D-Link xStack DES-3526 User manual

©Copyright 2005. All Rights Reserved
CLI Manual
Product Model : xStackTM DES-3526/DES-3526DC
Layer 2 Managed Stackable Fast Ethernet Switch
Release 3.60

Table of Contents
INTRODUCTION .........................................................................................................................1
USING THE CONSOLE CLI ........................................................................................................4
COMMAND SYNTAX ..................................................................................................................8
BASIC SWITCH COMMANDS .................................................................................................. 10
SWITCH PORT COMMANDS ...................................................................................................20
PORT SECURITY COMMANDS ...............................................................................................23
NETWORK MANAGEMENT (SNMP) COMMANDS ................................................................. 26
SWITCH UTILITY COMMANDS................................................................................................45
NETWORK MONITORING COMMANDS..................................................................................53
MULTIPLE SPANNING TREE PROTOCOL (MSTP) COMMANDS..........................................66
FORWARDING DATABASE COMMANDS...............................................................................78
BROADCAST STORM CONTROL COMMANDS .....................................................................85
QOS COMMANDS ....................................................................................................................87
PORT MIRRORING COMMANDS............................................................................................. 94
VLAN COMMANDS...................................................................................................................97
ASYMMETRIC VLAN COMMANDS........................................................................................ 102
LINK AGGREGATION COMMANDS ...................................................................................... 104
IP-MAC BINDING .................................................................................................................... 109
LIMITED IP MULTICAST ADDRESS ...................................................................................... 113
BASIC IP COMMANDS ........................................................................................................... 115

IGMP SNOOPING COMMANDS ............................................................................................. 118
DHCP RELAY.......................................................................................................................... 128
802.1X COMMANDS ............................................................................................................... 134
ACCESS CONTROL LIST (ACL) COMMANDS .....................................................................145
TRAFFIC SEGMENTATION COMMANDS .............................................................................154
TIME AND SNTP COMMANDS............................................................................................... 156
ARP COMMANDS...................................................................................................................162
ROUTING TABLE COMMANDS ............................................................................................. 166
MAC NOTIFICATION COMMANDS........................................................................................ 168
ACCESS AUTHENTICATION CONTROL COMMANDS ........................................................ 172
SSH COMMANDS ...................................................................................................................193
SSL COMMANDS ...................................................................................................................200
D-LINK SINGLE IP MANAGEMENT COMMANDS................................................................. 206
COMMAND HISTORY LIST .................................................................................................... 215
TECHNICAL SPECIFICATIONS ............................................................................................. 218

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1
Introduction
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.
DES-3526/DES-3526DC Managed Layer 2 Fast Ethernet switches are members of the D-Link xStack family. Ranging from
10/100Mbps edge switches to core gigabit switches, the xStack switch family has been future-proof designed to provide a stacking
architecture with fault tolerance, flexibility, port density, robust security and maximum throughput with a user-friendly
management interface for the networking professional.
Please take note that if this device was purchased outside of Europe, certain cosmetic differences between the actual switch and
images in this document will be apparent to the reader, such as the faceplate and the manual cover. The DES-3526/DES-3526DC
has already joined the xStack family for the European market and is soon to be xStack converted, universally. Changes are made
to the appearance of the device only and no configuration or internal hardware alterations occur.
Accessing the Switch via the Serial Port
The Switch’s serial port’s default settings are as follows:
• 9600 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 to 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 −DES-3526:4#.This is
the command line where all commands are input.

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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.
Figure 1-2. Boot Screen
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 zrepresents 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.

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Figure 1-3. Assigning an IP Address
In the above example, the Switch was assigned an IP address of 10.41.44.254 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.

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2
Using the Console CLI
The DES-3526 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 an 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 RAM 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 configuration 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
• 9600 baud
• 8 data bits
• No parity
• One stop bit
• No flow control
You can also access the same functions over a Telnet interface. Once you have set an IP address for your Switch, you 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:

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Figure 2-1. Initial Console Screen after logging in
Commands are entered at the command prompt, DES-3526:4#.
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 you enter a command without its required parameters, the CLI will prompt you with a Next possible completions:
message.

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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 you 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, you can see all of the next possible sub-commands, 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.

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Figure 2-5. The Next Available Commands Prompt
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 show command with no additional parameters, the CLI will then display all of the possible next
parameters.
Figure 2-6. Next possible completions: Show Command
In the above example, all of the possible next parameters for the show command are displayed. At the next command prompt, the
up arrow was used to re-enter the show command, followed by the account parameter. The CLI then displays the user accounts
configured on the Switch.

