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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This equipment has been tested and found to comply with the limits
for a Class A 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
this user’s guide, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be
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to take adequate measures.

VCCI Warning

BSMI Warning

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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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

create account

characters.

Example Usage:

To create an administrator-level user account with the
username “dlink”.

local>create account admin dlink
Command: create account admin dlink

Enter a case-sensitive new password:****
Enter the new password again for confirmation:****
Success.

local>

config account

Purpose Used to configure user accounts

Syntax

Description The config account command configures a

Parameters <username>

Restrictions Only Administrator-level users can issue

config account <username>

user account that has been created using
the create account command.

this command.

31

config account

Example Usage:

To configure the user password of “dlink” account:

local>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.

local>

DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

Usernames can be between 1 and 15
characters.

Passwords can be between 0 15
characters.

show account

Purpose Used to display user accounts

Syntax

Description Displays all user accounts created on the

Parameters none.

show account

switch. Up to 8 user accounts can exist on
the switch at one time.

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

show account

Restrictions none.

Example Usage:

To display the accounts which have been created:

local>show account
Command: show account

Current Accounts:
Username Access Level

--------------- -----------­ dlink Admin
local>

delete account

Purpose Used to delete an existing user account

Syntax

Description The delete account command deletes a

Parameters <username>

Restrictions Only Administrator-level users can issue

Example Usage:

To delete the user account “System”:

delete account <username>

user account that has been created using
the create account command.

this command.

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

local>delete account System
Command: delete account System

Success.

local>

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:

local>show session
ID Live Time From Level Name

--- ------------ ------------ ------- ---------------­ 8 0:17:16.2 Serial Port 4 Anonymous

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

show switch

Purpose Used to display information about the

switch.

Syntax

show switch

Description This command displays information about

the switch.

Parameters none.

Restrictions none.

Example Usage:

To display the switch information:

local>show switch
Command: show switch

Device Type : DES-3250 Fast-Ethernet Switch
Ext. Ports : 1000TX + 1000TX
MAC Address : 00-01-02-03-04-00
IP Address : 10.90.90.90 (Manual)
VLAN Name : default
Subnet Mask : 255.0.0.0
Default Gateway : 0.0.0.0
Boot PROM Version : Build 1.00.001
Firmware Version : Build 1.00.024
Hardware Version : 0A1
System Name :
System Location :
System Contact :
Spanning Tree : Disabled
GVRP : Disabled

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

IGMP Snooping : Disabled
TELNET : Enabled (TCP 23)
WEB : Enabled (TCP 80)
RMON : Disabled
local>

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:

local>show serial_port
Command: show serial_port

Baud Rate : 9600
Data Bits : 8
Parity Bits : None
Stop Bits : 1
Auto-Logout : 10 mins
local>

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config serial_port

Purpose Used to configure the serial port.

Syntax

Description

Parameter
s

config serial_port
{baud_rate[9600/19200/38400/115200]/auto
_logout
[never/2_minutes/5_minutes/10_minutes/
15_minutes]}

This command is used to configure the serial
port’s baud rate and auto logout settings.

[9600/19200/38400/115200] − The serial bit
rate that will be used to communicate with the
management host.

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.

Restrictions

15_minutes − The console will log out the
current user if there is no user input for 15
minutes.

Only administrator-level users can issue this
command.

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Example Usage:

To configure baud rate:

local>config serial_port baud_rate 9600
Command: config serial_port baud_rate 9600

Success.

local>

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 will cause 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:

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To enable pausing of the screen display when show
command output reaches the end of the page:

local>enable clipaging
Command: enable clipaging

Success.

local>

disable clipaging

Purpose Used to disable the pausing of the console

screen scrolling at the end of each page
when the show command would display
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:

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local>disable clipaging
Command: disable clipaging

Success.

local>

enable telnet

Purpose Used to enable communication with and

management of the switch using the Telnet
protocol.

Syntax

enable telnet <tcp_port_number>

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.

Parameters

<tcp_port_number> − 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:

local>enable telnet 23
Command: enable telnet 23

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

Success.

local>

disable telnet

Purpose Used to disable the Telnet protocol on the

switch.

Syntax

Description This command is used to disable the Telnet

Parameters none.

Restrictions Only administrator-level users can issue

Example Usage:

To disable the Telnet protocol on the switch:

local>disable telnet
Command: disable telnet

Success.

local>

disable telnet

protocol on the switch.

this command.

enable web

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enable web

Purpose Used to enable the HTTP-based

management software on the switch.

Syntax

Description This command is used to enable the Web-

Parameters

Restrictions Only administrator-level users can issue

Example Usage:

To enable HTTP and configure port number:

local>enable web 80
Command: enable web 80

Success.

local>

enable web <tcp_port_number>

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> − The TCP port
number. TCP ports are numbered between
1 and 65535. The “well-known” port for the
Web-based management software is 80.

this command.

disable web

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disable web

Purpose Used to disable the HTTP-based

management software on the switch.

