D-Link DES-3250G Reference Manual
DES-3250G
Layer 2 Switch
Command Line Interface
Reference Manual
First Edition (February 2003)
DES3250TG.A1
Printed In Taiwan
RECYCLABLE
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Copyright 2003 D-Link Corporation.
Contents subject to change without prior notice.
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Table of Contents
Introduction ........................................................................ 11
Using the Console CLI ......................................................... 16
Command Syntax................................................................ 24
Basic Switch Commands..................................................... 29
Switch Port Commands ....................................................... 49
Network Management Commands ....................................... 53
Download/Upload Commands ............................................ 76
Network Monitoring Commands .......................................... 80
Spanning Tree Commands .................................................. 88
Layer 2 Forwarding Database Commands ........................... 96
Broadcast Storm Control Commands ................................ 111
QOS Commands ............................................................... 115
Port Mirroring Commands................................................. 134
VLAN Commands .............................................................. 141
Link Aggregation Commands............................................. 155
IP Interface Commands ..................................................... 163
IGMP Snooping Commands............................................... 167
ix
Routing Table Commands ................................................. 181
Command History List ...................................................... 185
Technical Specifications .................................................... 191
Switch System Messages ................................................... 194
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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
User’s Guide.
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/ANSI terminal and a serial port configured
as above is then connected to the switch’s serial port via an RS232 DB-9 cable.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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 Console screen.
There is no initial username or password. Just press the Enter
key twice to display the CLI input cursor − local>. 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.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
The switch is also assigned a unique MAC address by the
factory. This MAC address cannot be changed, and can be found
from the initial boot console screen – shown below.
Figure 1-2. Boot Screen
The switch’s MAC address can also be found from 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
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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 Webbased management agent.
Figure 1-3. Assigning the Switch an IP Address
In the above example, the switch was assigned an IP address of
10.24.22.5 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
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
via Telnet and the CLI or via the Web-based management agent
using the above IP address to connect to the switch.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
2
USING THE CONSOLE
CLI
The DES-3250TG 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.
Switch configuration settings are saved to nonvolatile RAM using 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
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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/ANSI compatible
• 9,600 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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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
Figure 2-1. Initial Console Screen
Commands are entered at the command prompt, local>.
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.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
Figure 2-2. The ? Command
The dir command has the same function as the ? command.
When you enter a command without its required parameters,
the CLI will prompt you with a Next possible completions:
message.
Alternatively, if you hit the Tab key immediately after you have
entered a command, the CLI will display all the next available
parameters sequentially.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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.
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.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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 User name 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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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
Figure 2-5. The Available Commands Prompt
The top-level commands consist of commands like 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.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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.
<angle brackets>
Purpose Encloses a variable or value that must be
specified.
Syntax
Description In the above syntax example, you must
Example
Command
create ipif <ipif_name> vlan
<vlan_name> ipaddress
<network_address>
supply an IP interface name in the
<ipif_name> space, a VLAN name in the
<vlan_name> space, and the network
address in the <network_address> space.
Do not type the angle brackets.
create ipif Engineering vlan Design
ipaddress 10.24.22.5/255.0.0.0
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
[square brackets]
Purpose Encloses a required value or set of required
arguments. One or more values or
arguments can be specified.
Syntax
Description In the above syntax example, you must
Example
Command
create account [admin/user]
specify either an admin or a user level
account to be created. Do not type the
square brackets.
create account admin
/slash
Purpose Separates two or more mutually exclusive
items in a list − one of which must be
entered.
Syntax
Description In the above syntax example, you must
show snmp [community/trap receiver]
specify either community, trap receiver, or
detail. Do not type the backslash.
Example
Command
show snmp community
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
{braces}
Purpose Encloses an optional value or set of
optional arguments.
Syntax
Description In the above syntax example, you must
Example
command
config igmp [<ipif_name>/all] {version
<value>/query_interval
<sec>/max_response_time <sec>/
robustness_variable
<value>/last_member_query_interval
<value>/state [enabled/disabled]}
choose to enter an IP interface name in the
<ipif_name> space or all, but version
<value>, query_interval <sec>,
max_response_time <sec>,
robustness_variable <value>,
last_member_query_interval <value>, and
state [enabled/disabled] are all optional
arguments. You can specify any or all of
the arguments contained by braces. Do not
type the braces.
config igmp all version 2
Line Editing Key Usage
Delete
Deletes character under the cursor and
then shifts the remaining characters in the
line to the left.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
Line Editing Key Usage
Backspace
Insert
Left Arrow
Right Arrow
Tab
Deletes the character to the left of the
cursor and shifts the remaining characters
in the line to the left.
Can be toggled on or off. When toggled on,
inserts text at the current cursor position
and shifts the remainder of the line to the
left.
Moves the cursor to the left.
Moves the cursor to the right.
Shifts the cursor to the next field to the
left.
Multiple Page Display Control Keys
Space
CTRL+c
ESC
Displays the next page.
Stops the display of remaining pages when
multiple pages are to be displayed.
Stops the display of remaining pages when
multiple pages are to be displayed.
n
p
q
r
Displays the next page.
Displays the previous page.
Stops the display of remaining pages when
multiple pages are to be displayed.
Refreshes the pages currently displaying.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
Line Editing Key Usage
a
Enter
Displays the remaining pages without
pausing between pages.
Displays the next line or table entry.
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
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>
config account <username>
show account
delete account
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>
disable telnet
enable web <tcp_port_number>
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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide
Command Parameters
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
Description The create account command is used to
Parameters Admin <username>
Restrictions Only Administrator-level users can issue
create [admin/user] <username>
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.
User <username>
this command.
Usernames can be between 1 and 15
characters.
Passwords can be between 0 and 15
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