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3
Command Syntax
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 create ipif <ipif_name> vlan <vlan_name 32> ipaddress
<network_address>
Description In the above syntax example, you must supply an IP interface name
in the <ipif_name> space, a VLAN name in the <vlan_name 32>
space, and the network address in the <network_address> space.
Do not type the angle brackets.
Example
Command
create ipif Engineering vlan Design ipaddress
10.24.22.5/255.0.0.0
[square brackets]
Purpose Encloses a required value or set of required arguments. One value
or argument can be specified.
Syntax create account [admin | user]
Description In the above syntax example, you must specify either an admin or a
user level account to be created. Do not type the square brackets.
Example
Command
create account admin
| vertical bar
Purpose Separates two or more mutually exclusive items in a list, one of
which must be entered.
Syntax show snmp [community | detail]
Description In the above syntax example, you must specify either community,
or detail. Do not type the backslash.
Example
Command
show snmp community
{braces}
Purpose Encloses an optional value or set of optional arguments.
Syntax reset {[config | system]}
Description In the above syntax example, you have the option to specify config
or detail. It is not necessar
y
to s
p
ecif
y
either o
p
tional value
,
however

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{braces}
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.
Example
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.

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4
Basic Switch Commands
The basic switch commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the
following table.
Command Parameters
create account [admin | user] <username 15>
config account <username 15>
show account
delete account <username 15>
show session
show switch
show serial_port
config serial_port {baud_rate [9600 | 19200 | 38400 | 115200] auto_logout [never | 2_minutes | 5_minutes
| 10_minutes | 15_minutes]}
enable clipaging
disable clipaging
enable telnet <tcp_port_number 1-65535>
disable telnet
enable web <tcp_port_number 1-65535>
disable web
save
reboot
reset {[config | system]}
login
logout
Each command is listed, in detail, in the following sections.
create account
Purpose Used to create user accounts.
Syntax create [admin | user] <username 15>
Description 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 8 user accounts can be created.
Parameters admin <username>
user <username>
Restrictions Only Administrator-level users can issue this command.
Usernames can be between 1 and 15 characters.
Passwords can be between 0 and 15 characters.
Example usage:
To create an administrator-level user account with the username “dlink”.

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DES-3526:4#create account admin dlink
Command: create account admin dlink
Enter a case-sensitive new password:****
Enter the new password again for confirmation:****
Success.
DES-3526:4#
config account
Purpose Used to configure user accounts
Syntax config account <username>
Description The config account command configures a user account that has
been created using the create account command.
Parameters <username>
Restrictions Only Administrator-level users can issue this command.
Usernames can be between 1 and 15 characters.
Passwords can be between 0 and 15 characters.
Example usage:
To configure the user password of “dlink” account:
DES-3526:4#config account dlink
Command: config account dlink
Enter a old password:****
Enter a case-sensitive new password:****
Enter the new password again for confirmation:****
Success.
DES-3526:4#
show account
Purpose Used to display user accounts
Syntax show account
Description Displays all user accounts created on the Switch. Up to 8 user
accounts can exist at one time.
Parameters None.
Restrictions Only Administrator-level users can issue this command.
Example usage:
To display the accounts that have been created:

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DES-3526:4#show account
Command: show account
Current Accounts:
Username Access Level
--------------- ------------
dlink Admin
Total Entries: 1
DES-3526:4#
delete account
Purpose Used to delete an existing user account.
Syntax delete account <username>
Description The delete account command deletes a user account that has
been created using the create account command.
Parameters <username>
Restrictions Only Administrator-level users can issue this command.
Example usage:
To delete the user account “System”:
DES-3526:4#delete account System
Command: delete account System
Success.
DES-3526:4#
show session
Purpose Used to display a list of currently logged-in users.
Syntax show session
Description This command displays a list of all the users that are logged-in at
the time the command is issued.
Parameters None.
Restrictions None.
Example usage:
To display the way that the users logged in:
DES-3526:4#show session
Command: show session
ID Login Time Live Time From Level Name
-- ------------------------------ --------- ------------ ----- -----------
*8 00000 days 00:00:37 03:36:27 Serial Port 4 Anonymous

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show switch
Purpose Used to display general information about the Switch.
Syntax show switch
Description This command displays information about the Switch.
Parameters None.
Restrictions Only Administrator-level users can issue this command.
Example usage:
To display the Switch’s information:
DES-3526:4#show switch
Command: show switch
Device Type : DES-3526 Fast Ethernet Switch
Combo Port : 1000Base-T + 1000Base-T
MAC Address : 00-01-02-03-04-00
IP Address : 10.41.44.22 (Manual)
VLAN Name : default
Subnet Mask : 255.0.0.0
Default Gateway : 0.0.0.0
Boot PROM Version : Build 3.00.005
Firmware Version : Build 3.06-B09
Hardware Version : 0A1
Device S/N :
Power Status : Main – Normal, Redundant – Not Present
System Name : DES-3526
System Location : 7th_flr_east_cabinet
System Contact : Julius_Erving_212-555-6666
Spanning Tree : Disabled
GVRP : Disabled
IGMP Snooping : Disabled
TELNET : Enabled (TCP 23)
WEB : Enabled (TCP 80)
RMON : Enabled
Asymmetric VLAN : Disabled
DES-3526:4#
show serial_port
Purpose Used to display the current serial port settings.
Syntax show serial_port
Description This command displays the current serial port settings.
Parameters None.
Restrictions None
Example usage:
To display the serial port setting:

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DES-3526:4#show serial_port
Command: show serial_port
Baud Rate : 9600
Data Bits : 8
Parity Bits : None
Stop Bits : 1
Auto-Logout : 10 mins
DES-3526:4#
config serial_port
Purpose Used to configure the serial port.
Syntax config serial_port {baud_rate [9600 | 19200 | 38400 | 115200] |
auto_logout [never | 2_minutes | 5_minutes | 10_minutes |
15_minutes]}
Description This command is used to configure the serial port’s baud rate and auto
logout settings.
Parameters baud_rate [9600 | 19200 | 38400 | 115200]−The serial bit rate that will be
used to communicate with the management host. There are four options:
9600, 19200, 38400, 115200.
never −No time limit on the length of time the console can be open with
no user input.
2_minutes −The console will log out the current user if there is no user
input for 2 minutes.
5_minutes −The console will log out the current user if there is no user
input for 5 minutes.
10_minutes −The console will log out the current user if there is no user
input for 10 minutes.
15_minutes −The console will log out the current user if there is no user
input for 15 minutes.
Restrictions Only administrator-level users can issue this command.
Example usage:
To configure baud rate:
DES-3526:4#config serial_port baud_rate 115200
Command: config serial_port baud_rate 115200
Success.
DES-3526:4#

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enable clipaging
Purpose Used to pause the scrolling of the console screen when the show
command displays more than one page.
Syntax enable clipaging
Description 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.
Parameters None.
Restrictions Only administrator-level users can issue this command.
Example usage:
To enable pausing of the screen display when the show command output reaches the end of the page:
DES-3526:4#enable clipaging
Command: enable clipaging
Success.
DES-3526:4#
disable clipaging
Purpose Used to disable the pausing of the console screen scrolling at the
end of each page when the show command displays more than one
screen of information.
Syntax disable clipaging
Description 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.
Parameters None.
Restrictions Only administrator-level users can issue this command.
Example usage:
To disable pausing of the screen display when show command output reaches the end of the page:
DES-3526:4#disable clipaging
Command: disable clipaging
Success.
DES-3526:4#
enable telnet
Purpose Used to enable communication with and management of the Switch
using the Telnet protocol.
Syntax enable telnet <tcp_port_number 1-65535>
Description 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.

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enable telnet
Parameters <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.
Restrictions Only administrator-level users can issue this command.
Example usage:
To enable Telnet and configure port number:
DES-3526:4#enable telnet 23
Command: enable telnet 23
Success.
DES-3526:4#
disable telnet
Purpose Used to disable the Telnet protocol on the Switch.
Syntax disable telnet
Description This command is used to disable the Telnet protocol on the Switch.
Parameters None.
Restrictions Only administrator-level users can issue this command.
Example usage:
To disable the Telnet protocol on the Switch:
DES-3526:4#disable telnet
Command: disable telnet
Success.
DES-3526:4#
enable web
Purpose Used to enable the HTTP-based management software on the Switch.
Syntax enable web <tcp_port_number 1-65535>
Description 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.
Parameters <tcp_port_number 1-65535> −The TCP port number. TCP ports are
numbered between 1 and 65535. The “well-known” port for the Web-
based management software is 80.
Restrictions Only administrator-level users can issue this command.
Example usage:
To enable HTTP and configure port number:

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DES-3526:4#enable web 80
Command: enable web 80
Success.
DES-3526:4#
disable web
Purpose Used to disable the HTTP-based management software on the
Switch.
Syntax disable web
Description This command disables the Web-based management software on
the Switch.
Parameters None.
Restrictions Only administrator-level users can issue this command.
Example usage:
To disable HTTP:
DES-3526:4#disable web
Command: disable web
Success.
DES-3526:4#
save
Purpose Used to save changes in the Switch’s configuration to non-volatile
RAM.
Syntax save
Description This command is used to enter the current switch configuration into
non-volatile RAM. The saved switch configuration will be loaded into
the Switch’s memory each time the Switch is restarted.
Parameters None
Restrictions Only administrator-level users can issue this command.
Example usage:
To save the Switch’s current configuration to non-volatile RAM:
DES-3526:4#save
Command: save
Saving all configurations to NV-RAM... Done.
DES-3526:4#