Syntax

Description This command disables the Web-based

Parameters none.

Restrictions Only administrator-level users can issue

Example Usage:

To disable HTTP:

local>disable web
Command: disable web

Success.

local>

disable web

management software on the switch.

this command.

save

Purpose Used to save changes in the switch’s

configuration to non-volatile RAM.

Syntax

Description This command is used to enter the current

Save

switch configuration into non-volatile RAM.

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save

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:

local>save
Command: save

Saving all settings to NV-RAM... 100%
done.
local>

reboot

Purpose Used to restart the switch.

Syntax

Description This command is used to restart the

Parameters none.

Restrictions none.

reboot

switch.

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Example Usage:

To restart the switch:

local>reboot
Command: reboot

Are you sure want to proceed with the
system reboot? (y/n)

Please wait, the switch is rebooting...

reset

Purpose Used to reset the switch to the factory

default settings.

Syntax

reset {config/system}

Description This command is used to restore the

switch’s configuration to the default
settings assigned from the factory.

Parameters

config − If config is specified, all of the
factory default settings are restored on the
switch except for the IP address, user
accounts, and the switch history log.

system − If system is specified all of the
factory default settings are restored on the
switch.

If no parameter specified, the switch’s
current IP address, user accounts, and
switch history log are retained. All other
parameters are restored to their factory
default settings.

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reset

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To restore all of the switch’s parameters to their default
values:

local>reset config
Command: reset config

Success.

local>

login

Purpose Used to log in a user to the switch’s

console.

Syntax

Description This command is used to initiate the login

Parameters none.

Restrictions none.

Example Usage:

login

procedure. The user will be prompted for
his Username and Password.

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To initiate the login procedure:

local>login
Command: login

UserName:

logout

Purpose Used to log out a user from the switch’s

console.

Syntax

logout

Description This command terminates the current

user’s session on the switch’s console.

Parameters none.

Restrictions none.

Example Usage:

To terminate the current user’s console session:

local>logout

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5

SWITCH PORT

COMMANDS

The switch port commands in the Command Line Interface (CLI)
are listed (along with the appropriate parameters) in the
following table.

Command Parameters

config ports <portlist/all>

speed
[auto/10_half/10_full/100_half/100_full/
1000_half/1000_full]
learning [enabled/disabled]
state [enabled/disabled]

show ports <portlist/all>

Each command is listed, in detail, in the following sections.

config ports

Purpose Used to configure the switch’s Ethernet port

settings.

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config ports

DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

Syntax

config ports [<portlist/all>] {speed
[auto/10_half/10_full/100_half/100_full/

1000_half/1000_full]
learning [enabled/disabled]
state [enabled/disabled]}

Description This command allows for the configuration of

the switch’s Ethernet ports. Only the ports
listed in the <portlist> will be affected.

Parameters

all − Displays all ports on the switch to be
configured.

portlist − Specifies a range of ports to be
configured. The port list is specified by listing
the beginning port number and the highest port
number of the range. The beginning and end of
the port list range are separated by a dash. For
example, 3 would specify port 3. 4 specifies port

4. 3-4 specifies all of the ports between port 3
and port 4 − in numerical order.

auto − Enables auto-negotiation for the specified
range of ports.

[10/100/1000] − Configures the speed in Mbps
for the specified range of ports.

[half/full] − Configures the specified range of
ports as either full- or half-duplex.

learning [enabled/disabled] − Enables or
disables the MAC address learning on the

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

config ports

specified range of ports.

state [enabled/disabled] − Enables or disables
the specified range of ports.

Restrictions Only administrator-level users can issue this

command.

Example Usage:

To configure the speed of port 3 to be 10 Mbps, full
duplex, learning and state enabled:

local>config ports 1-3 speed 10_full learning enabled
state enabled

Command: config ports 1-3 speed 10_full learning
enabled state enabled

Success.

show ports

Purpose Used to display the current configuration of

a range of ports.

Syntax

Description This command is used to display the

Parameters

show ports {<portlist/all>}

current configuration of a range of ports.

all − Displays all ports on the switch.

<portlist> − Specifies a range of ports to
be configured. The port list is specified by
listing the beginning port number and the

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show ports

highest port number of the range. The
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.

Restrictions none.

Example Usage:

To display the configuration of the ports 1-7:

local>show ports 1-7
Command: show ports 1-7

Port Port Settings Connection Address
State Speed/Duplex Speed/Duplex Learning

---- -------- --------------------- --------------------- ----------­ 1 Enabled Auto Link Down Enabled
2 Enabled Auto Link Down Enabled
3 Enabled Auto Link Down Enabled
4 Enabled Auto Link Down Enabled
5 Enabled Auto Link Down Enabled
6 Enabled Auto Link Down Enabled
7 Enabled Auto Link Down Enabled

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

6

NETWORK MANAGEMENT

COMMANDS

The network management commands in the Command Line
Interface (CLI) are listed (along with the appropriate parameters)
in the following table.

