable web 80
Note: SSL will be disabled if web is enabled.
Success.
DGS-3627:5#
Only administrator-level and operator-level users can issue this
command.
disable web
Purpose
Syntax disable web
Description
Parameters
Used to disable the HTTP-based management software on the Switch.
This command disables the Web-based management software on the
Switch.
None.
Example usage:
To disable HTTP:
Restrictions
DGS-3627:5#disable web
Command: disable web
Only administrator-level and operator-level users can issue this
Used to save changes in the Switch’s configuration to non-volatile RAM.
This command is used to enter the current switch configuration or log
file into non-volatile RAM. The saved switch configuration will be loaded
into the Switch’s memory each time the Switch is restarted.
config <drive_id> – Specify to save current settings to the Flash
memory of the switch.
<drive_id> - Specify the ID of the drive where the log or configuration
file will be placed.
<pathname 64> - Enter a name of up to 64 characters to define the file
to be saved on the flash drive.
log – Specify to save current Switch log to NV-RAM.
all – Use to save the configuration and log file to NV-RAM.
Only administrator-level and operator-level users can issue this
command.
To restore all of the Switch’s parameters to its default values:
Used to reset the Switch to the factory default settings.
This command is used to restore the Switch’s configuration to the default
settings assigned from the factory.
config− If the keyword ‘config’ is specified, all of the factory default
settings are restored on the Switch including the IP address, user
accounts, and the switch history log. The Switch will not save or reboot.
system− If the keyword ‘system’ is specified all of the factory default
settings are restored on the Switch. The Switch will save and reboot after
the settings are changed to default. Rebooting will clear all entries in the
Forwarding Data Base.
If no parameter is specified, the Switch’s current IP address, user
accounts, and the switch history log are not changed. All other parameters
are restored to the factory default settings. The Switch will not save or
reboot.
Only administrator-level users can issue this command.
DGS-3627:5#reset config
Command: reset config
Are you sure to proceed with system reset?(y/n) y
Success.
DGS-3627:5#
Example usage:
To initiate the login procedure:
login
Purpose
Syntax login
Description
Parameters
Restrictions
DGS-3627:5#login
Command: login
UserName:
Used to log in a user to the Switch’s console.
This command is used to initiate the login procedure. The user will be
prompted for a Username and Password.
To show the current hardware status of the Switch:
Description
Parameters
Restrictions
DGS-3627:5#logout
This command terminates the current user’s session on the Switch’s
console.
None.
None.
show device_status
Purpose Used to display the current status of the hardware of the Switch.
Syntax
Description This command displays the current status of the Switch’s physical
Parameters None.
Restrictions None.
show device_status
elements.
DGS-3627:5#show device_status
Command: show device_status
Internal Power External power Side Fan Back Fan
---------------------- ------------------------ ---------------- -- ---------------
Active Fail OK ---
DGS-3627:5#
config command_prompt
Purpose Used to configure the command prompt for the Command Line
Interface.
Syntax
Description This command is used to configure the command prompt for the CLI
Parameters <string 16> - Enter an alphanumeric string of no more than 16
Firmware: Build 2.40-B19
Copyright(C) 2008 D-Link Corporation. All rights reserved.
===============================================================================
<Function Key> <Control Key>
Ctrl+C Quit without save left/right/
Ctrl+W Save and quit up/down Move cursor
Ctrl+D Delete line
Ctrl+X Erase all setting
Ctrl+L Reload original setting
This command allows for the configuration of the Switch’s Ethernet ports. Only the ports
listed in the <portlist> will be affected.
all − Configure all ports on the Switch.
<portlist> − Specifies a port or range of ports to be configured. The beginning and end of
the port list range are separated by a dash.
medium_type [fiber | copper] – This applies only to the Combo ports. If configuring the
Combo ports this defines the type of transport medium used.
speed – Allows the user to adjust the speed for a port or range of ports. The user has a
choice of the following:
• auto − Enables auto-negotiation for the specified range of ports.
• [10 | 100 | 1000] − Configures the speed in Mbps for the specified range of
ports. Gigabit ports are statically set to 1000 and cannot be set to slower
speeds.
•[half | full]− Configures the specified range of ports as either full-duplex or halfduplex.
•[master | slave] - The master setting (1000M/Full_M) will allow the port to
advertise capabilities related to duplex, speed and physical layer type. The
master setting will also determine the master and slave relationship between
the two connected physical layers. This relationship is necessary for
establishing the timing control between the two physical layers. The timing
control is set on a master physical layer by a local source. The slave setting
(1000M/Full_S) uses loop timing, where the timing comes form a data stream
received from the master. If one connection is set for 1000M/Full_M, the other
side of the connection must be set for 1000M/Full_S. Any other configuration
will result in a link down status for both ports.
flow_control [enable | disable] – Enable or disable flow control for the specified ports.
learning [enable | disable] − Enables or disables the MAC address learning on the
specified range of ports.
state [enable | disable] − Enables or disables the specified range of ports.
description <desc 1-32> - Enter an alphanumeric string of no more than 32 characters to
describe a selected port interface.
clear_description - Enter this command to clear the port description of the sele cted
To configure the speed of ports 1 to 3 to be 10 Mbps, full duplex, with learning and state enabled:
show ports
Purpose
Syntax show ports {<portlist>} {[description} | err_disabled]}
Description
Parameters
Only administrator-level and operator-level users can issue this command.