Command Parameters

create snmp
community

delete snmp
community

create snmp
trap_receiver

delete snmp
trap_receiver

enable rmon
disable rmon
config snmp

community
config snmp

system_contact
config snmp

system_location

<community_string>
[readonly/readwrite]

<community_string>

<ipaddr>
<community_string>

<ipaddr>

<community_string>
[readonly/readwrite]

<sw_contact>

<sw_location>

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

Command Parameters

config snmp
system_name

config snmp
trap_receiver

enable snmp traps
disable snmp

traps
enable snmp

authenticate traps
disable snmp

authenticate traps
create

trusted_host
show

trusted_host
delete

trusted_host
show snmp [community/trap_receiver]
ping <ipaddr>

Each command is listed, in detail, in the following sections.

<sw_name>

<ipaddr>
<community_string>

<ipaddr>

<ipaddr>

<ipaddr>

times <value>
timeout <sec>

create snmp community

Purpose Used to create an SNMP community string.

Syntax

create snmp community
<community_string>
[readonly/readwrite]

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create snmp community

Description This command is used to create an SNMP

community string and to specify the string
as enabling read only or read-write
privileges for the SNMP management host.

Parameters

<community_string> − An alphanumeric
string of up to 32 characters used to
authentication of users wanting access to
the switch’s SNMP agent.

readonly − Allows the user using the above
community string to have read only access
to the switch’s SNMP agent. The default
read only community string is public.

readwrite − Allows the user using the above
community string to have read and write
acces to the switch’s SNMP agent. The
default read write community string is
private.

Restrictions Only administrator-level users can issue

this command. A maximum of 4
community strings can be specified.

Example Usage:

To create a read-only level SNMP community “System”:

local>create snmp community System readwrite
Command: create snmp community System readwrite

Success.

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

local>

delete snmp community

Purpose Used to delete an SNMP community string

previously entered on the switch.

Syntax

delete snmp community
<community_string>

Description This command is used to delete an SNMP

community string entered on the switch
using the create SNMP community
command above.

Parameters

<community_string> − An alphanumeric
string of up to 32 characters used to
authentication of users wanting access to
the switch’s SNMP agent.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To delete a read-only level SNMP community “System”:

local>delete snmp community System
Command: delete snmp community System

Success.

local>

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

create snmp trap_receiver

Purpose Used to specify a management station, by

IP address and community string, that will
receive traps generated by the switch’s
SNMP agent.

Syntax

create snmp trap_receiver <ipaddr>
<community_string>

Description This command is used to specify the IP

address of a management station that will
receive traps generated by the switch’s
SNMP agent and the community string that
will be used to authenticate the
management station’s privileges.

Parameters

<ipaddr> − The IP address of a
management station that will receive SNMP
traps generated by the switch’s SNMP
agent.

<community_string> − An alpha-numeric
string of up to 32 characters that will be
used to authenticate management stations
that want to receive SNMP traps from the
switch’s SNMP agent.

Restrictions Only administrator-level users can issue

this command. A maximum of 3 trap
receivers can be specified.

Example Usage:

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To create a trap receiver 10.1.1.1 in read-only level
SNMP community:

local>create snmp trap_receiver 10.1.1.1 System
Command: create snmp trap_receiver 10.1.1.1 System

Success.

local>

delete snmp trap_receiver

Purpose Used to delete a trap receiver entry on the

switch made using create SNMP
trap_reciever above.

Syntax

delete snmp trap_reciever <ipaddr>

Description The command allows the user to delete an

SNMP trap receiver specified previously
using the create trap_receiver command
above.

Parameters

<ipaddr> − The IP address of the
management station that is currently
specified to receive traps from the switch’s
SNMP agent. This management station will
be deleted from the list of up to three that
can be entered using the create SNMP
trap_receiver commmand above.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

To delete a trap receiver 10.1.1.1:

local>delete snmp trap_receiver 10.1.1.1
Command: delete snmp trap_receiver 10.1.1.1

Success.

local>

config snmp community

Purpose Used to create an SNMP community string.

Syntax

config snmp community
<community_string>
[readonly/readwrite]

Description This command is used to create an SNMP

community string on the switch that will be
used to authenticate management stations
that want to access the switch using SNMP
management software.

Parameters

<community_string> − An alpha-numeric
string of up to 32 characters that will be
used to authenticate management stations
that want to access the switch’s SNMP
agent.

readonly − Allows the user using the above
community string to have read only access
to the switch’s SNMP agent. The default
read only community string is public.

readwrite − Allows the user using the above
community string to have read and write
access to the switch’s SNMP agent. The

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

config snmp community

default read write community string is
private.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To configure an SNMP community “System”:

local>config snmp community System readwrite
Command: config snmp community System readwrite

Success.

Local>

config snmp trap_receiver

Purpose Used to configure an SNMP trap receiver.

Syntax

Description This command is used to configure an

Parameters

config snmp trap_receiver <ipaddr>
<community_string>

SNMP trap receiver on the switch that will
be used to authenticate management
stations that want to access the switch
using SNMP management software.

<ipaddr> − The IP address of the
management station that is currently
specified to receive traps from the switch’s
SNMP agent. This management station will

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

config snmp trap_receiver

be deleted from the list of up to three that
can be entered using the create SNMP
trap_receiver commmand above.

<community_string> − An alpha-numeric
string of up to 32 characters that will be
used to authenticate management stations
that want to access the switch’s SNMP
agent.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To configure an SNMP trap receiver “mink” with an IP
address of 10.1.1.2:

Local>config snmp trap_receiver 10.1.1.2 mink
Command: config snmp trap_receiver 10.1.1.2 mink

Success.

local>

config snmp system_name

Purpose Used to configure a name for the switch.

Syntax

config snmp system_name <sw_name>

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config snmp system_name

Description This command is used to give the switch an

alpha-numeric name of up to 128
characters.

Parameters

Restrictions Only administrator-level users can issue

Example Usage:

To configure the switch name for “DES-3250”:

local>config snmp system_name DES3250
Command: config snmp system_name DES3250

Success.

local>

<sw_name> − An alpha-numeric name for
the switch of up to 128 characters.

this command.

config snmp system_location

Purpose Used to enter a description of the location

of the switch.

Syntax

Description This command is used to enter a

config snmp system_location
<sw_location>

description of the location of the switch. A
maximum of 128 characters can be used.

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config snmp system_location

Parameters

Restrictions Only administrator-level users can issue

Example Usage:

To configure the switch location for “Taiwan”:

.

local>config snmp system_location Taiwan
Command: config snmp system_location Taiwan

Success.

local>

<sw_location> − A description of the
location of the switch. A maximum of 128
characters can be used.

this command.

config snmp system_contact

Purpose Used to enter the name of a contact person

who is responsible for the switch.

Syntax

Description This command is used to enter the name

config snmp system_contact
<sw_contact>

and/or other information to identify a
contact person who is responsible for the
switch. A maximum of 128 characters can
be used.

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config snmp system_contact

Parameters

Restrictions Only administrator-level users can issue

Example Usage:

To configure the switch contact to “ctsnow”:

.

local>config snmp system_contact ctsnow
Command: config snmp system_contact ctsnow

Success.

local>

<sw_contact> − A maximum of 128
characters used to identify a contact
person who is responsible for the switch.

this command.

enable rmon

Purpose Used to enable RMON on the switch.

Syntax

Description This command is used, in conjunction with

enable rmon

the disable RMON command below, to
enable and disable remote monitoring
(RMON) on the switch.

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enable rmon

Parameters none.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To enable RMON:

local>enable rmon
Command: enable rmon

Success.

local>

disable rmon

Purpose Used to disable RMON on the switch.

Syntax

Description This command is used, in conjunction with

Parameters none.

Restrictions Only administrator-level users can issue

Example Usage:

disable rmon

the enable rmon command above, to enable
and disable remote monitoring (RMON) on
the switch.

this command.

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To disable RMON:

local>disable rmon
Command: disable rmon

Success.

local>

show snmp

Purpose Used to display the SNMP configuration

entered on the switch.

Syntax

show snmp
[community_string/trap_receiver]

Description This command will display the current

SNMP configuration on the switch.

Parameters

community_string − Displays all of the
community strings configured on the
switch. A community string is an alpha­numeric string of up to 32 characters used
to authenticate management stations
wanting access to the switch’s SNMP agent.

trap_receiver − Displays all of the
trap_receiver IP addresses configured on
the switch. A trap receiver is a host on the
same subnet as the switch that can receive
SNMP trap messages.

Restrictions none.

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Example Usage:

To display SNMP configurations:

local>show snmp
Command: show snmp

System Name : DES3250
System Location : Taiwan
System Contact : dlink
SNMP Trap : Enabled
Authenticate Traps : Enabled

Community String Rights

-------------------------------------------- --------------­System Read/Write
public Read-Only
Develop Read-Only
private Read/Write

Total Entries: 4

IP Address Community String

--------------- ------------------------------------------------------------

10.1.1.1 Develop

Total Entries: 1

local>

create trusted_host

Purpose Used to create trusted hosts.

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

create trusted_host

Syntax

Description This command is used to create trusted

Parameters

Restrictions Only administrator-level users can issue

Example Usage:

To create a trusted host:

local>create trusted_host
Command: create trusted_host 10.1.1.1

Success.

local>

create trusted_host <ipaddr>

hosts. A trusted host is a recipient of
SNMP, Web, and Telnet messages
generated by the switch’s SNMP agent.

<ipaddr> − The IP address of the trusted
host.

this command.

show trusted_host

Purpose Used to display a list of trusted hosts

entered on the switch using the create
trusted_host command above.