DGS-3627:5#config ports 1-3 speed 10_full learning enable state enable
Command: config ports 1-3 speed 10_full learning enable state enable
Success.
DGS-3627:5#
Used to display the current configuration of a range of ports.
This command is used to display the current configuration of a range of ports.
<portlist> − Specifies a port or range of ports to be displayed. The beginning
and end of the port list range are separated by a dash.
{description} – Adding this parameter to the show ports command indicates
that a previously entered port description will be included in the display.
err_disabled – Choosing this parameter will display ports that have been
disconnected due to an error on the port, such as a Loopback Detection.
Restrictions
Example usage:
To display the configuration of all ports on a standalone switch:
None.
DGS-3627:5#show ports
Command: show ports
Port Port Settings Connection Address
State Speed/Duplex/FlowCtrl Speed/Duplex/FlowCtrl Learning
------ ------------- --------------- ------------------- ------------------------------ --- ---------------1 Enabled Auto/Enabled Link Down Enabled
2 Enabled Auto/Enabled Link Down Enabled
3 Enabled Auto/Enabled Link Down Enabled
4 Enabled Auto/Enabled Link Down Enabled
5 Enabled Auto/Enabled Link Down Enabled
6 Enabled Auto/Enabled Link Down Enabled
7 Enabled Auto/Enabled Link Down Enabled
8 Enabled Auto/Enabled Link Down Enabled
9 Enabled Auto/Enabled Link Down Enabled
10 Enabled Auto/Enabled Link Down Enabled
11 Enabled Auto/Enabled 100M/Full/None Enabled
12 Enabled Auto/Enabled Link Down Enabled
13 Enabled Auto/Enabled Link Down Enabled
14 Enabled Auto/Enabled Link Down Enabled
15 Enabled Auto/Enabled Link Down Enabled
16 Enabled Auto/Enabled Link Down Enabled
17 Enabled Auto/Enabled Link Down Enabled
18 Enabled Auto/Enabled Link Down Enabled
19 Enabled Auto/Enabled Link Down Enabled
CTRL+CESCq Quit SPACEn Next Page p Previous Page r Refresh
23
Example usage:
To display the configuration of all ports on the Switch, with description:
DGS-3627:5#show ports description
Command: show ports description
Port Port Settings Connection Address
State Speed/Duplex/FlowCtrl Speed/Duplex/FlowCtrl Learning
------ -------- ------------------------------- -------------------------------- ------------ --1 Enabled Auto/Disabled Link Down Enabled
Description: dads1
2 Enabled Auto/Disabled Link Down Enabled
Description:
3 Enabled Auto/Disabled Link Down Enabled
Description:
4 Enabled Auto/Disabled Link Down Enabled
Description:
5 Enabled Auto/Disabled Link Down Enabled
Description:
6 Enabled Auto/Disabled Link Down Enabled
Description:
7 Enabled Auto/Disabled Link Down Enabled
Description:
8 Enabled Auto/Disabled Link Down Enabled
Description:
CTRL+CESCq Quit SPACEn Next Page p Previous Page r Refresh
To display the Error Disabled ports:
DGS-3627:5#show ports err_disabled
Command : show ports err_disabled
Port Port Connection status Reason
State
------- ------- -------------------------- -----------2 Enabled Err-disabled Storm control
Desc: Port 2
8 Enabled Err-disabled Storm control
Desc: Port 8
Syntax delete port_security_entry vlan_name <vlan_name 32> port
Description
Parameters
Restrictions
Example usage:
To delete a port security entry:
DGS-3627:5#delete port_security_entry vlan_name default port 6
mac_address 00-01-30-10-2C-C7
Command: delete port_security_entry vlan_name default port 6
mac_address 00-01-30-10-2C-C7
Success.
DGS-3627:5#
Used to delete a port security entry by MAC address, port number
and VLAN ID.
<port> mac_address <macaddr>
This command is used to delete a single, previously learned port
security entry by port, VLAN name, and MAC address.
vlan name <vlan_name 32> - Enter the corresponding vlan name of
the port to delete.
mac_address <macaddr> - Enter the corresponding MAC address,
previously learned by the port, which the user wishes to delete.
port <port> - Enter the port number which has learned the
previously entered MAC address.
Only administrator-level and operator-level users can issue this
command.
Example usage:
clear port_security_entry
Purpose
Syntax clear port_security_entr y port <portlist>
Description
Parameters
Restrictions
Used to clear MAC address entries learned from a specified port for
the port security function.
This command is used to clear MAC address entries which were
learned by the Switch by a specified port. This command only relates
to the port security function.
<portlist> − Specifies a port or port range to clear. The beginning
and end of the port list range are separated by a dash.
Only administrator-level and operator-level users can issue this
command.
Used to display the current port security configuration.
This command is used to display port security information of the
Switch’s ports. The information displayed includes port security,
admin state, maximum number of learning address and lock mode.
<portlist>− Specifies a port or range of ports to be viewed. The
beginning and end of the port list range are separated by a dash.
None.
27
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