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

show trusted_host

Syntax

Description This command is used to display a list of

Parameters none.

Restrictions none.

Example Usage:

To display the list of trusted hosts:

local>show trusted_host
Command: show trusted_host

Management Stations
IP Address:

-------------------------

10.1.1.1
Total Entries: 1
local>

show trusted_host

trusted hosts entered on the switch using
the create trusted_host command above.

delete trusted_host

Purpose Used to delete a trusted host entry made

using the create trusted_host command
above.

Syntax

Description This command is used to delete a trusted

delete trusted _host <ipaddr>

host entry made using the create

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

delete trusted_host

trusted_host command above.

Parameters

Restrictions Only administrator-level users can issue

Example Usage:

To delete a trusted host with an IP address

10.48.74.121:

local>delete trusted_host 10.48.74.121
Command: delete trusted_host 10.48.74.121

Success.

local>

<ipaddr> − The IP address of the trusted
host.

this command.

enable snmp traps

Purpose Used to enable SNMP trap support.

Syntax

Description This command is used to enable SNMP trap

Parameters none.

Restrictions Only administrator-level users can issue

enable snmp traps

support on the switch.

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enable snmp traps

this command.

Example Usage:

To turn on SNMP trap support:

local>enable snmp traps
Command: enable snmp traps

Success.

local>

disable snmp traps

Purpose Used to disable SNMP trap support on the

switch.

Syntax

Description This command is used to disable SNMP

Parameters none.

Restrictions Only administrator-level users can issue

Example Usage:

enable snmp traps

trap support on the switch.

this command.

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To prevent SNMP traps from being sent from the switch:

local>disable snmp traps
Command: disable snmp traps

Success.

local>

enable snmp authenticate traps

Purpose Used to enable SNMP authentication trap

support.

Syntax

enable snmp authenticate traps

Description This command is used to enable SNMP

authentication trap support on the switch.

Parameters none.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To turn on SNMP authentication trap support:

local>enable snmp authenticate traps
Command: enable snmp authenticate traps

Success.

local>

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

disable snmp authenticate traps

Purpose Used to disable SNMP authentication trap

support.

Syntax

Description This command is used to disable SNMP

Parameters none.

Restrictions Only administrator-level users can issue

Example Usage:

To turn off SNMP authentication trap support:

local>disable snmp authenticate traps
Command: disable snmp authenticate traps

Success.

local>

disable snmp authenticate traps

authentication support on the switch.

this command.

ping

Purpose Used to test the connectivity between

network devices.

Syntax

ping <ipaddr> {times <value>} {timeout

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

w

ping

<sec>}

Description This command sends Internet Control

Message Protocol (ICMP) echo messages to
a remote IP address. The remote IP address

ill then “echo” or return the message.
This is used to confirm connectivity
between the switch and the remote device.

Parameters

<ipaddr> − The IP address of the remote
device.

times <value> − The number of individual
ICMP echo messages to be sent. A value of
0 will send an infinite ICMP echo messages.
The maximum value is 255. The default is

0.

timeout <sec> − Defines the time-out period
while waiting for a response from the
remote device. A value of 1 to 99 seconds
can be specified. The default is 1 second.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To send ICMP echo message to “10.48.74.121” for 4
times:

local>#ping 10.48.74.121 times 4
Command: ping 10.48.74.121
Reply from 10.48.74.121, time<10ms
Reply from 10.48.74.121, time<10ms

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DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

Reply from 10.48.74.121, time<10ms
Reply from 10.48.74.121, time<10ms
Ping Statistics for 10.48.74.121
Packets: Sent =4, Received =4, Lost =0

local>

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7

DOWNLOAD/UPLOAD

COMMANDS

The download/upload commands in the Command Line
Interface (CLI) are listed (along with the appropriate parameters)
in the following table.

Command Parameters

download firmware <ipaddr>

<path_filename 64>
configuration <ipaddr>
<path_filename 64>
{increment}

upload configuration

log
<ipaddr>
<path_filename 64>

Each command is listed, in detail, in the following sections.

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download

Purpose Used to download and install new firmware

or a switch configuration file from a TFTP
server.

Syntax

download [ firmware <ipaddr>
<path_filename 64> /configuration
<ipaddr> <path_filename 64>
{increment}]

Description This command is used to download a new

firmware or a switch configuration file from
a TFTP server.

Parameters

firmware − Download and install new
firmware on the switch from a TFTP server.

configuration − Download a switch
configuration file from a TFTP server.

<ipaddr> − The IP address of the TFTP
server.

<path_filename 64> − The DOS path and
filename of the firmware or switch
configuration file on the TFTP server. For
example, C:\3250.had.

increment − Allows the download of a
partial switch configuration file. This allows
a file to be downloaded that will change
only the switch parameters explicitly stated
in the configuration file. All other switch
parameters will remain unchanged.

Restrictions The TFTP server must be on the same IP

subnet as the switch. Only administrator-

77

download

Example Usage:

local>download configuration 10.48.74.121
c:\cfg\setting.txt
Command: download configuration 10.48.74.121
c:\cfg\setting.txt

Connecting to server................... Done.

Download configuration............. Done.

local>

upload

DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

level users can issue this command.

Purpose Used to upload the current switch settings

or the switch history log to a TFTP server.

Syntax

Description This command is used to upload either the

Parameters

upload [configuration/log] <ipaddr>
<path_filename 64>

switch’s current settings or the switch’s
history log to a TFTP server.

configuration − Specifies that the switch’s
current settings will be uploaded to the
TFTP server.

log − Specifies that the switch history log
will be uploaded to the TFTP server.

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upload

<ipaddr> − The IP address of the TFTP
server. The TFTP server must be on the
same IP subnet as the switch.

<path_filename 64> − Specifies the location
of the switch configuration file on the TFTP
server. This file will be replaced by the
uploaded file from the switch.

Restrictions The TFTP server must be on the same IP

subnet as the switch. Only administrator­level users can issue this command.

Example Usage:

local>upload configuration 10.48.74.121 c:\cfg\log.txt
Command: upload configuration 10.48.74.121
c:\cfg\log.txt

Connecting to server................... Done.

Upload configuration...................Done.

local>

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8

NETWORK MONITORING

COMMANDS

The network monitoring commands in the Command Line
Interface (CLI) are listed (along with the appropriate parameters)
in the following table.

Command Parameters

show packet ports <portlist>
show error ports <portlist>
show utilitzation
clear counters ports <portlist>
clear log
show log index <value>

Each command is listed, in detail, in the following sections.

show packet ports

Purpose Used to display statistics about the packets

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show packet ports

sent and received by the switch.

Syntax

show packet ports <portlist>

Description This command is used to display statistics

about packets sent and received by ports
specified in the port list.

Parameters

<portlist> − Specifies a range of ports to be
configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.

Restrictions none.

Example Usage:

To display the packets analysis for port 7:

local>show packet ports 7

Port number : 7
Frame Size Frame Counts Frames/sec Frame Type Total
Total/sec

------------ ------------ ---------- ---------- ------- --------­ 64 3275 10 RX Bytes 408973 1657
65-127 755 10 RX Frames 4395 19
128-255 316 1
256-511 145 0 TX Bytes 7918 178

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512-1023 15 0 TX Frames 111 2
1024-1518 0 0

Unicast RX 152 1
Multicast RX 557 2
Broadcast RX 3686 16

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show error ports

Purpose Used to display the error statistics for a

range of ports.

Syntax

show error ports <portlist>

Description This command will display all of the packet

error statistics collected and logged by the
switch for a given port list.

Parameters

<portlist> − Specifies a range of ports to
be configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.

Restrictions none.

Example Usage:

To display the errors of port 3:

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Command: show error ports 3

Port number : 3

RX Frames TX Frames

--------------- ---------------­CRC Error 0 Excessive Deferral 0
Undersize 0 CRC Error 0
Oversize 0 Late Collision 0
Fragment 0 Excessive Collision 0
Jabber 0 Single Collision 0
Drop Pkts 0 Collision 0

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show utilization

Purpose Used to display real-time port utilization

statistics.

Syntax

show utilization

Description This command will display the real-time

port utilization statistics for the switch.

Parameters none.

Restrictions none.

Example Usage:

To display the port utilization statistics:

local>show utilization

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Port TX/sec RX/sec Util Port TX/sec RX/sec Util

---- ---------- ---------- ---- ---- ---------- ---------- ---­ 1 0 0 0 13 0 0 0
2 0 0 0 14 0 0 0
3 0 0 0 15 0 0 0
4 0 0 0 16 0 0 0
5 0 0 0 17 19 49 1
6 0 0 0 18 0 0 0
7 0 0 0 19 0 0 0
8 0 0 0 20 0 0 0
9 0 0 0 21 0 0 0
10 0 0 0 22 0 0 0
11 0 0 0 23 0 0 0
12 0 0 0 24 0 30 1

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clear counters

Purpose Used to clear the switch’s statistics

counters.

Syntax

Description This command will clear the counters used

Parameters

clear counters {ports <portlist>}

by the switch to compile statistics.

<portlist> − Specifies a range of ports to
be configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
beginning and end of the port list range are

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clear counters

separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order..

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To clear the counters:

local>clear counters ports 7-9
Command: clear counters ports 7-9

Success.

local>

clear log

Purpose Used to clear the switch’s history log.

Syntax

Description This command will clear the switch’s

Parameters none.

Restrictions Only administrator-level users can issue

clear log

history log.

this command.

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A

g

Example Usage:

To clear the log information:

local>clear log
Command: clear log

Success.

local>

show log

Purpose Used to display the switch history log.

Syntax

show log {index <value>}

Description This command will display the contents of

the switch’s history log.

Parameters

index <value> − The show log command
will display the history log until the log
number reaches this value.

Restrictions none.

Example Usage:

To display the switch history log:

local>show log
Index Time Log Text

----- ---------- --------------------------------------------------------------­4 000d00h50m Successful login through Console (Username:

nonymous)

3 000d00h50m Lo

out through Console (Username:

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Anonymous)
2 000d00h49m Successful login through Console (Username:
Anonymous)
1 000d00h49m Logout through Console (Username:

Anonymous)

local>

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9

SPANNING TREE

COMMANDS

The spanning tree commands in the Command Line Interface
(CLI) are listed (along with the appropriate parameters) in the
following table.

Command Parameters

config stp ports <portlist>

cost <value 1-65535>
priority <value 0-255>
state [enabled/disabled]
maxage <value 6-40>
hellotime <value 1-10>
forwarddelay <value 4-30>
priority <value 0-65535>

fbpdu [enabled/disabled]
enable stp
disable stp
show stp
show stp ports <portlist>

Each command is listed, in detail, in the following sections.

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config stp

Purpose Used to set up STP on the switch.

Syntax

config stp {ports <portlist> {cost <value

1-65535>/priority <value 0-255>/state

[enabled/disabled]} {maxage <value 6-

40>/hellotime <value 1-

10>/forwarddelay <value 4-30>/priority

<value 0-65535>/fbpdu

[enabled/disabled]}

Description This command is used to set up the

Spanning Tree Protocol (STP) for the entire

switch.

Parameters

ports <portlist> − Specifies a range of ports

to be configured. Ports are specified by

entering the lowest port number in a group,

and then the highest port number in a

group, separated by a dash. So, a port

group including the switch ports 1, 2, and

3 would be entered as 1-3. Ports that are

not contained within a group are specified

by entering their port number, separated

by a comma. So, the port group 1-3 and

port 49 would be entered as 1-3, 49.

Additional ports can be individually entered

by their port number, separated by

commas. If you enter the ports sub-

command, you can enter the port STP cost,

priority, and state sub-commands listed

below.

cost <value 1-65535> − This defines a

metric that indicates the relative cost of
forwarding packets to the specified port

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config stp

DES-3250TG Layer 2 Fast Ethernet Switch User’s Guide

list. The default cost for a 1000 Mbps
port is 4, a 100 Mbps port is 19, and for
a 10 Mbps port the default cost is 100.

priority <value 0-255> − A numeric

value between 0 and 255 that is used in
determining the root and designated
port in an STP port list. The default is
128, with 0 indicating the highest
priority.

state [enabled/disabled] − Allows STP to

be enabled or disabled for the ports
specified in the port list. The default is
disabled.

maxage <value 6-40> − The maximum
amount of time (in seconds) that the switch
will wait to receive a BPDU packet before
reconfiguring STP. The default is 20
seconds.

hellotime <value 1-10> − The time interval
between transmission of configuration
messages by the root device. The default is
2 seconds.

forwarddelay <value 4-30> − The maximum
amount of time (in seconds) that the root
device will wait before changing states. The
default is 15 seconds.

priority <value 0-65535> − A numerical
value between 0 and 65535 that is used in
determining the root device, root port, and
designated port. The device with the

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config stp

highest priority becomes the root device.

The lower the numerical value, the higher

the priority. The default is 32,768.

fbpdu [enabled/disabled] − Allows the

forwarding of STP BPDU packets from

other network devices when STP is disabled

on the switch. The default is enabled.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To set maxage to 18 and hellotime to 4:

local>config stp maxage 18 hellotime 4
Command: config stp maxage 18 hellotime 4

Success.

local>

enable stp

Purpose Used to globally enable STP on the switch.

Syntax enable stp

Description This command allows the Spanning Tree

Protocol to be globally enabled on the

switch.

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enable stp

Parameters none.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To enable STP on the switch:

local>enable stp
Command: enable stp

Success.
local>

disable stp

Purpose Used to globally disable STP on the switch.

Syntax disable stp

Description This command allows the Spanning Tree

Protocol to be globally disabled on the
switch.

Parameters none.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

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To disable STP on the switch:

local>disable stp
Command: disable stp

Success.

local>

show stp

Purpose Used to display the switch’s current STP

configuration.

Syntax

show stp

Description This command displays the switch’s

current STP configuration.

Parameters none

Restrictions none.

Example Usage:

Status 1: STP enabled:

local>show stp
Command: show stp

STP Status : Enabled
Max Age : 18
Hello Time : 4
Forward Delay : 15
Priority : 32768
Forwarding BPDU : Enabled

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Designated Root Bridge : 00-00-00-12-00-00
Root Priority : 32768
Cost to Root : 19
Root Port : 33
Last Topology Change : 13sec

Topology Changes Count: 0

Status 2: STP Disabled

local>show stp
Command: show stp

STP Status : Disabled
Max Age : 18
Hello Time : 4
Forward Delay : 15
Priority : 32768
Forwarding BPDU : Enabled

local>

show stp ports

Purpose Used to display the switch’s current per-

port group STP configuration.

Syntax

Description This command displays the switch’s

Parameters

show stp ports <portlist>

current per-port group STP configuration.

<portlist> − Specifies a range of ports to be
configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The

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show stp ports

beginning and end of the port list range are

separated by a dash. For example, 3 would

specify port 3. 4 specifies port 4. 3-4

specifies all of the ports between port 3 and

port 4 − in numerical order.

Restrictions None

Example Usage:

To display STP state of port 1-9:

local>show stp ports 1-9

Port Connection State Cost Priority Status

---- ---------------- ----------- ----- ---------- ---------------
1 Link Down Enabled 19 128 Forwarding
2 Link Down Enabled 19 128 Forwarding
3 Link Down Enabled 19 128 Forwarding
4 Link Down Enabled 19 128 Forwarding
5 Link Down Enabled 19 128 Forwarding
6 Link Down Enabled 19 128 Forwarding
7 Link Down Enabled 19 128 Forwarding
8 Link Down Enabled 19 128 Forwarding
9 Link Down Enabled 19 128 Forwarding

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10

LAYER 2 FORWARDING

DATABASE COMMANDS

The layer 2 forwarding database commands in the Command
Line Interface (CLI) are listed (along with the appropriate
parameters) in the following table.

Command Parameters

create fdb <vlan_name 32>

<macaddr>

port <port>
create

multicast_fdb
config

multicast_fdb

delete fdb <vlan_name 32>

clear fdb vlan <vlan_name 32>

show
multicast_fdb

config fdb <sec>

<vlan_name 32>

<macaddr>

<vlan_name 32>

<macaddr> [add/delete]

<portlist>

<macaddr> [add/delete]

<portlist>

port <port>/all

vlan <vlan_name 32>

mac_address <macaddr>

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Command Parameters

aging_time
show fdb port <port>

vlan <vlan_name 32>
mac_address <macaddr>
static

aging_time
create fdbfilter <macaddr> [src/dst/either]
delete fdbfilter <macaddr>
show fdbfilter {<macaddr>}

Each command is listed, in detail, in the following sections.

create fdb

Purpose Used to create a static entry to the unicast

MAC address forwarding table (database)

Syntax

Description This command will make an entry into the

Parameters

create fdb <vlan_name32> <macaddr>
[port <port>]

switch’s unicast MAC address forwarding
database.

<vlan_name 32> − The name of the VLAN
on which the MAC address resides.

<macaddr> − The MAC address that will be
added to the forwarding table.

<port> − The port number corresponding to
the MAC destination address. The switch

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create fdb

will always forward traffic to the specified
device through this port.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To create an unicast MAC forwarding:

local>create fdb default 00-00-00-00-01-02 port 5
Command: create fdb default 00-00-00-00-01-02 port 5

Success.

create multicast_fdb

Purpose Used to create a static entry to the

multicast MAC address forwarding table
(database)

Syntax

Description This command will make an entry into the

Parameters

create multicast_fdb <vlan_name 32>
<macaddr>

switch’s multicast MAC address forwarding
database.

<vlan_name 32> − The name of the VLAN
on which the MAC address resides.

<macaddr> − The MAC address that will be
added to the forwarding table.

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create multicast_fdb

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To create multicast MAC forwarding:

local>create multicast_fdb default 01-00-5E-00-00-00
Command: create multicast_fdb default 01-00-5E-00-00­00

Success.

local>

config multicast_fdb

Purpose Used to configure the switch’s multicast

MAC address forwarding database.

Syntax

Description This command configures the multicast

Parameters

config multicast_fdb <vlan_name 32>
<macaddr> [add/delete]
[egress/forbidden] <portlist>

MAC address forwarding table.

<vlan_name 32> − The name of the VLAN
on which the MAC address resides.

<macaddr> − The MAC address that will be

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g

config multicast_fdb

added to the forwarding table.

[add/delete] − Add will add the MAC
address to the forwarding table, delete will
remove the MAC address from the
forwarding table.

[egress/forbidden] − Egress specifies the
port as being a source of multicast packets
originating from the MAC address specified
above, forbidden specifies the port as not
being a member of the VLAN and that the
port is forbidden from becoming a member
of the VLAN dynamically.

<portlist> − Specifies a range of ports to be
configured. The port list is specified by
listing the beginning port number and the
highest port number of the range. The
beginning and end of the port list range are
separated by a dash. For example, 3 would
specify port 3. 4 specifies port 4. 3-4
specifies all of the ports between port 3 and
port 4 − in numerical order.

Restrictions Only administrator-level users can issue

this command.

Example Usage:

To add multicast MAC forwarding:

local>config multicast_fdb default 01-00-5E-00-00-00 add 1-5
Command: confi

multicast_fdb default 01-00-5E-00-00-00 add 1-

100